270 GYMNODONTES. 



5. Tetrodon sceleratns. 



Tetrodon sceleratns, (Fo7'st.) Gm. L. i. p. 1444; Bl. Srlin. p. 50(') 



Lacep. i. pp. 476, 508. 

 argeuteus, Laci'p. Ann. Mi/s. (THid. Nat. iv. 1804, p. 211, p. 58. 



fig. 2; ScJilef/. Fcnm. Japon. Pniss. p. 275, pi. 121. fig. 2; Bleek. 



Nat. Tyds. Ned. Ind. iii. p. 7u7, and Atl. Ichth. Gtjmnod. p. 64, 



pi. 5. fig. 1. 



argyropleura, Bennett, Proc. Comm. Znol. Sac. ii. 1832, p. 184. 



a.rgentatus, Bli/th, in Kelaarfs Frodr. Faun. Zeyl. i. Appettd. 



p. 49. 

 Promecocephalus argentatus, Bibron, Pev. Zool. 1855, p. 270. 

 Tetraodon bicolor, Breroort, Nvt. Japan. Fish. p. 283. 



Head and back finely chagrined above ; abdomen with verjr small 

 three-rooted spines. Side naked. Body elongate, tail depressed. 

 The length of the head is less than its distance from the dorsal fin. 

 Caudal iiu emarginate. Sides with a well-defined silvery band ; the 

 parts above the band bro^vuish, with small darker or black spots. 

 The brown colour encircles the eye completely ; a triangular silvery 

 spot in front of the eye. A brownish band round the chin runs 

 along and below the silvery band. Gill-opening deep black. 



Vert. 7/10. 



Indian Ocean and archipelago ; Poljniesia and Australia. 



a-h. Adult (27 inches) and young : stuffed. Zanzibar. From Lieut. - 

 Col. Playfair's Collection. 



c. Young. Zanzibar. From Lieut. -Col. Playfair's Collection. 



d. Adult. Ceylon. From the Collection of the Zoological Society. 



— Type of T. argyvopleum. 



e. Adult : stuffed. Madras. 



f. Young. Ambopia. Purchased of Hr. Frank. 



g. Half-grown. East-Indian archipelago. From Dr. Bleeker's 



Collection. 

 7). Young. Philippine Islands. Purchased of Mr. Cuming. 

 i-l. Young. Formosa. From Consul Swinhoe's Collection. 

 m. Young. South Australia. From Mr. Bynoe's Collection. 

 n. Adult: stufted. Australia? Voyage of H. M.S. ' Herald.' 

 0. Adult : stuffed. Presented by the Linnean Society. 

 p-q. Skulls. 

 r. Adult: skeleton. 



6. Tetrodon honckenii. 



Tetraodon honckenii, BL Ami. Fisch. i. p. 133, tab. 143 ; Lacep. 



Poiss. i. pp. 475, 492 ; Bl. Schn. p. 504 ; Bleek. Atl. Ichth. Grjmnod. 



p. 60, pi. 2. fig. 2 ; Ca.stelnau, Poiss. Afr. Aiistr. p. 74. 



atratiis, Richards. Voy. Samarang, Fish. p. 15, pi. 7. 



Holocanthus lagoceplialus, Gronov. Syst. ed. Gray, p. 25. 

 Gastropliysus honckenii, Bleek. Nat. Tyds. Ned. Ind. vii. p. 258. 



Back covered with very small spines from the nostrils nearly to 

 the dorsal fin ; abdomen entirely covered with numerous similar 

 spines ; a cross band of spines across the side behind the pectoral 

 fin ; the remainder of the side naked. The length of the head is 



