EEGAN.— MAEINE FISHES. 253 



Tetrodontidae. 



177. Spheroides hypselogenion, Blkr. 

 Cargados Carajos, 20 to 30 fothoms. 



178. Spheroides spinosissimus, sp. n. (Plate 31. fig. 5.) 



Nostrils borne on a well-developed papilla. No distinct lateral fold. Length of head 

 2f in the length of the fish. Snout short and broad, scarcely longer than the eye, the 

 diameter of which is 3^ in the length of head. Width of the slightly concave interorbital 

 region 4^ in the length of head, much less than the interoeular width. Head and body, 

 except the tail, entirely covered with rather strong two-rooted spines. Dorsal 8, pointed, 

 the anterior rays longest, h the length of head. Anal 7. Caudal truncate. Brownish 

 above, pale below ; a blackish spot above and behind the eye ; a smaller blackish spot at 

 the base of the dorsal ; a diffiise dusky blotch on the side ; fins pale, the caudal with a 

 dark posterior edge. 



Saya de Malha Bank, over 123 fathoms. 



A single specimen, 90 mm. in total length. 



This fish bears a considerable resemblance to those of the gen vis Diodon. 



179. Tetrodon stellatns, Bl. Schn. 

 Cargados Carajos, 20 to 30 fathoms. 



180. Tetrodon meleagris, Lacep. 

 Chagos Archipelago, Peros. 



181. Tetrodon nigropunctatus, Bl. Schn. 

 Seychelles Group, Coetivy. 



182. Tropidichtliys valentini, Blkr. 



Maldives, Haddumati, 40 fathoms ; Seychelles, 37 fathoms. 



183. Tropidichthys caudofasciatus, Gthr. 



Seychelles Group, Amirante, 30 fathoms, and Seychelles, 37 fathoms. 



184. Tropidichthys natalensis, Gthr. 

 Seychelles Group, Coetivy. 



185. Tropidichthys bennettii, Blkr. 

 Maldives. 



