264 SCLEKODERMI. 



d-e. Adult and half-grown : skins. Australia. Presented by the 



Earl of Derby. 

 /. Half-grown : skin. North-west Australia. Purchased of Mr. 



Duboulay. 



III. Carapace four-ridged, loith sjnnes. 



15. Ostracion diaphanus. 



POstracion, sp., Gronov. Zooj)h>/l. p. 45. no. 170. 



Ostracion diaphanus, £1. Sckn. p. 501 ; Bleek. Act. Sue. 6'c. Indo-Keerl. 



iii. Japan, iv. p. 38 ; Hollard, Ann. Sc. Nat. 1857, vii. p. 157. 



brevicoruis, Schleg. Faun. Japon. Foiss. p. 297, tab. 130. fig. 3. 



undecim-aculeatus, Smith, III. Zool, S. Afr. pi. 17j Casteln. Mem. 



Poiss. Afr. Austr. p. 78. 



pentacornis, Bennett, Whalim/ Voyage, p. 26G. 



La3tophrys diaphanus, Kaup, Arch. Ntrgesch. 1855, p. 217, 

 Ostracion (Acanthostracion) comutus, Bleek. Atl. Ichth. Ostrac. p. 33, 



pi. 2. fig. 2, and pi. 4. tig. 3 (not L., see Peters, Monatsher. Ak. Wiss. 



Berl.lSGS,-p.4Ql). 



Carapace four-ridged ; the broad bridge across the back of the 

 tail is formed by four transverse series of scutes. A pair of short 

 conical spines divergent, and pointing forwards in front of the orbits. 

 A triangular compressed spine in the middle of the back ; generally 

 a small spine on each dorsal ridge, opposite to the central spine. 

 Ventral ridge terminating behind in a strong flat spine, and fre- 

 quently with two other smaller spines on the side. luterorbital 

 space deeply concave. Caudal fin of moderate length. Sometimes 

 of uniform coloration, sometimes with bluish, sometimes with black 

 spots. 



From the Cape of Good Hope to Japan and Australia. 



ci-c. Adult (8^ inches), half-grown, and young: skins. Cape of 

 Good Hope. — Types of 0. undecim-aculecttus. 



d. Adult. Japan. Purchased of Mr. Jamrach. 



e. Young. Japan. . 

 f-h. Young. Pacific. 

 i-m. Adult : sldns. 



n. Young. Presented by G. Bennett, Esq. 



16. Ostrapion fornasini. 



Obtracion fornasini, Bianc. i^i Mem. Accad. S". Bologn. vi. p. 151, pi. 1. 



fig. 1 ; Gilnth. in Fish. Zanz. p. 129. 



cornutus, var., Peters, Wiegm. Arch. 1855, p. 278. 



Ijaetoplnys fornasini, Kaup, Wiegm. Arch. 1855, p. 217. 



Ostracion pentacanthus, Bleek. Act. Soc. Sc. Indo-Ncerl. ii. Ambogna, 



viii. p. 98. 

 (Acanthostracion) fornasini, Bleek. Atl. Ichth. Ostrac. p. 34, pi. 3. 



titr. 4. 



Carapace four-ridged, the bridge across the back of the tail 

 formed by tJiree transverse series of scutes only. A pair of short 

 conical spines pointing forwards, ^9r»'rt//(?? or shghthj convergent in 

 front of the orbits. A large triangular compressed spine in the 



