(41) 
Color in alcohol like that of B. maculata. A row of obout 10 irreg- 
ular blotches along the side, — sometimes obscure, especially before — and 
six larger ones on the back. Many 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 NANOSTOMA, Putnam. 
14. Nanostoma zonale (Cope) Jordan. Zoned Darter. (M. Y. 225.) 
Many specimens from Pine Creek in Ogle Co. 
Genus NOTHONOTUS, Agassiz. 
15. * Nothonotus camurus (Cope) Jordan. Blue-breasted Darter. (M. Y. 
225 ; Poecilichthys niger Nelson, 34.) 
A few specimens from White River in Indiana. 
Genus POECILICHTHYS, Agassiz. 
16. Poecilichthys variatus (Kirtland) Agassiz. Blue Darter. (M. Y. 
226; Poecilichthys cseruleus Nelson, 34.) 
Generally common in clear or gravelly streams — especially so 
in the Wabash Yalley ; Farmington; Rock R., Ogle Co ; Pekin, 
111 . 
17. Poecilichthys spectabilis 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 muddy 
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 Poecilichthys 
spectabilis had apparently served to disguise them, 1 observed a number 
with scaly cheeks. Dr. Jordan has decided that these are neither spectabilis , 
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. 
