NOTROPIS 139 



margin of nostrils, 3.33 to 3.9 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 reaching vent, and pec- 

 torals 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 

 specimens, 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 misadven- 

 ture 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 A^. blemtiiis, 

 but is much deeper and more arched, and the head is slightly longer. 

 We have compared it with the type of 'Cliola Mora Jordan,' which 

 is considered a synonym of N. scylla, but it is not that species. 

 * * H< jf you 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. 34 



NOTROPIS GILBERTI Jordan & Meek 



Jordan & Meek, 1885, Proc. U. S. \at. 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 2h inches; form much 

 as in Ericymba buccata, the bod}^ 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 



