426 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 48. 



CHIONACTIS ISOZONUS (Cope). 



Locality. — A single specimen of this beautiful little snake was 

 presented to the Stanford University collection by E. J. Newcomer. 

 It was found beneath a rock on a rise above the southwest shore of 

 Pyramid Lake, Nevada, about the 1st of June, 1911. This is, to 

 my knowledge, the first definite record for Nevada, although Yarrow 

 (1875, p. 537) cites two specimens without precise locality, which 

 were procured in the State in 1871. The capture of Cidonactis 

 isozonus at Pyramid Lake, Nevada, therefore establishes a new 

 northern station considerably beyond any previous one. 



Description. — Cephalic plates normal; anterior and posterior nasals 

 united; 1 loreal; 1 preocular, 2 postoculars; temporals 1 followed by 

 2; supralabials 7, third and fourth in contact with the eye; infrala- 

 bials 7, the fourth the largest; post geneials less than one- third the 

 length of the anterior geneials. Dorsal scales smooth, in 15 rows. 

 Anal plate divided. Ventrals, 164. Caudals, 49. Total length, 215 

 mm. ; tail length, 44 mm. 



The following color notes pertain to the specimen several days 

 after it had been placed in formalin: Head, dorsally, dark brown with 

 a pink suffusion, darkest on the parietal and posterior part of the 

 frontoparietal and supraocular plates. Dorsal part of body with 27 

 transverse bands of a leaden blue color, 3 or 4 scales wide, which do 

 not appear on the ventral surface, but gradually fade out on the sides. 

 Tail with 9 bands of the same color which form almost complete 

 annuli, paler ventrally. Spaces between the dorsal bands dull rose 

 pink, 3 scales wide. Ventral surface light olive green, a peculiar 

 shade difficult to describe. 



CHARINA BOTTAE (Blainville). 



Locality. — This interesting little boa was not seen by us in this 

 region but there is a specimen in the Stanford University collection 

 from the vicinity of Fallen Leaf Lake, Eldorado County, California, 

 collected by C. Y. Burke. CJiarina oottae has been recorded from the 

 Lahontan Basin at Eagle Lake, Lassen County, California, and at 

 the " Great Bend of the Truckee River (Wadsworth) and the Hum- 

 boldt River, Nevada." 



Description. — Internasals 2; prefrontals 5; 1 large frontal; 1 large 

 parietal plate, smaller than frontal, with 6 smaller plates touching 

 its posterior and posterolateral edge; preoculars 1-1 ; postoculars 4-4; 

 supraoculars 1-1 ; suboculars 0-1 ; labials in contact with eye 1-1 ; 

 loreals 1-1; scale rows 45 (maximum number); ventrals 205; sub- 

 caudals, 38. Color (from preserved specimens), olive-brown, dor- 

 sally; pale lemon yellow ventrally. 



