161 



Campostoma brevis. 



By J. D. Haseman. 



July 29, 1904, a class from the Indiana University Biological Station 

 took a trip to the Wabash River to a point three miles above Wabash, 

 Indiana. On examining the material I found, among many specimens of 

 Campostoma, that seven were different from the common species, 

 anomalum. 



Later, I took a similar specimen from Deed's Creek, which is a small 

 tributary to Tippecanoe River, three miles north of Winona Lake. 



Type; a specimen 7.5 cm. long to base of caudal. No. I. U., 



Wabash River. 



Cotype; a specimen 9.25 cm. long to base of caudal. No. I. U., 



Wabash River. 



Cotype; a specimen S.l cm. long to base of caudal. No. I. U., 



Wabash River. 



Cotypes; 2 specimens 0.5 cm. long to base of caudal. No. I. U., 



Wabash River. 

 Cotype; a specimen 7.8 cm. long to base of caudal. No. - - I. U.. 



Wabash River. 

 Cotype; a specimen 7 cm. long to base of caudal. No. - - I. U., 



Deed's Creek. 

 D. 8; A. 7; scales 7-53-0; 22 scales before the dorsal; lateral line com- 

 plete (50 or 51 pores) equidistant from the dorsal and ventrals; depth 

 equals the length of the head and is contained 4.25 times in length of 

 body; eye 4-5 in head; a large anal papilla; a breast plate between ven- 

 trals; a dark band in middle of dorsal and a faint one in anal; the alimen- 

 tary canal is about 2* times the length of body. 



The scales are more readily deciduous in anomalum than in the new 

 species, and anomalum is a little darker and has a darker peritom-um 

 than "brevis." The alimentary canal of the new species is not half as 

 long as that of anomalum and almost twice the diameter. 



11— A. of Science. 



