158 TRIGLIDJE. 



Uranidea qiiiescens, Dekay, New York Faun. 1842, p. 61. pi. 5. f. 14. 



? Cottus gobio, Kirtl. Bost. Journ. Nat. Hist. \. 1847, p. 342 



? Cottus bairdii, Girard, Proc. Amer. Assoc. Adv. Sc. ii. 1850, p. 410, 



and Proc. Post. Sac. Nat. Hist. iii. 1850, p. 189, and Smithson. 



Contr. I. c. p. 44. pi. 1. f. 5, 6. 



D. 8 I 16. A. 11-12. 



Skin smooth ; armature of head as in C. gobio. The lateral line 

 does not extend to the caudal ; the vent is nearer to the snout than 

 to the extremity of the caudal fin ; the first dorsal fin very low, its 

 height being less than one-half of that of the second ; the pectoral 

 extends somewhat beyond the origin of the anal ; the origin of the 

 anal faUs vertically below the third dorsal ray. Dorsal, pectoral, 

 caudal, and anal fins banded or spotted. 



Rivers of Ohio, Massachusetts, Connecticut, and New York. 



a. Half-grown. Boston. Presented by B. Wiristone, Esq. 



5. Cottus richardsonii. 



Agass. Lake Superior, 1850, p. 300 ; Girard, Proc. Amer. Assoc. Adv. Sc. 

 1850, p. 410, and Proc. Bost. Soc. Nat. Hist. iii. 1850, p. 189, and 

 Smithson. Contrib. p. 39. pi. 1. f. 1, 2, pi. 3. f. 18-21. 



D. 8 I 18. A. 14. 



Skin smooth ; armature of head as in C. gohio. Pectorals shorter 

 than the head ; the vent is in the middle of the distance between 

 the extremities of the snout and of the caudal fin ; the origin of 

 the anal falls vertically below the third dorsal ray. 



Lake Superior. 



6. Cottus alvordii. 

 Girard, Smithson. Contrib. I. c. p. 40. pi. i. f. 7, 8. 

 D. 7 I 16. A. 13. 



Skin smooth; armature of head as in C. gobio, with a second 

 additional, very smaU praeopercular spine beneath the larger one. 

 The lateral line disappears under the middle of the second dorsal ; 

 the vent is nearer to the snout than to the root of the caudal fin. 

 The first dorsal is about half as high as the second ; the pectoral 

 extends beyond the origin of the anal ; the origin of the anal falls 

 vertically below the third dorsal ray. Fins yellowish, the first dor- 

 sal with some blackish spots. (Gir.) 



Streams emptying into Lake Huron. 



7. Cottus franklinii. 



Agass. Lake Superior, 1850, p. 303 ; Girard, Proc. Amer. Assoc. Adv. 

 'Sc. ii. 1850, p. 411, and Proc. Bost. Soc. Nat. Hist. iii. 1850, p. 189, 

 and Smith's Contrib. I. c. p. 53. pi. 2. f. 5, 6, pi. 3. f. 10-13. 



D. 8 I 17. A. 12. 

 Skin smooth ; armature of the head as in C. gobio. The lateral 

 line disappears under the middle of the second dorsal fin ; the vent 



