1867.] MR. F. DAY ON INDIAN FISHES. .559 



head ^, of body i, of hard dorsal y\^, of ventral ^, of anal yL of the 

 total length. 



Eyes circular ; diameter f of length of head, 1 1 diameter apart, 

 2^ diameters from end of snout. 



Jaws of equal length. Cleft of mouth extends two-thirds the 

 distance to beneath the anterior margin of the orbit. Preopercle 

 entire ; posterior limb nearly vertical and slightly emarginate, angle 

 rounded. Opercle with two very dull points. Sub- and inter- 

 opercles entire. Five rows of scales on the opercle, none on the 

 cheeks. 



Teeth. Anteriorly in both jaws some canines, with several rows of 

 conical ones posterior to them, and molars with rounded crowns in 

 the posterior part of the jaws. No teeth on vomer or palate. 



Fins. Dorsal spines moderately strong, extending over three-fifths 

 of the base of the fin ; third and fourth spines the longest ; a fleshy 

 sheath, thickest posteriorly, runs along the base of the fin. Third 

 anal spine the longest. Caudal luuated. 



Colours. Olivaceous brown, becoming lighter on the abdomen ; 

 the centre of each scale having a cerulean-blue spot, which, reaching 

 almost across it, forms blue lines in the direction taken by the rows 

 of the scales. Pectoral flesh-coloured, with the base of the second, 

 a wide undivided ray, of bright blue. Ventral bluish slate-colour. 

 Dorsal and anal slate-coloured, margined with orange. Caudal 

 bluish. Eyes golden. The whole of the inside of the mouth and 

 fauces bright orange. 



Hub. Madras. 



Seriolichthys uneolatus, sp. nov. 



B. vii. D. 6j^|ll. P. 21. V. 1/5. A.^|II. C. 16. L. 1. 

 96. L.tr. 16/28. 



Length of specimens 1 1^ inches. 



Length of head i, of base of first dorsal -^, of base of second 

 dorsal ^, of pectoral ^, of base of anal ^, of caudal j of the total 

 length. Height of head ^, of body i, of dorsal spines ^-^, of dorsal 

 rays -^t of ventral ^, of anal rays ^ of the total length. 



Eyes. Transverse diameter slightly the longest, upper margin close 

 to the profile ; a narrow adipose lid along either side of the eye. 

 Diameter | of length of head, 1 diameter apart, I5 diameter from 

 end of snout. 



Body elongated and compressed, its greatest height being oppo- 

 site the origin of the soft dorsal. 



Head compressed ; snout rather produced. Gape of mouth slightly 

 narrow ; posterior margin of upper jaw reaches to below the anterior 

 margin of the orbit, and is partially hidden by the preorbital, which 

 has some elevated stellated ridges along its upper portion. A rather 

 high central longitudinal crest along the summit of the head, and a 

 smaller one passing backwards and slightly inwards from before the 

 anterior margin of the orbit. Nostrils midway between orbit and 

 end of the snout. Vertical limb of praeoperculum entire and directed 



