432 PROCEEDINGS OF THE ACADEMY OF [June, 



This interesting form is closely related to Cyprinodon bovinus, 

 apparently differing in the absence of a distinct black pale-edged 

 ocellus on upper hind portion of dorsal. 



Also an example from the staked plains between the Brazos River 

 and Tulip, Red River, Texas. 1892. E. D. Cope. 



Two from the Red River basin south of Clarenden, Texas. E. D. 

 Cope. 



(Named for the Red River, of the most northern inland eastern 

 region at which a member of the genus Cyprinodon has been found.) 



Cyprinodon macularius Baird and Girard. 



Pror. Acad. Nat. Sci. Phila., 1853, p. 389. Rio San Pedro, Arizona. 

 Cyprinodon californiensis Girard, Proc. Acad. Nat. Sci. Phila., 1859, p. 158. 

 San Diego County, California. 



No. 7,219, A. N. S. P., cotype of C. macularius Baird and Girard. 

 Rio San Pedro, Arizona. J. H. Clark. Smithsonian Institution 

 (No. 992). 



No. 7,220, A. N. S. P., cotype of C. californiensis Girard. San 

 Diego County, California. Smithsonian Institution (No. 311). 



Also an example from Salt River, in the Gila Basin, at Tempe 

 (Dr. H. A. Pilsbry), Arizona. 



Cyprinodon elegans Baird and Girard. 



Proc. Acad. Nat. Sci. Phila., 1853, p. 389. Camanche Spring, Texas. 



No. 7,222, A. N. S. P., cotype of C. elegans Baird and Girard, 

 Camanche Spring, Texas. J. H. Clark. Smithsonian Institution 



(No. 686). 



Cyprinodon mydrus Goode and Bean. 



Large series from the Florida Keys, which I collected in 1904. 



Lebias fasciatUS Valenciennes. 



Mediterranean (Bonaparte No. 313). Dr. T. B. Wilson. 



GOODEIN.E. 

 Goodea atripinnis Jordan. 



Lake Patscuaro, Mexico (Mexican expedition 1890). 



Characodon variatus T. H. Bean. 



Rio Verde at Rascon, San Luis Potosi, Mexico. 



PCECILIIN^. 

 Gambusia affinis (Baird and Girard). 



Heterandria affinis Baird and Girard, Proc. Acad. Nat. Sci. Phila., 1854, 



p. 390. Rio Medina and Rio Salado, Texas. 

 G. holbrooki Girard, Proc. Acad. Nat. Sci. Phila., 1859, p. 61. Palatka, Florida. 

 <j. gracilis Girard, I.e., p. 121. Matamoras, Mexico. 

 Haplochilus melanops Cope, Proc. Amer. Philos. Soc. Phila., XI, 1870, 



p. 457. Neuse River, North Carolina. 

 Zygonectes brachypterus Cope, Bull. U. S. Nat. Mus., XX, 1880, p. 34. 



Trinity River, Fort Worth, Texas. 



