32. coTTus. 157 



d-f. Adult. Danube (Ulm). From the Stuttgart Museum. 



g. Adult. Neckar. From the Stuttgart Museum. 



h. Adult: skeleton. Neckar. From Dr. A. Giinther's Collection. 



i, k. Large skulls. Neekar. From Dr. A. Giinther's Collection. 



I. Adult. Cambridge. Mus. Leach. 



m. Adult : not good state. London. Presented by W. YarreU, Esq. 



n. Adult : not good state. London. Presented by W. TarreU, Esq. 



0. Adidt. Devon. Mus. Leach. 



p-t. Half-grown and adult. 



71. Half-gro-mi. 



On the varieties and the anatomy see GimtJier, Necl-arfische, 

 pp. 20-28. 



2. Cottus poecilopus. 



Cottus pojcilopus, Heckel, Ann. Wien. 3Ius. ii. 1839, taf. 8. f. 1, 2»; 



Norihn. m l)emid. Voi/. Hiiss. Merid. iii. p. 377. 

 gobio, var., Gthr. Neckarf. p. 25. 



D. 8-9 I 16-18. A. 13-14. C«c. pylor. 4-5. 



Skin smooth. N"o spines on the head, except on the praeoperculum, 

 which is armed with a small cui-ved spine, and on the suboperculum, 

 the spine of which is stiU smaller. Lateral line above the middle 

 of the body, not reaching to the caudal, and terminating near the 

 extremity of the dorsal. Vent in the middle of the distance between 

 the snout and the root of the caudal. The second dorsal and the 

 anal lower than the corresponchng part of the body ; the origin of 

 the anal falls vertically below the thii-d dorsal ray. The ventrals 

 extend to the vent. Fins dotted with brown. 



Karpathians ; Pyrenees. 



a. Fine specimen. Hungary. 



3. Cottus cognatiis. 



Richards. Faun. Bar. Amcr. iii. p. 40 ; Heckel, Ann. Wien. 3Lis. ii. 

 1836, p. 149 ; Girard, Proc. Amer. Assoc. Adv. Sc. ii. p. 410, and 

 P)-oc. Bost. Soc. Nat. Hist. 1850, iii. p. 189, and Smithson. Contrib. 

 I. c. p. 41. 



D. 8 I 18. A. 14. Ca^c. pylor. 4. 

 Sldn smooth. No spines on the head, except those of the prse- 

 and subopercidum, as in 0. gohio. The lateral line is nearer to the 

 ridge of the back than to the beUy. Vent nearer to the snout than 

 to the insertion of the caudal. The origin of the anal falls in the 

 vertical from the sixth dorsal ray. (Bich.) 

 Great Bear Lake. 



4. Cottus gracilis. 



Cottus gobio, Ayre,i, Bost. Journ. Nat. Hist. v. 1845, p. 121. pi. 11. 

 gi'acilis, Heck. Ann. Wien. Mus. ii. 1837, p. 148 ; Girard, Proc. 



Amer. Assoc. Adv. Sc. ii. 1850, p. 411, and Proc. Bost. Soc. Nat. Hist. 



iii. 1850, p. 189, and Smit/ison. Contrib. I. c. p. 49. pi. 1. f. 11, 12. 



* The figure given in Heeled and Kner, Sm.vu'asserfi.vhc, p. 31, represents the 

 lateral line faulty. 



