10 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. [1885. 



9. ITotropis megalops, Eafinesque. 



10. Semotilus atromaculatus, Mitcbill. 



11. Xjepomis cyanellus, Rafinesqne. 



12. Etheostoma iowae, sp. nov. 



Three specimeuy. lu life, light green, finely blotched with darker 

 green ; a dark- green blotch on oi^ercle ; a dark stripe below eye. Lower 

 fins plain. Spinous dorsal shaded with light red, its edge darker red, 

 almost black on the posterior edge. Soft dorsal and caudal barred 

 with green speckles. 



Head, 3f ; depth, 5 J. D. IX-11 ; A. II, 7. Scales, 5-59-9. Lateral 

 line with tubes on 28 scales. Length, about 2 inches. 



Body rather more elongate than in E.jensicc (=rtS2^n^e?M'.<?, Forbes), the 

 caudal peduncle rather long and slender. Head moderately acute, the 

 snout a little decurved, its length about equal to that of the eye, which 

 is 5 in head. Mouth small, nearly horizontal, the lower jaw included, 

 the maxillary reaching to opposite front of eye, its length 4 in head. 

 Teeth rather small. Preopercle entire. Opercular spine strong. Gill 

 membranes scarcely connected. No black humeral scale. Cheeks, 

 opercles, and nape closely scaled. Breast naked. Top of head with- 

 out scales. 



Scales smaller than in E. jessice. Lateral line straight, ceasing near 

 the middle of the body. 



Fins all low, the spines slender. Dorsal fins well separated, caudal 

 subtruncate. Pectorals IJ in head. 



This species much resembles ^. JessicD, and may prove to be identical 

 with it. Numerous specimens of the latter from Illinois (typical of P. 

 asprigenis) have been compared with the types of E. iowce. E. jessiae 

 is less elongate, with longer and higher fins, and we find but 47 to 50 

 scales in its lateral line. Otherwise, no difference of importance ap- 

 pears. ' 



13. BoleoBoma olmstedi maculatum, Agassiz. 

 Not uncommon. 



O. — Hundred and Two River. 



The two forks of the Hundred and Two Eiver, near Bedford, Iowa, 

 have the same character as the Chariton River, the bottom being still 

 more* muddy and the current equally sluggish. An abandoned stone 

 quarry at Bedford has become filled with water from the river, and in 

 this reservoir we obtained many specimens. 



At Maryville, Missouri, the river is considerably larger than at Bed- 

 lord, and has more current. The general character of the stream is, 

 however, similar. Specimens were obtained at both these localities. 



1. Notunis flavus, Eafinesque. 



2. Amiurus melas, Rafinesque. 



These specimens correspond ex act! j^ to the type of .4 mtwrjKs t'm^m^, 

 Gilbert (Bull. Washburn Soc. Nat. Hist., 1883) and also to the type of 



