432 Mr. A. Alcock on undescribed Shore- Fishes 



description it will, I think, be admitted justifiable to class 

 Tceniolahrus among the Trichonotidas. 



Family Gobiidae. 



Amblyopus, C. & V. 



Amhlyopus arctocephalus , sp. n. 



D. 4V A. 41. L. rect. 50-52. 



Head angular, its opercular region somewhat inflated, its 

 vertex compressed into a sharp carina, its length one sixth 

 of the total. 



Body compressed, its height, which is 1\ in the total, 

 diminishes very slightly from nape to base of caudal. Eyes 

 completely hidden. 



Snout broad, with the lower jaw prominent. Mouth-cleft 

 oblique, wide, the length of the maxilla being 2§ in that of 

 the head ; the upper lip with a short broad barbel on each 

 side ; the mandibular symphysis with a bony rugose knob. 

 In each jaw a row of small, close, even, acute teeth, and 

 external to these in the front of the premaxilla, on each side, 

 two large canines, and in the mandible five, of which two 

 are lateral and one (the largest) median. 



Head naked ; body covered with thin, smooth, hardly 

 imbricate scales, which increase in size from before backwards. 



Dorsal and anal fins low, enveloped in skin, confluent with 

 the pointed caudal. Pectorals with the four or five upper 

 rays as long as the maxilla, the lower rays extremely short. 

 Ventrals jugular, small, cohering ; their length is not quite 

 one third the body-height. 



Stomach large, saccular ; no pyloric caeca. A large, 

 globular, thick-walled air-bladder. Anal papilla large, 

 bilobed. Eleven abdominal, seventeen caudal vertebra?. 



Colours in life mottled pink, fins hyaline. 



Length 5 inches. 



Off IkUhdnaddi Delta, 50 fathoms; bottom mud. Off 

 Yizagapatam coast, 20 to 25 fathoms; bottom mud. 



AjSI A C A NTH INI. 



Family Ophidiidae. 



DiNEMATiciiTHVs, Blceker. 



Dinemati'chthi/s pi'ger, sp. n. 



1). circ. 75. A. circ. 55. L. lat. circ. 90. 



Head conoid, inflated, with loose integument ; its length 



