684 13. COLUBRID 
The color above is dark brown, becoming black ante- 
riorly. The head is light brown, shaded with yellow. A 
narrow yellow streak runs from the eye to the snout. A 
spot on the temporal region, one on the postoculars, all of 
the labials, the chin, and the anterior part of the abdomen 
are bright golden yellow, unspotted, as are also the sides 
of the neck and the anterior fourth of the body up to the 
fifth row of scales. On the second and third rows of scales 
of the latter region is a broken black band interrupted at in- 
tervals of about seven scales. This black band where pres- 
ent forms the lower border of a yellow lateral stripe. It 
finally becomes continuous, and with a band upon the first 
row almost excludes the yellow ground color upon the mid- 
dle and posterior parts of the body. The tendency of this 
coloration is to produce two series of alternating yellow and 
black spots along the anterior part of the sides. The belly 
is dirty yellowish, unspotted. 
Mength toy anus. see ee eee 697 
Denethtotytail 222 ee 348 
Distribution—Only two specimens of this snake have 
been collected. One was secured by John Xantus, at Cape 
San Lucas, the other by Gustav Eisen, at San José del Cabo, 
Lower California, Mexico. 
Remarks.—This racer is closely related to C. lateralis 
and resembles it in coloration, but has the lateral stripe 
broken anteriorly. 
