48. CROTALUS 959 



27 rows, all keeled except the first two or three rows. Gas- 

 trosteges varying in number from 145 to 160. Anal not 

 divided. Urosteges 21 to 28, a few of the anterior and post- 

 erior sometimes divided. 



The coloration of the original specimen was described by 

 Dr. Meek as follows: 



Color light olive brown, more or less irregularly blotch- 

 ed with white J dorsal region crossed by 19 lighter bands, 

 each one scale length in width and narrowly margined with 

 black J dorsal transverse bars about nine scale lengths apart} 

 no transverse bands on tailj ventral surface much speckled 

 and mottled with black, becoming darker posteriorly j small 

 black dots on sides, these most numerous near ventral region ; 

 supraocular light ash color} a large ashy blotch on occiput 

 more or less reticulated posteriorly with darker} snout and 

 region between supraoculars olive brown} a distinct white 

 line one scale wide from upper edge of prenasal above pit 

 to upper edge of seventh supralabial, passing obliquely down- 

 ward to tenth supralabial and backward covering the last 

 four supralabials} a white line on lower half of first five 

 supralabials, passing downward and backward on lower jaw 

 to white on throat} the space between these bands brown} 

 rostral with white median line. 



The second known specimen, as described by Mr. Hart- 

 man, was in "general color chocolate, dorsally marked with 

 short cross-bars of dark shading into a black line posteriorly 

 or anteriorly, these bars sometimes occurring in pairs and 

 then separated by one or two scales' width of ground color} 

 tail with three distinct brown half rings on anterior part, 

 remainder uniform brown dorsally} brown spots covering 

 parts or all of from one to four scales laterally} whole body 

 more or less speckled with black or brown} lateral scales 

 covered with fine specks } ventrals of anterior portion almost 

 white, posteriorly becoming slightly speckled with dark, the 



