844 FISHES — CYPRINID^. 



Diagnosis. — This species much resembles H. stramineus, but differs in 

 proportionately greater length of the pectorals. It is found in the streams 

 of southern Michigan and Wisconsin, and doubtless in northern Ohio 

 also, though I have not seen it. Nothing' is known of its habits. 



64. HuDSONius STBAMiNEUS (Cope) Jordan. 



Straw-colored Minnovr. 



Hyhognaihus atramineua, CoPK, Proc. Acad. Nat. Soi. Phila , 1864, 283. 

 Hybopais itramineus, Cope, Trans, Am. Philos. Soc, 1826, 331 — Jordan, Man. Vert., 2d 

 Ed., 1878, 291. 



Description. — Body moderately stout, little compressed ; head rather broad, with 

 rounded angles ; mouth small, inferior, horizontal ; gnont very obtuse ; eye large, 3 in 

 head ; fifteen rows of scales in front of the dorsal fin ; pale olivaceous ; sides little sil- 

 very; usually a darker dorsal band ; fins all plain ; head 4 ; depth 5 ; scales 6-36-4 ; teeth 

 4-4. Length, 2i inches. 



Habitat, Ohio Valley and Lake region, abundant in small streams. 



Diagnosis. — This insignificant fish may be known by its large scales, 

 and, in general, by the absence of all peculiarities. 



Habits — This fish, the feeblest in structure of all our minnows, and one 

 of the smallest and dullest colored, occurs in considerable abundance 

 throughout the State, mostly inhabiting the small streams. It is found 

 in company with Hyhorhynchus notatus, which it considerably resembles. 

 The individuals of the latter are much more abundant. 



A related species which is found in Kentucky and Virginia, and may occur in Ohio, is 

 Sudioniua microstomua (Kaf.) Jor. {Minnilus microatemus Eaf., Sylopsie longiceps Cope), 

 characterized as follows : 



Body elongate, the caudal peduncle not contracted ; mouth Inferior, horizontal, small, 

 the maxillary not reaching the line of the eye ; fins rather short ; eye large, three and a 

 half in head ; fourteen scales before the dorsal ; preorbit^il bone mnch longer than 

 deep ; olivaceous, translucent, a silvery lateral band, along which is a black speck at 

 the origin of each tube of the lateral line ; D. 8 ; A. 7 ; soales 5-33-2 ; teeth 4-4. Length, 2^ 

 inches. 



65. HuDsoNitjs FRETENsis (Cope) Jordan. 



HylopsU fretensis, Cope, Trans. Am. Philos. Soc. Phila., 1866, 382.— Jordan, Man. Vert., 

 2d Ed., 1878, 292. 



Description — Body slender and compressed, resembling hotropia ; head convex between 

 orbits ; month quite oblique, the middle of the maxillary being opposite the line of the 

 pupil ; maxillary not reaching to orbit; eye three and a half in head ; seventeen rows of 

 scales in front of the dorsal; lateral line decuived; olivaceous, a dark median dorsal 

 band, a plumbeous silvery lateral shade ; cheeks silvery ; a dark spot at the base of the 



