COITUS. BULLHEAD. 



Generic Character. 



Oaput coipore latius, spi- 

 nosum : Oculi verticales, 

 membrana nictitante in- 

 struct! . 



Membr: branch: radits sex. 



Corpus (plerisque) alepido- 

 tum, versus caudam at- 

 tenuatum. 



PiniifB dorsalcs (plerisque) 

 duae. 



Head broader than the body, 

 spiny : Eyes vertical, and 

 furnished with a nictitat- 

 ing membrane. 



Gill-membrane six-rayed. 



Body (in most species) with- 

 out scales, attenuated to- 

 wards tlie tail. 



Dor sal fins (in most species) 

 two. 



RIVER BULLHEAD. 



Cottus Gobio. C. Icevis olivaceo-flcccescens, pigro nariatus, subius 

 albicans, capite utrinque mucronato. 



Smooth yellowish-olive Bullhead, variegated with black ; be- 

 neath whitish; the head furnished with a spine on each side. 



Cottus Gobio. C. favis t capite spirits duabus. Lin. Syst. Nat. 

 p. 452. 



Cottus spinis curvatis duabus ad utrumque operculum. Block. 

 t.SS. 



Bullhead, or Miller's Thumb. Will. itcJith. 



River Bullhead. Pmn. Brit. Zool. 3. 



JL HIS species is an inhabitant of clear brooks 

 and rivers, and is found in most parts of Europe. 

 It generally remains at the bottom ; lying on 



