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1.
9- Paralichthys albiguttus, 14 cm. long, individual (B), on black and white background (2 mm. squares) from July 29, 11 a.m. to July 30, 3 p.m., after having been adapted to the background shown in figure 10. This indiviidual was extensively used in the study of adaption on artificial backgrounds. It is represented in many....figures. Note that numerous dark spots have appeared in the light areas shown in figure 10, and that the light spots in the dark areas have become more numerous and more conspicuous. 10- Individual (B) on black and white backgroune (5 mm. squares) from July 25, 2 p.m. to jUly 26, 11:30 a.m., after having been adapted to a white background. Note that the three very light gray areas around the ocelli...have become much darker and other dark spots have appeared. 11-Individual (B) on black and white backgroune (2 cm. squares) from August 1, 9 a.m., to 4:30 p.m., after having been adapted to 1 cm. squares, shown in figure 12. Note that the pattern has changed very little.12-Individual (B) opn black and white backgroune (1 cm. squares) from July 31, 11:40 a.m., to August 1, 9 a.m., after having been on (1 sq. cm. circles) from July 30, 3 p.m.., to July 31, 11:40 a.m. Note that the dark areas are darker than in figure 10.
2.
48- Paralichthys albiguttus, 12 cm long, fully adapted to a very light gray background. This specimen continuously appeared somewhat darker than the background. Note that the three ocelli have almost entirely disappeared. 49- Individual (B)..., on black and white background (dots 0.5 mm. in diameter).... Dots of this size, no matter how numerous, had no effect except perhaps to cause the skin to become uniformly slightly grayer. 50- Individual (B) on black and white background (dots 1 mm in diameter)...after having been fully adapted to 1 cm. squares. These spots have no appreciable effect on the skin unless they are more numerous than they are in this background. 51- Individual (B) on black and white background (dots 1 mm. in diameter)....after having been fully adapted to dots 2 mm. in diameter. Note that the posterior ocellus is much darker than on white, but that the two anterior ones are not....
3.
Figures illustrating the tubes in which Lingula anatifera lives. The upper figure is a view of the trilobed opening of the tube. The lower figure shows the tube in the sand laid open and the animal exposed. The dotted line indicates the position of the body when retrcted. The darker portion is the tube of sand agglutinated by the secretion of the stalk.
4.
Chart of Bight of Royal Shoal. Depth of water less than 12 feet and more than 6 feet indicated by light shading; less than 6 feet, by darker shading. Oyster plants are indicated by X marks.
5.
Chart of the region around Cunning Harbor. Depth of water less than 12 feet and more than 6 feet indicated by light shading; less than 6 feet, by darker shading. Oyster plants are indicated by X marks.
6.
Chart of Wyesocking Bay and vicinity. Depth of water less than 12 feet and over 6 indicated by light shading; less than 6 feet by darker shading. Oyster plants are indicated by X marks
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