REGAN.—MARINE FISHES. 
ho 
Or 
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Tetrodontide, 
177. Spheroides hypselogenion, Blkr. 
Cargados Carajos, 20 to 30 fathoms. 
178. Spheroides spinosissimus, sp.n. (Plate 81. fig. 5.) 
Nostrils borne on a well-developed papilla. No distinct lateral fold. Length of head 
23 in the length of the fish. Snout short and broad, scarcely longer than the eye, the 
diameter of which is 33 in the length of head. Width of the slightly concave interorbital 
region 43 in the length of head, much less than the interocular width. Head and body, 
except the tail, entirely covered with rather strong two-rooted spines. Dorsal 8, pointed, 
the anterior rays longest, $ 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 diffuse 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 genus Diodon. 
179. Tetrodon stellatus, Bl. Schn. 
Cargados Carajos, 20 to 30 fathoms. 
180. Tetrodon meleagris, Lacep. 
Chagos Archipelago, Peros. 
181. Tetrodon nigropunctatus, Bl. Schn. 
Seychelles Group, Coetivy. 
182. Tropidichthys valentini, Blkr. 
Maldives, Haddumati, 40 fathoms; Seychelles, 37 fathoms. 
188. Tropidichthys caudofasciatus, Gthr. 
Seychelles Group, Amirante, 30 fathoms, and Seychelles, 37 fathoms. 
184. Tropidichthys natalensis, Gthr. 
Seychelles Group, Coetivy. 
185. Tropidichthys benneétii, Blkr. 
Maldives. 
