186/.] MR. F. DAY ON NEW INDIAN FISHKS. C99 



phalanges of four digits of manus 2, 2, 3, 2, of five digits of pes 

 2, 2, 3, 4, 2 ; no fold in front of the cloaeal aperture ; tail rather 

 thick, yet compressed at base ; no parotids ; twelve costal folds on 

 each side between axilla and groin ; palatine teeth forming a trans- 

 verse, slightly undulating, but subcontinuous series ; no sphenoidal 

 teeth ; muzzle not projecting beyond the end of the mandible ; 

 tongue entirely fixed, behind as well as in front, and only somewhat 

 free at each side ; no postorbital arch or process (?) ; two pre- 

 maxillse (?) ; carpus and tarsus ossified (?). 



Hab. Laos Mountains? 



Thus, if the generic distinctness of this form is to be considered 

 established, we shall have that degree of relationship to American 

 forms which, under the circumstances above mentioned, is not ano- 

 malous, while we shall not have that close aflfinity to a peculiarly 

 American form which was at first suspected to exist, and which 

 would be so very anomalous if found in a species belonging to the 

 true Indian region, whence P. persimilis was at one time supposed 

 to have come. 



4. On some New or imperfectly known Fishes of India. 

 By Surgeon Francis Day, F.ZS., F.L.S., Principal 

 Medical Storekeeper, Madras Army. 



During the last month I have obtained the following species of 

 fish, amongst many others, from the sea and fresh waters in the 

 neighbourhood of Madras. 



Serranus radiatus, sp. nov. 



B.vii. D. 11/15. P. 19. V. 1/5. A. 3/8. C. 15. L. 1. above 120. 



Length of specimen 4 inches. 



Length of head \, of pectoral +, of base of dorsal spines #, of base 

 of dorsal rays \, of base of anal \, of caudal ^ of the total length. 

 Height of head |, of body i, of dorsal spines §, of dorsal rays \, of 

 ventral -fj, of anal \ of the total length. 



Eye transversely oval, its upper margin near the profile ; diameter 

 ^ of length of head, 1 diameter from end of snout, | a diameter apart. 



General appearance rather elongated, and the dorsal profile slightlj' 

 more convex than the abdominal. 



Lower jaw the longest ; the posterior extremity of the upper jaw 

 reaches to beneath the posterior margin of the orbit. Praeopercle 

 slightly obhque posteriorly, which is serrated, three strong denticu- 

 latious at its angle, its horizontal margin entire. Sub- and inter- 

 opercles entire. Opercle with three flat spines, the central one of 

 which is the longest. 



Teeth in strong recurved villiform rows in both jaws, and a canine 

 on either side of the centre of the upper. Teeth on vomer and palate 

 in villiform bands, but much smaller than those in the jaws. 



