48 NORTHERN ZOOLOGY. 



[18.] 8. Cottus polyacanthocephalus. (Pallas.) Many-horned Bull-head. 



" Cottus polyacanthocephalus. Pall. Zoogr. Ross., p. 133, No. 104, pi. 23." 

 La cotte a tete tres epineuse. Cuv. et Val., iv., p. 177. 



This species was taken on the north-west coast of America, in the 60th degree 

 of latitude, off Cape St. Elias, by Billings. It approaches to quadricornis in its 

 characters, but its opercula are better armed. 



Fins.— D. 10 — 1/14 ; A. 12; P. 17; V. A; C. 15; and some small ones. 



(Hist, des Poiss.) 



[19.] 9. Cottus pistilliger. (Pallas.) Antler ed Bull-head. 



" Cottus pistilliger. Pall., Zooyr. Ross, t.iii., p. 143, pi. 20, f. 3 and 4." 

 Le Chaboisseau a bois de chevreuil. Cuv. et Val., iv.p. 193. 



This very curious Bull-head, which resembles C. diceraus in some of its cha- 

 racters, is found at Unalaschka, and also on the Kamtschatka coast. 

 F INS ._Z>. 9/ — 13 ; A. 16 ; C. 13 ; P. 18 ; V. 1/3. (Hist, des Poiss.) 



Cottus diceraus of Pallas, and C. claviger and ventralis found by Mr. Collie at 

 Kamtschatka, and described by Mr. Bennett in the Natural History Appendix to 

 Captain Beechey's Narrative, and also in the Histoire des Poissons, together with 

 C. Mertensii and C. marmoratus of the latter work, may possibly exist on the 

 eastern as well as on the western entrance to Behring's Straits ; but as they have 

 not been actually detected on the American coast, they are not entitled to a place 

 in the Fauna of that country. 



[20.] 1. Cottus (Aspidophorus Europ^eus.) (Cuvier.) The Pogge. 



Genus, Cottus. Sub-genus, Aspidophorus. Cuv , Lacep. 

 L'Aspidophore d'Europe (Aspid. Europceus) . Cuv. et Val., iv. p. 201. 



The Aspidophori are considered, in the Regne Animal, as forming merely a 

 sub-genus of Cottus, from which they are distinguished by the want of vomerine 



