1870.] 465 eaba 
ventrals. Total length 26 lines; to basis of dorsal 11 lines; to basis 
caudal 21 lines. 
Color white, a broad lateral silver band punctulated with strong black 
dots. A black band across operculum to orbit, and black spot on pre- 
orbital bone. Top of head to origin premaxillaries black shaded. 
Two marked bony ridges connected with the system of mucous tubes, 
diverge from the apices the premaxillary bones to the epiotic region 
on each side enclosing an urceolate interspace. 
From the Yadkin River, Roane County, North Carolina. 
54, ALBURNELLUS MATUTINUS, Cope. 
A compact slender species with small scales. Orbit large, contained 3.5 
times in length of head, and scarcely larger than length of muzzle, equal 
also interorbital width. Length of head contained 4.25 times in total less 
caudal fin, depth six times in same. Length of first dorsal ray just .33 
distance from its base to end of muzzle. Pectorals considerably short of 
ventrals, ventrals short of anal. R.A. I. 11. Twenty-five rows of scales 
across dorsal line in front of dorsal fin. 
Length 32 lines ; to basis dorsal 14.4 lines; to basis caudal 26 lines. 
Above olivaceous, edges of scales brown shaded ; lateral band plumbeous ; 
sides and below silvery, a dark spot at base of caudal fin. End of muzzle 
and chin bright rufous. 
From the Neuse River, in Wake County, North Carolina. The first 
species of the genus found in Atlantic waters. 
55. ALBURNELLUS MICROPTERYX, Cope. 
Journal Ac. Nat. Sci., Phila., 1868, 238. 
Several specimens of this species were taken in Coal Creek, a tributary 
of the Clinch River, Tennessee, and preserve exactly the characters by 
which this species was originally distinguished from A. jaculus m. 
CLINOSTOMUS, Girard. 
56. CLINOSTOMUS AFFINIS, Girard. 
Jour. A. Nat. Sci., Phila., 1868, 228. 
Very abundant in the waters of the Catawba and Yadkin. 
STILBE, Dekay. 
57. STILBE AMERICANA, Linn. 
Common in still and sluggish water of the Catawba, Yadkin and Neuse 
Basins. 
HYBOGNATHUS, Agass. 
The species of this genus are few, and have a.wide distribution. Those 
known to the writer are distinguished as follows : 
I. Suborbital bones broad, short ; speculum on postfrontal region large. 
Scales $; eye small, one-sixth of head, twice in muzzle ; A. 8. 
: H. PLACITUS. 
