256 SCLERODERMI. 



a. OSTRACION, 



Ostracion, LiBtophrvs, Tetrosomus, et Acanthostracion, Swainson <§■ 



Blceker, Ned. Tyds. Dkrk. iii. p. 15. 

 Cibotion, Loetophrys, and Ostracion, Kaup, Wi^ym. Arch. 1855, 



p. 215. 



Carapace closed behind the anal fin. 



Seas of the tropical and subtropical regions. 



The species may be arranged thus : — 



I. Carapace three-ridged, p. 256. 



II. Carapace four- or five-ridged, without spines, p. 260. 



III. Carapace four-ridged, with spines, p. 264. 



I. Carapace three-ridged. 



1. Ostracion triqueter. 



Willuyhhj, Ajyp. p. 20, tab. J. 18. 



Ostracion, sp., Artedi, Si/non. p. 85. no. 14 ; Gen. p. 57. no. 10. 



Seba, iii. tab. 24. figs. 6 & 12. 



Ostracion triqueter, L. Si/st. Nat. i. p. 407 ; £1. tab. 130 ; £1. Schn. 

 p. 498 ; Lacep. i. p. 444; Miill. iifTrosch. in Schomhurtjk'' s Barbadoes, 

 p. 077 ; Hollard, Ann. Sc. Nat. 1857, vii. p. 154 ; Pocy, Repert. 

 Fis.-nat. Cub. \\. p. 442. 



Carapace three-ridged, without spines on any portion, forming a 

 continuous bridge across the back of the tail behind the dorsal fin. 

 Interorbital space concave ; upper profile of the snout concave. 

 Body and tail covered with small white spots nearly as large as the 

 pupil of the eye. Lips, roots of the fins, root of the tail, and margin 

 of the caudal black. Abdomen whitish, immaculate. 



West Indies. 



a. Several half-grown specimens : skins. Jamaica. Purchased of 



Mr. Parnell. 

 h. Half-grown : skin. Trinidad. Presented by J. B. Richardson, 



Esq. 

 c. Half-grown. Cayenne. 



d-f. Half-grown. West Indies. Purchased of Mr. Scrivener. 

 g. Several adult (10 inches), half-grown, and young examples : 



skins. West Indies. 

 h, i, k, I. Several half-growTi and young examples. 

 m. Several adult (12 inches) and half-grown examples : skins. 



2. Ostracion trigonus. 



Willvghby, App. p. 20, tab. J. l.'B. fig. 2. 



Ostracion, sp., Artedi, Synan. p. 85. no. 11 ; Gen. p. 57. no. 7. 

 Seba, iii. t. 24. f. 8. 

 Chapin, Patra, p. 31, lam. 17 fig. 1. 



Ostracion trigonus, L. Si/st. Nat. p. 408 ; Bl. tnf. 135 ; Bl. Schn. 

 p. 409; Lac^p. i. p. 4G5 ; Hollard, Ann. Sc. Nat. 1857, vii. p. 150. 



yalei, Storcr., Bo.st. Joiirn. Nat. Hist. i. p. 353, pi. 8. 



Lactophrvs valci, l)cl,ay, NcirVorJi Fauna, Fish. p. .31 )2 ; Storcr, Metn. 

 Atn. Ac. viii. 1801, p. 429 (pi. :Vi. iip-. 3). 



