488 FISHERIES OF THE UNITED STATES. H^ 2 ] 



Subgenus Siboma Girard. 

 14«5. Squall *i§ gibnosiis (Ayres) Jor. & Gilb. Mullet; Chub. 



Siboma cmssicauda Girard. Proc. Acad. Nat. Sci., Phila., 185G, p. 208, 

 and Pac. R. R. Surv., Fish, p. 296. 

 : Lavinia gibbosa Ayres, Daily Placer Times & Transcript, CaL, May 

 30, 1854. 



Rivers of California. 

 The speeies reaches 12 inches in length. 

 6729. San Joaquiu, California. A. L. Heermann. 



Subgenus Squalius Bonap. 



140. Squalius afB"JiFifii§ (Girard) Jor. & Gilb. Utah Mullet* 

 Chub of Utah Lake. 



Siboma atraria Girard, Proc. Acad. Nat. Sci., Phila., 1856, p. 208, and 

 Pac. E. R. Surv., x, p. 297. 



Utah Basin. 



This species reaches a length of 20 inches ; it is used 

 as food and is very destructive to young trout. 



15995. Denver, Colorado. H. W. Henshaw. 



Subgenus Cheonda Girard. 



147. Squalius raigresceiis (Grd.) Jor. & Gilb. 



Tigoma nigrescens Girard, Proc. Acad. Nat. Sci., Phila., 1856, p. 207, and 

 U. S. & Mex. Bound. Surv., Ichth., p. 64. 



Boca Grande and Janos Rivers. 



220. (R.).Boca Grande. Dr. C. B. Kennerly. 



Genus PHOXINUS Agassiz. 



148. Phoxinus phlegetlioiatis (Cope) Jor. & Gilb. 



Clinostomvs phlegclhortis Cope, Proc. Amer. Phil. Soc, Phila., 1874, 



p. 137. 

 Gila plilegethantis Cope, Zool. Wheeler's Expl. W. 100th Mer., v, p. 657. 



Beaver River and Utah Lake. 



30804. Utah Lake, Utah. Peter Madsen. 



Genus MYLOLEUCUS Cope. 



149. Myloleucus formosus (Girard) Jordan. 



Algansca formosa Girard, Proc. Acad. Nat. Sci., Phila., 1856, p. 183. 

 Algansca bicolor Girard, Proc. Acad. Nat. Sci., Phila., 1856, p. 183 (fide 

 Jordan & Gilbert). 



Rivers of California. 



197. (R.) (One of the type specimens.) Mohave River. Heermann. 



