440 A Contribution to the Zod! ogy of Montana. [July, 
Pe bhi.—Lucioperca borea Richdn.—Abundant all along 
the river. The specimens agree very nearly with the description 
of L. canadensis, given by Jordan, but I find six long pyloric 
cœca, two a little shorter than the others. The second dorsal 
rays number nineteen in three specimens, the last one split. 
Girard gives the number as twenty. 
. Lota maculosa Leseur—Common ; Battle riei 
Nematognathi—Ichthelurus punctatus Raf—Pools left by the 
river near Battle creek. 
Plectospondyli—Semotilus corporalis Mitch.—Battle creek. 
Pogonichthys communis Gird.—Fort Benton, Judith river. 
Rhinichthys maxillosus Cope.—Battle creek. 
Phoxinus milnerianus Cope, sp: nov.— Form elongate; chin 
. slightly beyond upper lip. Pharyngeal teeth 2.5-4.2. Scales in 
fifteen longitudinal rows between the dorsal and ventral fins. 
Diametér of orbit equal to length of muzzle, and entering length 
of head three and a-half times. The latter enters the length to 
the origin of the caudal fin four times. The greatest depth enters 
the same five and a-half times. The dorsal fin originates above 
a point behind the entire base of the ventral. Radii D. I. 8. A. 
L. 8. The mouth is rather large, the extremity of the maxillary 
bone extending nearly to the line of the pupil of the eye. The 
head is rather flat above and wide, the parietal width being about 
one-third the length between the last dorsal ray and the base of 
the caudal. The distance to which the lateral line extends is 
unknown because the scales of the posterior part of the body 
are lost 
Color brownish-olive above ; below silvery. A black band, not 
well defined on the borders, extends from the end of the muzzle 
to the base of the caudal fin, where it terminates in a black pot 
A reddish spot.at the base of the anterior dorsal rays, muzzle 
ark. ngth, m. 0.065. 
This species differs from the P. xeogeus Cope, in its slender 
form and small number of rows of scales. It is dedicated to my 
friend Jas. W. Milner, of the U. S. Fish Commission. 
Chrosomus sp.—Small individuals from Battle creek. 
Hybognathus evansi Girard.—This fish was very abundant at 
Battle creek. It has the slender suborbital bones of the argyritts 
group, with the small eye of the zuchalis group, and is a well 
marked species. 
Hyborhynchus nigellus Cope—From Battle creek; originally 
described from Colorado in the Report of Lieut. G. M. Wheeler. - 
1 First Annual Report of the Ohio State Fish Comm., 1877, pp. 69-87. 
