NOTEOPIS 139 



in head. Teeth 4-4. Intestine about equal to head and body, .97 to 1.17. 

 Eye very large, circular, placed high up, 3.4 to 3.5 in head. Branchiostegals 

 free from isthmus. Dorsal 1-8, decidedly before ventrals, its length 7 to 8 

 in body; anal low, 1-8; paired fins rather broad and short; ventrals not reach- 

 ing vent, and pectorals falling far short of ventrals, the former 6.25 to 6.4 

 in head and body. The scales are thin, large, crowded anteriorly upon the 

 sides, breast wholly naked in all the specimens seen. Lateral line 35 to 36, 

 longitudinal rows 7 to 9, 13 to 14 before dorsal. Described from 10 speci- 

 mens, the only ones seen, all taken at Peoria. 



This species is retained with some hesitation, owing to the 

 fact that the ten type specimens obtained many years ago are 

 the only ones of it ever seen, and through some unaccountable 

 misadventure all but one of these types have disappeared* from 

 the State Laboratory collection. Concerning this species Dr. 

 Evermann writes me, under date of March 8, 1908, after an 

 examination of this type: '^In some respects this specimen 

 resembles N. hleiinius, but is much deeper and more arched, 

 and the head is slightly longer. We have compared it with 

 the tj^pe of 'Cliola Mora Jordan,' which is considered a synonym 

 of N . scylla, but it is not that species. * * * j£ y^^ have any 

 reason for believing that this specimen is the type of your A^. 

 phenacobius, I would be disposed to accept it as such and let 

 the species stand as good." 



Fig M 



NOTROPIS GILBERTI Jordan & Meek 



(Map XXXVI) 



Jordan & Meek, 1885, Proc. U. S. Nat. Mus., 4. 

 M. v., 57; J. & E., I, 266; L., 17. 



The long, broad, and flat head, comparatively inferior mouth, and 

 rather thick lips of this species distinguish it sufficiently from all other 

 Illinois species of the genus Notropis. Length 2^/^ inches; form much as 

 in Ericymha huccata, the body subfusiform, usually rather long and slender, 

 and the back gently and broadly elevated; depth 4.3 to 5; caudal peduncle 

 usually longer than head, slender, its depth 2.1 to 2.9 in its length. Color 

 light olive above; sides silvery; a conspicuous median dorsal stripe and a 

 plumbeous lateral streak; scales above dark-edged, those below lateral line 



