Fishes . Fin. 522.—Spineless Trunkfisli, Lactophrys triqueler (Linnspus). horns over the eye; Lactophrys trijoints has spines on the lowerparts only. Lactophrys triqiieter is without spines, and thefourth American species, Lactophrys bicaiidalis, is marked bylarge black spots. The species of Ostracion radiate from theEast Indies. One of them, Ostracion gibbosum, has a turret-like spine on the middle of the back, causing the carapace toappear five-angled; Ostracion diaphaniim has short horns overthe eye, and Ostracion cormitum very long ones; Ostracion Series Plectognathi 629 immacul
Fishes . Fin. 522.—Spineless Trunkfisli, Lactophrys triqueler (Linnspus). horns over the eye; Lactophrys trijoints has spines on the lowerparts only. Lactophrys triqiieter is without spines, and thefourth American species, Lactophrys bicaiidalis, is marked bylarge black spots. The species of Ostracion radiate from theEast Indies. One of them, Ostracion gibbosum, has a turret-like spine on the middle of the back, causing the carapace toappear five-angled; Ostracion diaphaniim has short horns overthe eye, and Ostracion cormitum very long ones; Ostracion Series Plectognathi 629 immaculatus, the common species of Japan, is without spines;Ostracion sebcs of Hawaii and Samoa is deep, rich blue withspots of golden. Aracaiia is also of East Indian origin; Ara-cana acitleata, with numerous species, is common in Fig. 523.—HoriJess Truiikfish, Ladophrys trigonus (Liniupus). Tortugas, Fla. A fossil Species of Ostracion (0. micriirmn) is known from theEocene of Monte Bolca. The Gymnodontes. — The group of Gymnodontes, having theteeth united in a turtle-like beak, carry still further the degen-
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