مفلطحيات كبيرة الأسنان

Etropus crossotus Jordan & Gilbert.

Paralichthys albiguttus, 20 com long, on vermillion..

Ancylopsetta quadrocellata, 16 cm. long, on chrome yellow.....

Paralichthys Lethostigma Jordan and Gilbert. Flounder

Coral Sea, Duration 28 seconds

Flounder (Paralichthys dentatus (Linnaeus)).

Etropus crossotus Jordan & Gilbert. Cedar Keys, Fla..

Paralichthys albiguttus....

Ancylopsetta quadrocellata, 17 cm. long, on dark blue.....

Coral Sea, Duration 30 seconds

Paralichthys albiguttus, 15 cm. long, on blue.....

Ancylopsetta dendrittica Gilbert. Panama.

Paralichthys albiguttus, 15 cm. long, on green....

Shoulder-girdle of a Flounder, Paralichthys californicus (Ayres).

Paralichthys. Group of Paralichthys on a white background containing considerable debris scattered over it. All of the specimens are albiguttus except the large one above and to the left, which is dentalus. Note that this specimen has five dark areas, two.

Homocercal tail of a Flounder, Paralichthys californicus.

Paralichthys. Group of Paralichthys on a white background containing considerable debris scattered over it. All of the specimens are albiguttus except the large one above and to the left, which is dentalus. Note that this specimen has five dark areas, two rather inconspicuous ones near the head and three near the posterior end. In some specimens there are several others nearly as conspicuous as these. In albiguttus there are but three, the two near the posterior end of the base of the fin being absent. The difference in shade in the different individuals is largely due to difference in their past experience.

44-Paralichthys abliguttus, (G), 22 cm long, head continuously on white and tail on back.... This specimen was taken from a black aquarium and was fully adapted to black in the beginning of the experiment. 45- Individual (G), one eye on white the other on black continuously.... 46- Individual (G), continuously with head on white, body on black.... 47- Individual (G), head on black, body on white.....