574 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



VOL. 49. 



to the Yaqui through a channel connection. At least two Colorado 

 forms have succeeded in reaching the larger streams of southern 

 California, where they are now represented by Notolepidomyzon santor- 

 anse and Richardsonius orcutti. 



One species, Notropis meamsi is described as new. 



Quotations are made from the field notes of Doctor Mearns. 



CATOSTOMUS INSIGNIS Baird and Girard. 



The species described by Kirsch ^ as Catostomus gila is synonjnnous 

 with C. insignis, no differences appearing when the types of both are 

 compared. On carefully reading Kirsch's paper it appears probable 

 that his collection included three specimens of C. insignis, which he 

 described as O. gila, and two examples of Notolepidomyzon clarki with 



scales on the sides of moderate size, larger anteriorly than posteriorly * * *; the 

 anterior scales are of circular outline * * * those of the back vary large. 



One of the latter he lists as C. vnsignis, and the other as C. clarki. 



There are four cotypes of G. insignis in the United States National 

 Museum. They have from 54 to 58 scales in the lateral series, 11 or 

 12 between the lateral line and middle of back, 9 or 10 between the 

 lateral Une and base of ventral, 26 to 30 between occiput and dorsal 

 fin. There are 11 or 12 dorsal rays. In a cotype of C. gila the scales 

 are as follows: 56, 12, 11, 30. 



The following notes on the scales are taken from specimens collected 

 by Doctor Meams: 



Scales in lateral series 54 



Number of specimens 1 



Scales above lateral line 11 



Number of specimens 1 



Scales below lateral Une 10 



Number of specimens 10 



Scales before dorsal 26 



Number of specimens 3 



> Proc. U. S. Nat. Mus., vol. 11, 1888, p. 555. 



