. 102 



86. Notropis phenacobius, Forbes, 



Very rare, at Peoria ; not seen elsewhere. 



87. Notropis stramineus, Cope. — Straw-colored Minnow. 



(Bui. II, 57 ; Alburnops stramineus: Synop., 167; Cliola stram- 

 ineus: M. v., 291; Hybopsis stramineus.) 



This species is rare in our collections, and has occurred only in 

 rivers and small streams in Central and Northern Illinois. 



88.. Notropis fretensis, Cope. 



(Bui. II, 57 ; Alburnops fretensis: Synop., 167 ; Cliola Jretensig: 

 M. v., 292 ; Hybopsis fretensis.) 



Very rare in Illinois ; not more than a single specimen among all 

 our cyprinoids certainly belonging to this species. 



89. Notropis anogenus, Forbes. 



Thus far taken only in Fox Kiver, at McHenry, Illinois. 



90. Notropis heterodon, Cope. 



Thus far taken only in Fox Eiver, at McHenry, Illinois. 



(Bui. II, 62; Hemitremia heterodon: Synop., 163; do.) 



This is, within our limits, essentially a species of lakes and larger 

 streams in Northern Illinois, although the form with perfect lateral 

 line has been collected in small numbers from the southern extremity 

 of the State. It is one of the most abundant minnows in the small 

 lakes, northward. It likewise inhabits the Illinois Eiver and the 

 bottom lakes communicating with that stream. 



Genus 48. Cliola, Girard. 

 Silver Fins. 



91. Cliola vigilax, B. & G. 



(Bui. II, 56; Alburnops tuditanus: Synop., 165; Cliola tuditana.) 



Abundant in small streams throughout Illinois. Seems to have 

 been usually confounded with Pimephales notatus, to which it bears 

 a strong general resemblance. 



Genus 49. Pimephales, Raf. 

 Fat-heads. 



92. Pimephales notatus, Raf. — Blunt-nosed Minnow. 



(Bui. II, 55 and 5C^ ; Hyboi-hynchus notatus, Hyborhynchus supercil- 

 iosus: Synop., 159 and 160 ; do.) 



One of the commonest of our fishes ; extremely abundant in the 

 prairie streams which characterize so large a part of Illinois. It chiefly 



