198 BULLETIN 18 7, UNITED STATES NATIONAL MUSEUM 



Crotalus helleri Meek, Publ. Field Mns. Nat. Hist., zool. ser.. vol 7, 1905, pp. 17- 

 18, pi. 2 (type locality, San Jose, Baja California; type. Field Mus. Nat. 

 Hist. No. 1272). 



Type.— Acud. Nat. Sci. Phila. No. 7158. 



Type locality.— ^'The banks of the Oregon or Columbia Elvers," 

 probably between Walla Walla, Wash., and the Pacific Ocean. 



Range. — "The Pacific slope from British Columbia to central Baja 

 California including the following: the basins of the Fraser and 

 Okanogan Rivers in south-central British Columbia, south of Lat. 51° 

 and between Long. 119° and 122°; Washington east of the Cascade 

 Mountains; the western edge of Idaho from Coeur d'Alene south to 

 Lat. 44° ; Oregon west of the line Upper Klamath Lake-Fort Rock- 

 Burns-Council (this being the approximate line of intergradation 

 with lutosus) but absent from northwestern Oregon west of the 

 Cascades and from southwestern Oregon immediately contiguous to 

 the coast; all of California west of the Sierra Nevada (including these 

 mountains), but excluding a narrow coastal fringe in the extreme 

 northwest and the entire desert (transmontane) areas of the south- 

 east; the west coast and mountains of Baja California from the 

 U. S. border south to Punta Maria (Lat. 29°) ; . . . The Pacific 

 Coast islands — Morro Rock, Santa Catalina, and Los Coronados. . . . 

 The central plateau of Arizona and adjacent areas: from the line 

 Peach Springs-San Francisco Peak-Springerville south to the desert 

 areas of the southwest; the mountains of extreme west-central New 

 Mexico (Steeple Rock) and extreme northern Sonora" (in mainland 

 Mexico recorded only from Rio San Pedro and doubtfully from 20 

 miles southeast of Sasabe [Arizona], Sonora). 



CROTALUS WILLARDI Meek 



Crotalus willardi Meek, Publ. Field Mus. Nat. Hist., zool. ser., vol. 7, 1905, pp. 

 18-19, pi. 3.— SwAETH, Copeia, 1921, p. 83.— Gloyd, Spec. Publ. Chicago Acad. 

 Sci., No. 4, 1940, pp. 234-236, map 21, pi. 30, fig. 2. 



Type.— F'l^ldi Mus. Nat. Hist. No. 902. 



Type locality. — '"Tombstone, Arizona', probably Ramsey Canon, 

 Huachuca Mountains, fide Swarth ..." 



Range. — "High elevations from the Santa Rita and Huachuca 

 Mountains, Arizona, through the Sierra Tarahumari and Sierra Madre 

 of eastern Sonora, western Chihuahua, Durango, and western 

 Zacatecas." 



Genus SISTRURUS Garpan 



Sistrurus Gakman, Mem. Mus. Comp. Zool., vol. 8, 1883, pp. xxvii, 110, 118, 176. — 

 Gloyd, Spec. Publ. Chicago Acad. Sci., No. 4, 1940, pp. 81-79, maps 1-5, fig. 6 

 (generic revision). 



Genotype. — Crotalus miliarivs Linnaeus. 



