Class IV. RIVER BULL HEAD. 



291 



GENUS XXX. BULL HEAD. 



Head large flat, armed with sharp spines. 

 Rays branchiostegous six. 



Bolfog. Arist. Hist. an. Lib. 



iv. c. 8. 

 Chabot. Belon, 213. 

 Cottus. Rondel. Fluviat. 202. 

 Gobio capitatus. Gesner pise. 



401. 

 Een Miiller. Schivenchfelt 



Siles. 431. 

 Bull-head, Miller's Thumb. 



Wil. Ichth. 137- Rati Syn. 



pise. 76. 

 Cottus alepidotus glaber, ca- 



pite diacantho. Arted. Sy~ 1. River. 



non. 76. 

 Cottus Gobio. C. lsevis, ca- 



pite spinis duabus. Lin. Syst. 



452. Gm.Lin. 1211. 

 Sten - simpa, Slagg - simpa. 



Faun. Suec. No. 323. 

 Koppe. Kram. 384. Gronov. 



Zooph. No. 270. 

 Le Chabot. Block ichth. ii. 11. 



tab. 2Q.f. 1.2. 

 De la Cepede Hist, des Pois- 



sons, 'in. 252. 



jL HIS species is very common in all our clear 

 brooks; it lies almost always at the bottom, 

 either on the gravel or under a stone, deposits 

 its spawn in a hole it forms in the gravel, and 

 quits it with great reluctance. It feeds on 

 water insects ; and we found in the stomach of 

 one the remains of the fresh water shrimp, the 

 pule.v aquatilis of Kay. 



u 2 



