128 PROCEEDINGS OF THE ACADEMY OF [1897. 



OSTRACILLXE. 



169. Lactophrys triqueter (Linnaeus). 



Ostracion triqueter Linnaeus, Svst. Xat , Ed. X, 330 (India) ; Giinther, Cat., 

 VIII, 256. 



170. Lactophrys trigonus (Linnaeus). 



Ostracion trigonus Linnaeus, Svst Xat., Ed. X, 330 (India) ; Giinther, Cat., 

 VIII, 256. 



171. Lactophrys tricornis i Linnaeus). 



Ostracion tricornis Linnaeus, Syst. Xat., Ed. X, 331, 1753 (India). 

 Ostracion quadricornis Linnaeus, Syst. Xat. Ed. X, 331, 1758 (India); 

 Giinther, Cat., VIII, 257. 



Three specimens, 5-j in. long. Ocelli confined to dorsal region, 

 sides with or without large blotches. A prominent streak under 

 eye, cheeks with blotches or small spots. Some specimens have a 

 row of spots through middle of caudal. Dorsal ridge with or with- 

 out a spine behind dorsal. 



172. Lactophrys bicaudalis (Linnaeus). Trunk Fish. 



Ostracion bicaudalis Linnaeus, Svst. Xat-, Ed. X, 330, 1758 (India J ; 

 Giinther, Cat., VIII, 257. 



Dorsal ridge sharp, spines of ventral ridges (measured on the 

 outer side) 2§ in head. Plates of carapace closely covered with 

 very small tubercles, these largest in middle of sides. Entire body, 

 tail and caudal fins regularly covered with round, black spots, these 

 also largest in the middle of sides. Dorsal and pectorals colorless. 



TETRAODONTID^l. 



173. Lagocephalus pachycephalias (Ranzani). Jug Fish. 



Tetrodon pachycephalus Ranzani, Xov. Comm. Ac. Sci. Inst., Bonon., IV, 

 1840, 73, pi. 11, fig. 2 (Brazil . 



Head 2f ; depth 3* ; eye 3f. D. 14 ; A. 13 ; P. 17. 



Body heavy, tapering from middle of head backward ; snout 

 blunt ; length of caudal peduncle equal to head in front of middle 

 of pupil. Vertical diameter of eye f of horizontal diameter. Inter- 

 orbital space slightly concave, 2 in distance from end of snout to 

 middle of pupil ; distance between eyes equal to snout. Gill-open- 

 ing vertical, broader than base of pectoral. Nuchal cross line of 

 mucous pores half way between snout and origin of dorsal, and one- 

 third the distance to base of caudal. Dorsal and anal alike and op- 

 posite, both somewhat falcate, the last ray about \\ in longest, 

 which is | in head. Pectoral very broad, the margin oblique, 

 slightly sinuous, lowest ray % longest, which is as long as snout ; 2 



