1922 Schmidt, Amphibians and Reptiles of Lower California (595 



The record of Van Denburgh and Slevin (loc. cit.) is only tentatively 

 referred to this form, as they do not describe its coloration. 



Chilomeniscus punctatissimus Van Denburgh and Slevin 



Chilomeniscus punctatissimus Van Denburgh and Slevin. 19216, p. 98. 



Range. — Espiritu Santo Island, Gulf of California, and Magdalena Island. 



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

 37521, from Magdalena Island, appears to be very closely allied to this 

 newly described form from the opposite side of the peninsula. It differs 

 from the type in having the scales of the light bands immaculate, in- 

 stead of spotted. The large number of crossbands, which is the same in 

 both specimens, seems to me a more important character than the 

 spotting. 



The specimen from Magdalena Island has the rostral broad and in 

 contact with the prefrontals posteriorly; nasals expanded on the upper 

 side of the snout, probably by fusion with the frontonasals; prefrontals 

 reaching the labials on each side; frontal broad, six-sided; supraoculars 

 small; a minute preocular on each side; two postoculars; temporals, 1-1 

 on each side; upper labials, 7, third and fourth entering the eye; lower 

 labials, 9, the first five in contact with the anterior chin shields; dorsal 

 scales, 15-13-13; ventral plates, 127; subcaudals, 25. 



Top of the head very dark brown, lighter on the snout, the lower 

 border of the labials light ; back crossed by 32 bands of dark brown about 

 equal to the light interspaces and reaching the first row of scales on each 

 side; 7 bands on the tail. 



The total length is 98 mm.; tail, 11 mm. 



Chilomeniscus cinctus Cope 



Chilomeniscus cinctus Cope, 1861, p. 303. 



Range. — The Colorado Desert, to middle Lower California on the west and 

 Sonora on the east. 



Lower Californian Records. — Ballenas Bay, Cope, 1900, p. 952. 



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

 37520, from San Quintin, is characterized by a pattern of dark rings, 

 completely encircling the body. 



Dorsal scale rows, 15-13-13, ventral plates, 120; subcaudals, 25; 

 the prefrontals meet the labials laterally; upper labials, 7-7; lower 

 labials, 9-9; preoculars, 1-1; postoculars, 2 2; rostral broadly in con- 

 tact with the prefrontals. 



There are twenty-two dark brown rings encircling the body, with 

 four more on the tail and a nuchal bar which does not reach the ventrals. 

 The dark rings are wider than the interspaces dorsally, narrower ven- 

 t rally, where they occupy quite regularly two ventral plates. 



