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Sepedon and Tetaoncera : Sepedon fuscipennis Loew.: 1. Larva, dorsal view; 2. Larva, lateral view; 3. Puparium, dorsal view; 4. Puparium, lateral view; 5. Open puparium; 6. Seed floating which the puparium simulates; 7. Imago, dorsal view; 8. Imago, lateral view.
Tetanoccera pictipes Loew: 9. Larva, dorsal view; 10. Larva, lateral view; 11. Puparium, lateral view; 12. Puparium, dorsal view; 13. Imago. dorsal view; 14. Imago, lateral view
Coelophrys micropus. From station 5115. Dorsal view (1); Coelophrys brevipes. From the type. Dorsal view (2); Coelophrys oblonga. From the type. Dorsal view (3); Coelophrys arca. From the type. Dorsal view <4); Coelophrys mollis. From the type. Dorsal view (5)
Cucumaria frondosa side view (65), dorsal view (66); Thyone briareus dorsal view (67); Thyone unisemita side view (68), ventral view (69); Cucumaria pulcherrima side view (70); thyone scabra side view of a young specimen (71); trochostoma ovliticum side view of contracted alcoholic specimen (72); Caudina arenata side view of contracted alcoholic specimen (73); Synapta inhaerens dorsal view (74); Synapta roseola dorsal view (75)
View of the left half of cistella (Argiope) neapolitiana, which has been cut in two by a median longitudinal incision, to show the disposition of the organs. Partly diagrammatic. The inorganic part of the shell only is shown. The tubular extensions of the mantle ad the organic outer layer are not indicated, and hence the pores appear open.
1. The ventral valve.
2. The dorsal valve.
e. The stalk.
4. The mouth.
5. Lip which overhangs the mouth and runs all round the tentacular arms.
7. Ovary in dorsal valve.
8. Liver diverticula.
9. Occlusor muscle; its double origin is snown.
10. Internal opening of left nephridium.
11. External opening of left nephridium.
12. Ventral adjustor. The line from 10 crosses the dorsal adjustor.
13. Divaricator muscle.
Caddis Flies: 1. Dorsal view of larva of Molanna cinerea Hagen; 2. Lateral view of larva of M. Cinerea; 3. Lateral view of the pupa of M. Cinerea; 4. Dorsal view of imago of M. cinerea; 5. Accustomed resting position of the imago of M. cinerea; 6. Ventral view of the flat larval case of M. cinerea; 7. Lateral view of larva of POlycentropus lucidus Hagen showing the very long anal prolegs and the absence of gill filaments; 8. Lateral view of pupa of P. lucidus; 9. Dorsal view of imago of P. lucidus; 10. Larval case of P. lucidus; tube composed of sand and silk; the enlargement near the end is two-layered, and contains the pupa; 11. Eggs laid by P. lucidus female on a stick protruding from the water in a breeding cage
Spongilla Flies: Climacia dictyona Needham: 1. Imago, lateral view; 2. Imago, dorsal view; 3. Larva, dorsal view; 4. Pupal cases, in situ; 5. One of the same....showing the hexagonal meshes of the outer covering.
Sisyra ambrata Needham: 6. Imago, lateral view; 7. Imago, dorsal view; 8. Two newly formed pupae, lateral and ventral views; 9. Macronychus glabratus Say (Coleoptera : Parnidae) : an associate of the sponge fly larvae, on submerged timbers; 10. Fresh-water sponges (Spongilla ? fragilis Leidy) in situ, witht he sponge fly larvae crawling about over them; 11. Two pupal cases of S. umbrata, showing the closely woven outer covering....
Mayflies: Ephemera viria Etn. 1. Lateral view of the nymph. Note the latero-dorsal breathing organs or gills on the abdominal segments; 2. Dorsal view of the nymph. This view shows how these organs may arch over the back; 3. Lateral view of the male imagop; 4. Dorsal view of the male imago
Siphturus alternatus Say.: 5. Lateral view of the nymph. This larva possesses a different type of abdominal breathing organs or gills; 6. Dorsal view of the nymph. This view shows the overlapping of the gills and also gives some hint of the number of trachae or air tubes, represented by black lines in each; 7. Lateral view of the male imago
Apeltes quadracus (Four-spined Stickleback)
Fig.22 Embryo in the egg, showing the asymmetrically disposed vitelline vessels; figs. 23 & 24 Other views of the same stage, showing the lateral position of the heart; Fig.25 Dorsal view of a recently hatched embryo, showing the distribution of the brown pigment blotches on the median line and the symmetry in the distribution of the vascular channels on the dorsal side of the yelk; Fig.26 Side view of the same stage, showing the pigmentation and vascular loops in the dorsal fin-fold
Sepedon and Tetaoncera : Sepedon fuscipennis Loew.: 1. Larva, dorsal view; 2. Larva, lateral view; 3. Puparium, dorsal view; 4. Puparium, lateral view; 5. Open puparium; 6. Seed floating which the puparium simulates; 7. Imago, dorsal view; 8. Imago, later
Anatomy of the internal organs of a female gastropod, viewed from the dorsal side. The roof of the mantle cavity has been divided by a longitudinal incision and the flaps laid out, that on the left hand bearing the etenidium and osphradium, and that on the right the rectum and terminal part of the oviduct. The muscular dorsal wall of the body and the introvert have been divided so as tobring into view the anterior part of the alimentary canal and a portion of the nervous system. The buccal cavity has been tilted up and opened so as to show the odontophore, and the esohagus has been cut through near the anterior end...
Sturisoma robusta (Regan):
1 male dorsal view
2 female dorsal view
3 male ventral view
Cut of Yellow Perch Showing Parts Usually Referred to in Descriptions
1. Depth. 2. Head. 3. Eye. 4. Snout. 5. Premaxillary. 6. Maxillary. 7. Lower Jaw. 8. Opercle. 9. Subopercle. 10. Preoprele and cheek. 11. Branebiostegals. 12. Lateral line. 13. Length of caudal peduncle. 14. Depth of caudal peduncle. 15. Vent. 16. Spinous dorsal fin. 17. Soft dorsal fin. 18. Anal fin. 19. Caudal fin. 20. Pectoral fin. 21. Ventral fin.
Productus giganteus. Carboniferous Limestone.
A, Interior of dorsal valve.
B, Interior of ventral valve.
C, Transverse section of valves.
D, Hinge line of A:
a, occlusor scars; d, divaricator scars; i, "reniform impressions"; ca, cardinal process; h, hinge line; p, brachial prominence; s, cavity for spiral arms; do, dorsal valve; ve, ventral valve
Conchidium galeatum. TRansverse section. d, Dorsal valve; d.s. dorsal septum; s, socket plate; v, ventral valve; v.s. ventral septum; d.p, dental plate
Simulium Society: 1. Two imagos of hydropsyche; 2. Imago of hydorpsyche; 3. Larva of hydropsyche; 4. Pupal case of hydropsyche; 5. Imago of roederiodes juncta; 6. Larva of Roederiodes juncta; 7. Pupa of Roederiodes juncta; 8. Pupa of Roederiodes juncta in an habitual position in the abandoned pupal case of Simulium venustum; 9. Egg mass of S. Venustum and two females ovipositing; 10. Pupae, empty pupa skins, and pupal cases of s.venustum; 11. Larva of S.venustum; 12. Male imago of Leuctra tenella, dorsal view; 13. Imago of Baetis pygmaea, lateral view; 14. Imago of Baetis pygmaea dorsal view; 15. Imago of Heptagenia pulchella; 16. Nymph of Heptagenia pulchella; 17. Pupal cases of hydropsyche sp.? in situ; 18. Pupae of Simulium venustum, in situ; 19,20. Larva of S.venustum in situ
Cymopolia sica, after A. Milne Edwards and Bouvier. a, Male, dorsal view; b, Carapace of same, dorsal view; c, Right oculo-antennal region of same, lower view; d, Merus and carpus of first right leg of same, upper side; e, left outer maxilliped; f, Sternum and abdomen of male
Cymopolia dentata, after A. Milne Edwards and Bouvier. a, Dorsal view of female hologype; b, Frontal border of the same; c, Carapace of a male Dorsal view; d, Right outer maxilliped; e, Abdomen of male; f, Left oculo-antennal region of same male; g, Merus and carpus of first left leg of female holotype, upper face; h, Left chelliped of male, outer face; i, Right cheliped of male, outer face
Cymopolia cristatipes, Male Holotype, after A. Milne Edwards and Bouvier. a, Dorsal view; b, Front, dorsal view; c, ventral view of anterior half of body; d, abdomen; e, endognath of left outer maxilliped
Acanthodoris brunea MacFarland. Dorsal view...and Detail of dorsal papillae, greatly enlarged
View of dorsal aspect of the young of the common sturgeon (fig.23); View of the dorsal aspect of the young blunt-nosed sturgeon of teh Delaware, Acipenser brevirostries Les (fig.24)
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