I'ACIFIC KKKSI1 WATKk WISHES. 259 



Family CYPRINID^E. 



3. Campostoma ornatum Girard. (Campostoma fried 

 Jordan & Thoburn.) 



Five specimens, i% to 4 in. long, from Rucker Canon, 

 Chiricahua Mountains, Ariz. 



I lead y/> to 4 in length; eye 373 to 4^ in head, 5^ 

 in an adult male; 31 to 35 scales before dorsal [31, 34, 

 35, 35]. Origin of dorsal midway between nostrils and 

 rudimentary caudal rays. Maxillary extending to below 

 anterior nostril; top of head i}4 in distance from occi- 

 put to dorsal (1% in one specimen). 



These specimens are from the exact type locality o! the 

 specimen upon which Jordan and Thoburn based their 

 description of Campostoma pricei (Fishes of North Amer- 

 ica, Jordan and Evermann, p. 205), and their type speci- 

 men is included in the notes here given. The receipt of 

 more material and its comparison with specimens from 

 Rio Conchas, Chihuahua, Mex., shows the species pricei 

 not to be valid. The measurements for the Rio Con- 

 chas specimens are : Head 3^ to 3^; eye 4^2 to 5; scales 

 before dorsal 32 to 39; [32, 33, 36, 37, 37, 38, 39] ; origin 

 of dorsal and maxillary as given above; top of head 1% 

 in distance from occiput to dorsal, 1: in one specimen. 



The convolutions of the alimentary canal in these 

 specimens are quite different from those of Campostoma 

 anomalum. Instead of having the alimentary canal wound 

 around the air-bladder a number of times, it is folded 

 back and forth antero-posteriorly below and at the side 

 and makes only one fold on top, not going entirely around 

 it at all. The intestines were found to have the same 

 arrangement in a specimen of Campostoma ornatum from 

 Rio Conchas, Mexico. In one of our specimens, a female, 

 the alimentary canal was entirely below the air-bladder. 

 In a specimen ot Campostoma anomalum from Ross Lake, 



