FISHES OF THE CONNECTICUT LAKES. 25 
3. Rep-BeLLIeED Minnow. Chrosomus erythrogaster Rafinesque. 
Head 4; depth 4 (4.2 to 5); eye 3.5; snout 3.8; dorsal 8; anal 8; scales 
18-80 to 85-10; teeth 5-5. Body moderately elongate and thick, slightly com- 
pressed; head small, conical; snout slightly pointed; mouth moderate, termi- 
nal, oblique, the jaws about equal; maxillary reaching nearly to front of eye; 
eye large, in anterior part of head; lateral line usually ending before reaching 
as far as vent; origin of dorsal over space between vent and ventral origin, 
also midway between tip of snout and tip of rays in fork of caudal; caudal 
forked; anterior base of anal under posterior base of dorsal; ventrals reaching 
to vent; pectoral not nearly reaching origin of ventrals. 
Light olive on top of head and back; cheeks dusky; paler on sides; belly 
white; black line from nape to base of dorsal, splitting and passing along 
base of the fin on each side, reuniting behind and continuing to upper base of 
caudal; dusky stripe from upper posterior part of eye along side, breaking up 
into spots under dorsal fin, spots continuing nearly to caudal; another broader 
black stripe from snout through eye to base of caudal, where in small indi- 
viduals it ends in a small distinct spot; fins and lower parts all pale. In 
the breeding season the male has the lower fins and belly bright lemon-yellow 
and sometimes red between the two lateral stripes. 
The only fish with which this species is likely to be confounded is Leuwciscus 
neogeus, small individuals of which strikingly resemble it. The most promi- 
nent external mark of separation is the broken upper lateral stripe and small 
mouth of the red-bellied minnow. Of internal differences, this species has the 
lower pharyngeal teeth in one row, and possesses a long intestine, while the 
other has teeth in two rows and a short intestine. 
The only common name for this fish, so far as known to us, is the 
one given above. The distribution of the species has been given as 
from New York to the Dakotas and Tennessee. It is common in 
Maine, and the discovery of it in this region helps to fill the gap be- 
tween Maine and New York. We found it to be abundant in pools 
in a meadow or field near Indian Stream on August 4. It is one of 
the smallest of the minnow family, probably not attaining a length 
of much over 2 inches. Its long intestine indicates that it is mainly 
a vegetarian. The stomach and intestines of those examined by us 
contained mostly diatoms and some larval black flies. The breeding 
habits of the red-bellied minnow in this region were not observed by 
us, but in Freeport, Me., it was found spawning in June. It doubtless 
serves as food for the other fishes. It makes an attractive aquarium 
fish. 
4, Coup. Semotilus bullaris (Rafinesque). 
Head 4; depth 4; eye 7 (much larger in smaller examples); snout 2.6; 
maxillary 2.6; mandible 2.6; teeth 2, 4-5, 1; dorsal 8; anal 8; longest dorsal 
ray 1.3 in head; longest anal 1.75; longest pectoral 1.3; scales 8-51-6. 
Body moderately deep, elongate, compressed; caudal peduncle deep; head 
large; snout rather bluntly conic; mouth large, terminal, somewhat oblique; 
upper jaw slightly longer; maxillary not quite reaching anterior edge of orbit; 
eye large in small examples, small in large ones, high up and anterior; origin © 
of dorsal slightly nearer base of caudal than tip of snout, over sixteenth or 
Seventeenth scale of lateral line, edge of fin in a straight line; caudal deeply 
