CYPRINODONTIDA. — XXXVI. 85 
of back ; a black spot on D.; lower fins sometimes yellow, and top 
of head black; $9 much larger than @, paler, a black band on 
level of eye with two shorter bands below it; one or two black 
cross-bars at base of C. Head 33; depth 4. D.12. A.10. Scales 
36-13. L. 6. Cape Cod to Fla.; the largest of the genus, common 
in shallow bays. S. occurs F. similis Baird & Girard, with scales 
33, and both sexes resembling ¢ of F. majalis. (Lat., pertaining 
to May.) 
bb. Branchiostegals 5: g with silvery spots and bars; ? nearly plain oliva- 
ceous; young with black cross-bars. 
202. F. heteroclitus (Linneus). Common Kinuirisu. Mum- 
micHoG. Mup-Frisu. Body short, deep, the head short, broad; 
eye about equal to snout; ¢ dark green, sometimes orange below, 
sides with scattered yellowish spots, sometimes running into silvery 
cross-bars; vertical fins dark, with pale spots, usually a’ black spot 
on D.; young ¢ with 9 or 10 silvery bars; young 9 with 9 or 10 
black bars; adult 9 nearly plain. Head 32; depth 3}. D. 11. 
A.10. Scales 35-12. L.2to5. Maine to Mexico; everywhere 
common along shore, in shallow water; S. specimens (var. grandis 
Baird & Girard) larger and brighter. (F'. pisculentus Mitchill; 
F. nigrofasciatus Le Sueur.) (€repos, different; xAirvs, slope.) 
aa. Scales moderate, 43 to 50 in longitudinal series. 
c. Dorsal inserted before A.; sides with many dark cross-bands. 
203. F. diaphanus (Le Sueur). Body rather slender; head 
slender, flat above; fins low. Olivaceous, sides silvery, with 15 to 
25 narrow dark cross-bands; fins nearly plain. Western specimens, 
var. menona Jordan & Copeland (Ohio, W.) have the bands very 
distinct, and somewhat irregular; the back always spotted ; some- 
times silvery cross-bands replace the darker. KE. specimens (Cay- 
uga L., N. Y. Bay) have the back plain, the bands faint and 
regular. Head 3} to4; depth 5. D.13. A.11. Scales 46-12. 
L. 4. Great Lakes and tributaries, E. to coast of Mass., S. to N. 
Ind., W. to Colorado, ascending clear streams to their sources, also 
in lakes and river mouths. 
cc. D. inserted over front of A.; sides with regular series of orange or 
brown spots. 
204. F. catenatus (Storer). Srup-risu. Body long, com- 
pressed; head broad; color greenish; ¢ with an orange spot on 
each scale, 9 with smaller brown spots, these forming continuous 
stripes. Head 4; depth 44. D. 14. A. 15. L. 7. Mountain 
streams, E. Tenn. and Ozark region; very pretty. In Alabama 
R. is a still brighter species (F. stellifer Jordan), with scattered 
orange spots. (Lat., with chain-like lines.) 
aaa. Scales very small, about 60 in a longitudinal series; sides barred. 
