1868. J DR. F. DAY ON A NEW GOBIOID FISH. 273 



Length of head |, of pectoral ^, of caudal ^, of base of first dor- 

 sal ^, of base of second dorsal ^, of base of anal i of the total length. 

 Height of head ^, of body i, of first dorsal ^, of second dorsal ^, 

 of ventral ^, of anal ^ of the total length. 



Eyes directed upwards and outwards, but not prominent ; dia- 

 meter ^ of length of head, nearly two diameters from end of snout, 

 and one diameter apart. 



Body subcylindrical, gradually tapering to the caudal fin ; sides 

 compressed, snout obtuse, cheeks inflated. 



Head two-thirds as long as broad, no tentacles ; opercles entire ; 

 gill-openings rather narrow, only extending opposite to the base of the 

 pectoral fin, and not on to the inferior surface of the head. Mouth 

 terminal ; upper jaw slightly the longest. Lips rather thick. 



Teeth tinged of a deep sienna colour, rather large and conical, 

 in one row in the upper jaw, whilst in the lower jaw they have a fine 

 band posterior to this external one. The outer tooth in the conical 

 row of the lower jaw is rather larger than the others and slightly re- 

 curved. No teeth on the palate. The inferior pharyngeal bones are 

 of an elongated triangular shape, with a median longitudinal suture, 

 and the teeth on it are villiform. The teeth on the superior pharyn- 

 geal are in two oval patches and of the same description. 



Fins. First dorsal spines weak, but without filamentous prolonga- 

 tions ; second dorsal rays of nearly equal length. Base of pectoral 

 fin wide. Ventrals adherent to one another, forming a sucker, the 

 base of which is well developed ; the fin is not adherent to the abdo- 

 men except at its base. Caudal rounded. 



Anal papillae well developed, and of a red colour. 



Scales, fourteen rows between the origin of the second dorsal and 

 that of the anal fin. None on the cheeks or on the head ; they are 

 smaller over the anterior part of the body than on the sides ; several 

 rows exist anterior to the dorsal fin. 



No lateral line. 



Colours. Generally light fulvous, with a bluish tinge along the 

 side, becoming dirty white below. Some irregular bands pass down 

 from the back towards the middle of the body, whilst some thin 

 black lines pass upwards along the abdomen opposite to the anal fin. 

 Cheeks glossed with silver. Pectoral, ventral, and anal whitish yel- 

 low. Both dorsals diaphanous, with from five to six rows of brown 

 dots. Caudal diaphanous, its upper half, or two-thirds, with eight 

 or nine vertical rows of spots. 



Hab. The backwaters around Madras, and tanks for at least sixty 

 miles inland, where, however, this species is not so common as the 

 Gobius giuris. 



Proc. Zool. Soc— 1868, No. XVIII. 



