XIXTH AX X UAL REPORT. 



201 



i ^ 



CROTALUS lACIFKR 



pale borders to be observed in typical specimens. Above, tbe 

 head is curiously and profusely blotched with black, which suf- 

 fuses and obliterates traces of the usual parallel lines on the sni)ra- 

 orbital plates. 



The general effect of the pale greenish body with jet l)lack 

 patches is very striking and handsome. 



Dimensions. — Total length. 34 inches ; diameter thickest part 

 of body, 1 34 inches. 



From the character of the rattle, which possesses four segments, 

 all of which are of uniform size, the snake appears to be mature. 



Locality. — The specimen was taken on a ledge, at an elevation 

 of 8,000 feet, in the Beaver Range of Mountains in I'tah. by 

 George P. Englehardt. while collecting for the I'.rooklyn Museum 

 of Arts and Sciences. Mr. Englehardt e.xjilains that at a lower 

 altitude he found snakes of the typical form. V\^ou higher 

 ledges, very difficult of access, he observed several specimens 

 which resembled the one described, but they escaped among the 

 rocks. 



