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, Jc. Large skulls. Neckar. From Dr. A. Giinther's Collection. 



I. Adult. Cambridge. Mus. Leach. 



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



n. Adult : not good state. London. Presented by W. Yarrell, Escj. 



0. Adult. Devon. Mus. Leach. 



p-t. Half-grown and adult. 



itf. Half- grown. 



On the varieties and the anatomy see Gimthcr, NicJcarfische, 

 pp. 20-28. 



2. Cottus pcecilopus. 



Coitus pcecilopus, Ilechel, Ann. Wiot. Mus. ii. 18.39, taf. 8. f. 1,2*; 



Norihn. in Demid. Voj/. Russ. Mcrid. iii. p. 377. 

 gobio, var., Gthr. Ncckarf. p. 25. 



D. 8-9 I 16-18. A. 13-14. Ca^e. pylor. 4-5. 



Skin smooth. No spines on the head, except on the pra^operculum, 

 which is armed with a small curved spine, and on the suboperculum, 

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

 of the body, not reaching to the caudal, and tei-niinating 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 third dorsal ray. The vcutrals 

 extend to the vent. Fins dotted with brown. 



Karpathians ; Pyrenees. 



a. Fine specimen. Hungary. 



3. Cottus cognatus. 



Richards. Faun. Bor. Amer. iii. p. 40; Heckel, Ann. Wicn. Miis. ii. 

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

 Proc. Bost. Soc. Nat. Hist. 1850, iii. p. 189, and Smitlison. Contrib. 

 I. c. p. 41. 



D. 8 I 18. A. 14. Ca5c. pylor. 4. 



Skin smooth. No spines on the head, except those of the prae- 

 and suboperculum, as in C. gohio. The lateral line is nearer to the 

 ridge of the back than to the belly. 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. {Rich.) 



Great Bear Lake. 



4. Cottus gracilis. 



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

 gracilis. 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 Smithson. Contrib. I. c. p. 49. pi. 1. f. 11, 12, 



* The figure given in HerkcJ and Kner, Sil^iswasaerfsche, p. 31. represents the 

 lateral line faulty. 



