64 Journal of Entomology and Zoology 



I'ma nolala (Baird). 



Only one specimen of this beautiful lizard is found in the itiuseum, and i( was 

 taken in the sand hills 15 miles east of Blythe Junction, April 2, 1920. The lizard 

 is very shy, running rapidly to the shelter of a burrow in the sand, at the least threat 

 of danger. (This seems to be between I', nolala and U. scoparia.) 



Calhaurus I'fntralis ventralis (HallowelU. 



This lizard appears to be one of the most numerous and widely distributed of 

 the Colorado and Mojave deserts, having been found in almost every type of country 

 with the exception of the rocky hills and mountains, from Victorville to Needles and 

 south to the Mexican Border in Imperial Valley. In the Providence Mountains they 

 were found at an altitude of over a thousand feet. 



In the Imperial Valley they were found to burrow, or push down into the sand 

 at the approach of night. Here they remained until sunrise of the next day. At the 

 approach of danger they jump from the sand with such suddenness as to give the 

 impression of a small explosion. 



The distribution as given above is not intended as a limit to their range but 

 merely a note on their presence in those places. 



Crolaphylus coUaris hailfyi (Stejneger). 



This lizard is represented by three specimens in the college collection. One taken 

 from near the Bonanza King Mine, Providence Mountains, March 31, 1920; another 

 from the N. E. spur of the Turtle Mountains, and a second and smaller one from 

 the same place, April 1, 1920. 



These lizards were found on the rocky hill-sides and were very active and rather 

 shy. Their strong jaws and great speed fit them for the predaceous life which they 

 lead. In the largest specimen was found an eight inch CncmiJoplionis tigris ligris, 

 partially digested. 



Crolaphylus v:izlizrnii (Baird and Girard). 



Two specimens were taken at the grass fields between Blythe and Mecca, on 

 April 2, 1920. 



These specimens were found skulking under the branches of the creosote bushes. 

 They are very rapid runners, and are predaceous. Their coloring blends admirably 

 into the mottled shade where they lie in wait for their prey. A ten-inch Cnemidophorus 

 ligris tigris was taken from an eleven inch specimen. Their biting ability was well 

 proved upon the collector who picked up one of the specimens which had been only 

 wounded. One bite tore through the skin of the first finger, causing a decided flow 

 of blood. 



Sauromatits aUr (Pumeril). 



One specimen taken in the lava rocks east of Ludlow, March 30, 1920. Two 

 specimens taken among the rocks in the N. E. spur of the Turtle Mountains. 



These lizards, which are not fast runners, are usually found near some crevice 

 in the rocks in which they take refuge upon the approach of danger. 



The two specimens taken in the Turtle Mountains, April 1, 1920, were found as 

 a pair, and when first seen appeared to be in copula. This gives some suggestion as 

 to the lime of breeding. 



