SILVER FIN. 845 
caudal; fins plain; head 4; depth 5; D. 8; A. 8; scales 6.35-3; teeth 4-4. Length 24 
inches. 
Habitat, Michigan to Illinois. 
Diagnosis.—From the other species of this genus, this species may be 
known by its resemblance in form, and structure of mouth to the genus 
Minnilus. 
Habits—I have never seen this fish in life, and known nothing of its 
habits. 
66. Hupsonius H#MATURUS (Cope) Jordan. 
Red-tailed Minnow. 
Hybopsis hematurus, Coprn, Trans. Am. Philos. Soc. Phila, 1866, 382.—JORDAN, Man. 
Vert.. 2d Ed., 1878, 292. 
Leuciscus hematurus, GUNTHER, Cat. Fishes Brit. Mus., vii, 259. 
Description.—Body stoutish ; muzzle little obtuse ; mouth moderate, terminal, oblique, 
the maxillary extending to the orbit; eye three and a half in head; lateral line nearly 
straight ; plumbeous above; head dusky above ; a dusky lateral band, not shining; a 
dusky spot at base of caudal; caudal fin dull red in life; twenty-one rows of scales in 
front of dorsal; head 4; depth 44-5; D.8; A.7; scales 7-44-4. Length 22 inches. 
Habitat, Great Lake Region, not abundant. 
Diagnosis.—From the other members of this genus, H. hxmaturus may 
usually be known by its smailer scales. 
Habits.—This species has as yet only been recorded from tributaries of 
Lake Michigan, but it doubtless occurs in Northern Ohio. Nothing 
distinctive is known of its habits. 
66. HuDSONIUS ANALOSTANUS (Girard) Jordan. 
Silver Fin. 
Lweilus kentuckiensis, KIRTLAND, Boston Journ. Nat. Hist., v, 1845, 27, pl. 8, f.3 (not of 
Ratinesq ue). 
Cyprinella kentuckiensis, Copk, Proc. Acad. Nat. Sci. Phila., 1864, 279, 
Hypsilep's kentuckiensis, Cork, Trans. Am. Philos. Soc., 1866, 371. 
Leuciseus kentuckiensis, GUNTHER, Cat. Fishes, Brit. Mus., vii, 261. 
Cyprinella analostana, GIRARD, Proc Acad. Nat. Sci. Phila., 1859, 58. 
Hypsilepis analostanus, Copgk, Proc. Acad. Nat. Sci. Phila , 1867, 166. 
Leuciscus analostanus, GUNTHER, Cat. Fish. Brit. Mus., vii, 256. 
Luxilus analostanus, JORDAN, Man. Vert., 2d Ed., 1878, 294. 
Photogenis spilopterus, Cops, Trans. Am. Philos. Soe , 1866, 378. 
Leuciscus spilopterus, GUNTHER, Cat. Fishes, Brit. Mus., vii, 254. 
Description.—Body moderately elongate, somewhat compressed, the dorsal and ven- 
tral outlines regularly and gently arched; head rather short and deep; mouth rather 
small, quite oblique, the lower jaw received within the upper when the mouth is closed ; 
eye small, four and a half in head ; leaden silvery, bluish in the males; edges of scales 
