COTTUS. BULLHEAD. 



Generic Character. 



Caput corpore latins, spi- 

 nosum : Oculi verticales, 

 membrana nictitante in- 

 structi. 



Membr: branch: radiis sex. 



Corpus (plerhque) alepido- 

 tum, versus caudam at- 

 tenuatum. 



Pinnce dor sales (plerisque) 

 duse. 



Head broader than the body , 

 spiny : Eyes vertical, and 

 furnished with a nictitat- 

 ing membrane. 



Gill-membrane six-rayed. 



Body (inmost species) with- 

 out scales, attenuated to- 

 wards the tail. 



Dorsal fins (in most species) 

 two. 



RIVER BULLHEAD. 



Cottus Gobio. C loevis olivaceo-Jlavescens, pigro nariatus, subtus 

 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. Icevis, capite spinis duabus. Lin. Syst. Nat. 

 p. 452. 



Cottus spinis curvatis duabus ad utrumque operculum. Block, 

 t, 38. 



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

 River Bullhead. Penn. Brit. Zool. 3. 



T^HIS species is an inhabitant of clear brooks 

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

 It generally remains at the bottom 5 lying on the 



