252 FISHES. 



to fifteen distinct, narrow, blackish, vertical bars ; head 

 rather narrow; D. 13; A. 12; lat. 1. 42. Coastwise, 

 abundant, but ascending streams to their sources, hence 

 found in clear springs as far inland as Mich. (Cope), 

 Wisconsin (Copeland), Illinois, Colorado (Yarrow), 

 etc. \F. midtifasciatuSi (Les. ) Val.] Various marine 

 species of this genus, as well as of Cyprinodon, Hydrar- 

 gyra and Micristius are sometimes found in fresh waters 

 near the coast. 



2. ZYGONECTES, Agassiz. TOP MINNOWS. 

 < Haplochilus, Giinther. 

 X Hydrargyra, Pcecilia and Fundulus of Authors. 



1. Z. olivaceus, (Stor.) Ag. BLACK -SIDED KILLI- 

 FISH. TOP MINNOW. Depth 4| in length; head 4; 

 head broad, depressed; clear pale olive with a few dots 

 above; a wide purplish-black band along sides from snout 

 through eye to caudal, its margin usually serrated; D. 9; 

 A. 11; lat. 1. 34; length 2^- inches. Miss. Valley; abun- 

 dant. (Z. pulchellus and tenellus, Grd. F. aureus, 

 Cope, etc.) 



2. Z. notiii, Agassiz. STRIPED TOP MINNOW. A 

 broad band and several dotted lines along sides; the 

 darker continuous bands alternating with fainter inter- 

 rupted ones; males transversely banded; silvery below. 

 Mississippi Valley and Southern streams. 



3. Z. melanops, (Cope) Jordan. Yellowish brown; 

 belly golden; a black spot below eye; fins dotted; D. G; 

 A. 8; lat. 1. 31. Neuse R. 



4. Z. catenates, (Storer) Jordan. STUD FISH. MAY 

 FISH. Pale steel blue, sides with series of bright bronze 

 spots, forming very distinct longitudinal streaks; head 

 with bright green stripes; throat and bars on dorsal and 



