492 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 



has spent a loiig life in scientific hibors in tlie Sonth, and who has 

 thereby done much to increase our knowledge of the geology and nat- 

 ural history of his own and neighboring States. 



Genus BOLEOSOMA, DeKay. 



4. Boleosoma maculatum, Agassiz. (No. 27, 443.) 



B. hn-vip'uuie, Cope, Proc. Amer. Phil. Soc. 1870, 268. 



A single specimen of a Boleosoma was obtained in Horsehuuter Creek 

 at Macon. An examination indicates that it is B. tnaculatum, although 

 it does not agree wholly with descriptions of that species. It is nuich 

 paler than specimens of that species obtained* in the streams about 

 Indianapolis. There are no dark bars on the back, and the spots usually 

 found alqjig the lateral line are not as conspicuous as common. The fin 

 formula is D. VIII, 12 ; A. I, 8. Lateral line 50. 



I do not believe that the separation of B. olmstedi and B. maculatum 

 as distinct species can be maintained. The characters most relied on in 

 distinguishing them are the difference in length of the soft dorsal, the 

 difference in the number of scales along the lateral Hue, and the smooth- 

 ness or scaliness of the cheeks. I have examined specimens in the 

 State collection at Normal, 111., labeled B. macnlatum, that appear to 

 combine these characters m all sorts of ways. Some have scaled cheeks, 

 55 vertical rows of scales, and dorsal fin-rays X, 12. Another specimen 

 noted has scaled cheeks, 48 rows of scales, and dorsal rays VIII, 11. 

 Another has bare, cheeks, 53 scales, dorsal IX, 12. Another, bare 

 cheeks, 46 scales, dorsal rays IX, 13. Specimens there labeled B. 

 olmstedi seem to be in no way different.* 



As to color, I have specimens from Western Illinois that are almost 

 black, especially the head, the vertical and the ventral fins. These are 

 males in their breeding dress, but they appear to be unusually dark. 



Genus IS^Al^OSTOMA, Putnam. 



5. Nanostoma zonale (Cope) Jordan. (No. 27,417.) 



raciliditlii/s zoiialis, Cope, Journ. Acad. N^at. Sci. Phila. 1869, 212. 

 Nanostoma zonale, Jordan, Bull. U. S. Nat. Mils. No. 10, 6, 1877. 



Two specimens of this beautiful species were seined in a shallow and 

 sandy creek flowing into the Chickasawha Eiver at Enterprise. They 

 differ in no way from described specimens, except that none of the 

 transverse bands anterior to the anal fin pass around the lower part of 

 the body. Even in this respect they are like a specimen mentioned by 

 Cope from the Miami Eiver, in Indiana. The belly, throat, and spaces 

 between the bars below the lateral line are, in spirits, pure white. 



* Since tlie above lines were penned I have received the October number of the 

 American Naturalist, from which I learn that Prof. S. A. Forbes, of the Illinois State 

 Laboratory of Natural History, in his iuteresting article on "The Food of the Darters", 

 regards the two so-called species as identical. Professor Jordan also informs me that 

 he now considers the two forms as merely "subspecies". 



