692 Bulletin American Museum of Natural History [Vol. XL VI 



Dorsal stripe less strongly contrasted with the ground color; belly uniform brown 

 or with a few yellow blotches L. California nitida. 



3. White scales white to their bases, forming rings of uniform white; white bars on 



prefrontals bread, convex behind; lower labials usually 9 . . L. getulus boylii. 



White scales mostly brown at their bases; white bars on prefrontals broad or 



narrow; lower labials 9 or 10 4. 



4. White bars on prefrontals occupying less than half the area of these scutes; 



frcntal plate uniform black, or with the white restricted to a narrow trans- 

 verse bar at its anterior end; no white on parietals; lower labials usually 9. 



L. getulus yumensis. 



White bars on prefrontals occupying more than half the area of these plates; 



frontal plate with prominent white markings; each parietal with one or 



more white spots; lower labials usually 10 L. getulus conjuncta. 



Rhinocheilus lecontei Baird and Girard 

 Rhinocheilus lecontei Baird and Girard, 1853, p. 120; Stejneger and Barbour, 



1917, p. 91. 



Range. — Idaho to Lower California, east to Texas. 



Lower Californian Records. — "At or to the south of Magdalena Bay," 

 Lockington, 1880, p. 295. 



A specimen in the Biological Survey collection, U. S. N. M. No. 

 37516, is from Ensenada. 



The scale characters of this specimen, a male, are as follows: Dorsal 

 scales, 23-23-19; ventral plates, 208; subcaudals, 49; preoculars, 1-1; 

 postoculars, 2-2; temporals, 2-4, 2-3, upper labials, 7-8; lower labials, 

 9-9. The total length is 625 mm., the tail-length, 83 mm. 



Hypsiglena ochrorhynchus ochrorhynchus Cope 



Hypsiglena ochrorhynchus Cope, 1860, p. 246. 



Hypsiglena ochrorhynchus ochrorhynchus Stejneger and Barbour, 1917, p. 93. 



Range. — Lower California, southern California, and adjacent parts of Arizona 

 and Sonora. 



Lower Californian Records. — Cape St. Lucas, Cope, 1860, p. 246; Magda- 

 lena Bay (or south), Lockington, 1880, p. 295; San Jose del Cabo, Sierra San Lazaro, 

 San Francisquito (Sierra Laguna), Van Denburgh, 1895, p. 144; Mulege, Mocquard, 

 1899, p. 325; Los Coronados Islands, Van Denburgh and Slevin, 1914, p. 141; Sierra 

 Laguna, Van Denburgh and Slevin, 1921a, p. 68. 



Two specimens in the Biological Survey collection come from Cape 

 San Lucas (U. S. N. M. No. 37528) and Santa Anita (37527). 



The scale characters and measurements of these specimens are as 

 follows: 



Number 



Dorsal Scales 



Ventral Plates 



Subcaudals 



Total Length 



Tail-length 



