27f> GYMNODONTES. 



5. Tetrodon sceleratus. 



Tetrodon sceleratus, (Foist.) Gvi. L. i. p. 1444 ; Bl. Schn. p. .50(5 



Lacvp. i. pp. 476, 508. 

 avgenteu.^i, Lacvp. Ann. Mua. (Vllid. Nat. iv. 1804, p. 211, p. 58. 



fig. 2; Sclilecj. Faun. Japan. Poiss. p. 275, pi. 121. fig. 2; Blceh. 



Nat. Tyih. Ned. Lid. iii. p. 737, and Atl. Ichth. Gymnod. p. 64, 



pi. 5. fig. 1. 



argyropleura, Bennett, Proc. Comm. ZooL Soc. ii. 1832, p. 184. 



argentatus, Bh/th, in Kelaart's Prodr. Faun. ZeijI. i. Append. 



p. 49. 

 Promecocephalus argeutatus, Bibron, Bev. ZooL 1855, p. 279. 

 Tetraodon bicolor, Brcvoort, Not. Japan. Fish. p. 283. 



Head and back finely chagrined above ; abdomen with very 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 fin emarginate. Sides with a well-defined silvery band ; th<^ 

 parts above the band brownish, 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 silverj' band. Gill-opening deep black. 



Vert. 7/10. 



Indian Ocean and archipelago ; Polynesia and Australia. 



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

 Col. Playfair's Collection. 



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



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



— Type of T. argyroplnwa. 



e. Adult: stuffed. Madras. 



/. Young. Amboyna. Purchased of Hr. Frank. 



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



Collection. 

 h. Young. Philippine Islands. Purchased of Mr. Cuming. 

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

 7/!. Young. South Australia. From Mr. Bynoc's Collection. 

 /). Adult : stuffed. AustraUa ? Voyage of "H.M.S. ' Herald.' 

 0. Adult : stuffed. Presented by the Linnean Societj'. 

 p-q. Skulls. 

 r. Adnlt : skeleton. 



6. Tetrodon honckenii. 



Tetraodon honckenii, Bl. Ausl. Fisch. i. p. 133, tab. 143; Lacep. 



Pol.'^s. i. pp. 475, 492 ; Bl. Schn. p. 504 ; Blcek. Atl. Ichth. Gymnod. 



p. 60, pi. 2. fig. 2 ; Castelnaii, Poiss. Afr. Audi: p. 74. 



atratus, Bichnrds. I'^oy. Samnrang, Fisli. p. 15, pi. 7. 



Holocantlius lagocephalus, Gronuv. Syd. ed. Gray, p. 25. 

 Gasti'opliysns honckenii, Bleah. Nat. Tyds. Ned. Ind. vii. p. 258. 



Back covered with very small spines from the nostrils nearly to 

 the dorsal fin ; abdomen entirely covei-ed 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 



