582 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.49. 



Baird and Girard/ Tigoma intermedia Girard,^ and Gila nigra Cope.^ 

 It was found that they represent the same species. 



The type of G. gihhosa, No. 223, U.S.N.M., is from the Rio Santa 

 Cruz, a tributary of the Gila. The following measurements of the 

 specimen are recorded in hundredths of the length to base of 

 caudal fin. Length, 170 mm.; length head, 0.285; depth caudal 

 peduncle, 0.105; length caudal peduncle, 0.20; length snout, 0.08; 

 diameter eye, 0.055; interorbital width, 0.09; depth head, 0.19; 

 snout to occiput, 0.20; to dorsal, 0.58; to ventral, 0.54; length base of 

 dorsal, 0.18; base of anal, 0.09; height dorsal, 0.16; anal, 0.145; 

 length pectoral, 0.16; length ventral, 0.12; number dorsal rays, 8; 

 anal, 8; scales in lateral series, 74; between lateral line and middle of 

 back, 19; between occiput and dorsal fin, 36. 



One of the cotypes of T. intermedia, No. 232, U.S.N.M., has 76 

 scales in the lateral series, 20 above the lateral line, and 39 between 

 occiput and dorsal fin. There are about 8 small, short gillrakers. 



The cotypes of G. nigra, No. 16987, U.S.N.M., are from Ash Creek, 

 Arizona. Specimens from San Carlos are also recorded by Cope, but 

 they should not be regarded as cotypes * as the original description 

 is based on larger examples, "7i inches," those from San Carlos 

 being much smaller. 



Specimens from Olear Oieek al)oiit 20 miles above its confluence with the Verde 

 were examined about July 2. The back was dark olive green, the sides golden yel- 

 low; sides of head brassy yellow granulated with black; ventral region yellow; iris 

 yellow. Fins orange, the area around their bases vermilion. 



Santa Cruz River, Verde River near Fort Verde. 



A few fishes from Bear Creek, a tributary of Altar River, are pro- 

 visional identified as R. gihhosus. They appear lo difl^er in form 

 and scale characters from members of the genus taken in the Colorado 

 and in the Yaqui. Material for a careful comparison is not available, 

 however. 



RICHARDSONIUS PURPUREUS (Girard). 



This species has a robust body, large head, and very short snout. 

 The gillrakers are very short, scarcely evident in some specimens. 

 The scales in the lateral series number from 55 to 60; above lateral 

 line, 15 or 16; between lateral line and ventral, 8 or 9; between 

 occiput and dorsal, 34 to 36. Dorsal rays, 8; anal rays, 8. 



San Bernardino River. 



NOTROPIS MEARNSI, new species. 



Five specimens of a Notropis, which apparently belongs to an 

 unknown form, were collected m the Yaqui Basin. The species 



» Troc. Acad. Nat. Sci. Phila., 1854, p. 28; U. S. and Mex. Bound. Surv. Ichthyol., p. 64, pi. 33, figs. 1-4. 



» I'roc. Acad. Nat. Sci. Phila., 1856, p. 206. 



3 Wheeler's Explor. West of the 100th Merid., vol. 5, 1876, p. 663, pi. 30, flg. 3. 



♦ Bull. 47, U. S. Nat. Mas., p. 235, synonymy of L. niger. 



