SINT3LE-FINNED BULLHEAD. 



the head is elongated, compressed, and flattened 

 on the upper part, which is also marked by a longi- 

 tudinal channel : the snout is obtuse, and divided 

 into two lobes : the jaws are armed with a great 

 number of small teeth : the eyes are situated to- 

 wards the end of the snout, and ever each is a small 

 protuberance: the gill-covers are denticulated at 

 the edges : the fins are marked with dusky streaks, 

 and have very rough rays : the pectoral fins are 

 very large and of a rounded shape, as is likewise the 

 tail. 



SINGLE-PINNED BULLHEAD. 



Cottus Monopterygius. C. corpore loricato, elongate, fasciis 

 transversisfuscis, pinna dorsali umca, capite inermi. 



Bullhead with elongated mailed body marked by transverse 

 brown bands, single dorsal fin and unarmed head. 



Cottus monopterygius. C. dorsi pinna unica, capite inermi. 

 Lin. Syst. Nat. Gmel. p. 121'3. 



Cottus monopterygius. Block, t. J78. 



NATIVE of the Indian seas, and found about the 

 coasts of Tranquebar. Habit resembling that of 

 the two preceding species, but the body more 

 slender in proportion : it is covered by an octagonal 

 bony mail, which towards the tail becomes hex- 

 agonal : the eyes are situated near the top of the 

 head : the upper jaw is longer than the lower, and 

 furnished with two recurved spines : the gill-covers 



