EXPLORATIONS OF THE ALLEGHANY REGION AND WESTERN INDIANA. 123 
dark edging on some of the scales. This marking seems to be constant, but the size 
and arrangement of the bars vary much. Eye rather small, 3.^ in liead; snout rather 
short aud blunt; body rather deep (depth 3f). Lat. 1. 37. 15 scales before dorsal. 
Dorsal and anal rather high, the free edges concave. 
Notropis megalops albeolus reaches a larger size; it is olivaceous above, the sides 
and fins pure silvery white, the tip of the snout pinkish in the male. The snout in 
var. albeolus is sharper than in var. megalops, and the caudal peduncle and fin are 
especially longer. Depth of adult, 4 in length ; eye 3J in head ; lat. 1. 38 ; 14 scales 
before dorsal. The dorsal and anal are higli, their free edges concave. The form of 
the mouth in both varieties is the same as in the typical megalops. The young of var. 
albeolus resembles N. macdonaldi, but the mouth is larger in the latter and the body 
still more slender. 
12. Notropis ardens (Cope). 
Very common. Male steel blue in life, with more or less of bright red on fins, 
head, and anterior part of body ; base of dorsal anteriorly black ; females very pale. 
I have compared this species with its western analogues V. atripes, Cache River, Illi- 
nois; V. lythrurns, Raccoon Creek, Parke County, Indiana; and N. urnbratUis, Hun- 
dred and Two River, Iowa. It differs from all these in the much more slender body 
(the depth 4-| in the length, even in the adult males), and in the larger eye (3J in head). 
It should, I thiuk, be regarded as a different species, although the difference is but 
slight. iV umbratilis is well distinguished by its different coloration and large eye. 
The three remaining nominal species of this type found in the Upper Mississippi 
region (V. cyanoeeplialus, N. lythrurus, and N. atripes) differ very little from each other, 
and may be regarded as variet ies of one, for which the oldest tenable name is N. cyano- 
cephalus (Copeland). 
13. Notropis niveus (Cope). 
Common. 
14. Hybopsis kentuckiensis (Raflnesque). 
Very common. 
15. Rhinichtliys atronasus (Mitchill). 
In brooks. Barbel a little more conspicuous than usual. 
16. Squaliiis vandoisulus (Cuv. & Val.). 
Rare ; in Back Creek only. 
17. Anguilla anguilla rostrata (Le Sueur). 
Common. 
18. Micropterus dolomieu (Lac6pfede). 
Scarce. 
19. Ambloplites rupestris cavifrons (Cope). “ Red Eye.” 
Two specimens taken; one very large example, 9 inches long, in a pool of Bottom 
Creek, and a small one in the river. The stomach of the large specimen was filled 
with minnows and “Mad Toms.” The smaller corresponds to the description of Amblo- 
plites cavifrons Cope. On comparing the adnlt examples with Ambloplites rupestris 
from Rawsou Lake, Michigan, I find but a single tangible difference. In A. cavifrons 
the scales on the cheek are minute and imbedded, wholly invisible over most of the 
