102 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY II, 



28. NOTURUS LEFT ACANTHUS, Jordan. 



Weak-spiiied Stone Cat. 



( Figs. 64 and 65. ) 



Nolnriis Icptacanlhvs, Johban (1876), MSS. — Jordan & Copeland, Check List, 160 

 (name only). — Jordan (1877), Anu. Lye. Nat. Hist. — . 



Habitat. — Etowah River, Georgia. 



But a siDgle specimen of this species is known ; it is, however, totally 

 distinct from all the rest; its relations are chiefly with gyrinus. 



29. NOTURUS GYRINUS, {MitcMll) Bafinesque. 

 Tadpole Stone Cat. 



(Fig. 66 and 67.) 



Silurua gyrinus, Mitchill (1818), Am. Monthly Mag. March, 322. — De Kay (1842), 



Fishes N. Y. 186. 

 ^'oturus gyrinus, Rak. (1819), Journ. de Physique, 421; (1820), Ich. Oh. 68.— Gill 



(1862), Proc. Bost. Soc. Nat. Hist. 45.— Cope (1869), Journ. Acad. Nat. Sci. 



Phila. 237.— Jordan (1876), Man. Vert. 303.— Jordan & Copeland (1876), 



Check List, 160. — Jordan (1877), Ann. Lye. Nat. Hist. — . 

 Schilbeodes gyrinus, Bleeker (185S), I.e. 



Habitat. — Southern New York to Pennsylvania. 



I have examined specimens of this species from Orange, Rockland, 

 and Chemung Counties, New York. It resembles the next, but is in 

 every way slenderer and weaker. 



30. NOTURUS SIALIS, Jordan, sp. nov. 



Chubby Stone Cat. 



(Figs. 68 and 69.) 



Noturus flarus, Jordan (1876), Man. Vert. 303 (in part).— Nelson (1876), Bull. Ills. 

 Mus. Nat. Hist. 50.— Jordan (1877), Proc. Acad. Nat. Sci. Phila. 46. 



Habitat. — Entire Mississippi Valley, Great Lake Region, and in Red 

 Iliver of the North. 



Comparison of eastern and western specimens referred to gyrinus show 

 surprising diiferences of form, and as these differences appear to be con- 

 stant in a great number of specimens examined from widely separated 

 localities, I have decided to separate the western form as a distinct 

 species. 



The eastern form, or gyrinus, has the head shorter and every way 

 smaller, and the. body proper more elongate, more compressed, almost 

 libbou-shapcd, and the spines rather weaker. The coloration is the 



