1887.] PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 243 



with ooze as to make the dragging of a seiue a very diflacult and disa- 

 greeable task. 



1. Boleosoma olmstedi (Stor.) Ag. 



Two specimens secured; one with dorsal rays X, 13, the other IX, 12. 



2. Lepomis humilis (Grd.) Cope. 



Many specimens of this brilliantly colored fish were obtained here, 

 as at most other places visited. Two styles of coloration have been 

 described ; the one abounding in green and red, with orange spots, the 

 other with plainer colors and spots of olive-brown. I have no doubt 

 that the more gaudily ornamented individuals are males, and the 

 plainer ones females. The males obtained at Beloit have the belly, 

 breast, and lower fins orange-red and the sides of the body with orange 

 spots, which in life were probably scarlet. The females, often swollen 

 with spawn, are darker in general color and have on the sides spots of 

 olive-green or brown. Probably young males resemble the females. 



3. Lepomis cyanellus Raf. 

 Two specimens. 



4. Semotilus atromaculatus Mitchill. 



Seinotilus corporalis Jordan & Gilbert, Synop. Fishes N. A., 1832, 221. 



A single specimen. 



5. Phenacobius mirabilis (Grd.) Jor. 



One specimen. Snout much longer than the diameter of the eye 

 which is contained in the length of the head 4^ times. Head in length 

 ^. Teeth 4-4 ; scales 45. Eecalls Cope's Sarcidium scopiferum. 



6. Notropis megalops (Raf.) Jor. & M'k. 



Minnilus cornidus, Jordan & Gilbert, Synoi>8is, 186. 



7. Notropis lutrenis (Baird & Girard) Gilbert. 



Leuciscus lutrensis, Baird & Girard, Proc. Acad. Nat. Sci., Pliiia., 1853, 391. 



Leuciscus huhalinus, Baird & Girard, loc.cit.,391. 



Montana gibbosa, Girard, Proc. Acad., Phila., 1856, 201. 



Montana lejnda, Girard, Loc. cit., 197. 



Cyprinella umhrosa, Girard, loc. cit., 197. 



Cyprinella billlngsianaf , Cope, Haydeu'sAnnual Rep. G. & G. Survey, 1870, 439. 



Cyprinellaforbesi, Jordan, Bulletin Ills. State Lab. Nat. Hist., 1878. 57. 

 This species, at once the commonest and the most beautiful minnow 

 of the region west of the Mississippi, has suffered much at the hands of 

 describers. This is due, in a great measure, to its great variability in 

 form, dentition, colors, and probably scale-formula. With the possible 

 exception of Professor Cope's Cyprinella billingsiana, all the nominal 

 species cited above, together with others which Professors Jordan and 

 Gilbert have already shown to be not valid, and possibly others of 

 Girard's Cyprinellcv, such as gunnisoni and suavis, that have not been 

 identified by later students, must be included under the specific name 

 lutrensis, given by Baird and Girard in 1853. The genera Moniana and 

 Cyprinella were established on supposed differences in the dentition of 

 the species arranged under each. It is now evident, however, that these 



