1G8 CONTPJBUTIONS TO NORTH AMERICAN ICHTHYOLOGY IV. 
ill! plain. Ilead 4; depth 5. Scales 5-3G-4; teeth 4-4. L. 2i inches. 
Ohio A^alley and lake region; generally ahiindaut in small streams. 
One of the most insignificant of all our fishes. 
^WjlmjnatUus sircanincus Cope, Proc. Acad. Nat. Sci. Pliila. 1864, 2S3: mjlopsis stra- 
milieus Cope, Cypr. Peuu. 381.) 
21©. C. voliaceSJa (Cope) J. & G. 
Body moderately stout. Bead depressed, elongate, the vertex plane, 
the muzzle elongate. Fins more elongate than in most of the related 
species, the pectorals reaching the ventrals. Caudal peduncle slender. 
Fye in head. Olivaceous, a slight dusky lateral shade; no dorsal 
stripe; fins plain. Head 3f; depth 4. D. 8; A. 8 ; scales 4-34-3; 
teeth 4-4. L. 2i inches. Michigan and Wisconsin. ^ 
inyborjnathus volneelUs Cope, Proc. Acad. Nat. Sci. Phila. 1864, 283; Uyhopsis vain- 
cellus Cope, Cypv. Peuu. 381: Leiiciscus volucelliis Guutlier, vu, 260.) 
211. C. micr<»sloBBaa (Raf.) J. & G. 
Body elongate, the caudal peduncle not contracted. Mouth iufeiioi, 
horizontal, small, the maxillary not reaching the line of the eye. Fins 
rather short. Eye large, 3^ in head. Fourteen scales before dorsal, 
l^reorbital bone much longer than deep. Olivaceous, translucent ; a sil- 
very lateral band, along whicli is a black speck at the origin of each 
tube of the lateral line. 1). 8 ; A. 7 ; scales 5-33-2 ; teeth 4-4. L. 2^ 
inches. Virginia to Ixentucky. 
{Minnilus microstomus Raf. Iclith. OR. 
Nat. Sci. Phila. 1868, 231.) 
1820, 47 : Ilijhopsis longicejis Cope, Jouru. Acad. 
212. C. SiBieollala (Agassiz) J. & G. 
Body slender. Head short. Muzzle obtuse. Mouth slightly oblique, 
the jaws equal, the maxillary reaching to eye. Lateral line slightly de- 
curved. Olivaceous, sides silvery, with dark points along the lateral 
line, these especially abundant along the sides of the muzzle. Head 
4.V ; depth 4f . H. 8 ; A. 7 ; scales C-34-4 ; teeth 4-4. L. 2 inches. 
Nebraska to Colorado. {Cope.) Osage River. {Agassiz.) 
( A Ihimias Uneolafus Agassiz, Bull. Mus. Coiup. Zool. 1863, 9 : Leuciscus UiieoJatus Gliu- 
tlier, vii, 260 : Hgbopsis scylla Cope, Haydeu’s Geol. Surv. Wyom. 18/2, 4.58.) 
213. C. Biiassuaa’iecasjs (Cope) J. &. G. 
Body stout, with large head and thick caudal peduncle. IMoiith sub- 
inferior, somewhat oblique, end of maxillary reaching line of orbiL 
Twelve scales in front of the dorsal fin. Fins rather long. Eye large, o 
in head. Coloration very pale olivaceous; a silvery lateral band and 
some dusky specks at base of caudal ; no dark dorsal line ; fins plain. 
