(41) 



Color in alcohol like that of B. macnlata. A row of obout 10 irreg- 

 ular blotches along the side, — sometimes obscure, especially before — and 

 six larger ones on the back. 31an)' smaller, irregular, angular specks be- 

 tween these rows. Belly immaculate. Stripe before eyes and blotch on 

 opercle. Median fins banded, others plain. Cache R. and Clear Cr., Un- 

 ion Co.: Johnson Co.; Pekin. 



This species makes it necessary to drop the complete lateral line as 

 a character of Boleosoma. In fact, this is often wanting on four or five 

 posterior scales in B, maculata. S. A. F.] 



Genus NAXOSTOMA, Putnam. 



14. Xanostoma zonale (Copel Jordan. Zoned Darter. (M. Y. 225.) 



Many specimens from Pine Creek in Ogle Co. 



Genus NOTHOXOTUS, Agassiz. 



15. * Nothonotux camurus (Cope) Jordan. Blue-breasted Darter. (M. V. 



225 ; Poeciliclithys niger Nelson, 34.^ 



A few specimens from White River in Indiana. 



Genus PCECILICHTHYS, Agassiz. 



16. Pcecilichthys variatus (Kirtland) Agassiz. Blue Darter. (M. V. 



226 : Pacilichthi/s cmruleus Nelson, 34. j 



G-enerally common in clear or gravelly streams — especially so 

 in the Wabash Valley. Farmineton ; Rock R., Ogle Co : Pekin, 

 111. 



17. Poecilichthys spectahilis Agassiz. Striped Blue Darter. (M. Y. 

 227; Nelson, 34.) 



With the preceding; rather less common and more fond of 

 ascending small streams; often found in waters with a mudd}- 

 bottom. Effingham Co.; Mackinaw Cr., McLean Co.; Pine Cr., 

 Ogle Co.; Cache R., Drury Cr., Clear Cr., and mud holes in 

 Union Co. 



[18. Poecilichthys asprigenis Forbes, n. s. 



Among some specimens from Pekin, 111., whose label as Pixcilichthys 

 spectabiUs had apparently served to disguise them, 1 observed a number 

 with scaly cheeks. Dr. Jordan has decided that these are neither sjyecfabilis, 

 nor jessise, and I have therefore described the series as a new species, al- 

 though the wide variation of so-called specific characters presented by them 

 suggests that several species of this genus may ultimately have to be merged. 

 I have not been able, however, with a large number of specimens to trace 

 the one wholly into the other, and I therefore leave them distinct for the 

 present. 



