CROCODILIANS, I.IZARDS, AND SNAKES. 



687 



black ground color is more persistent. The light stripes are most broken 

 up posteriorly, aud the communicating pale cross spots are widest and 

 most numerous. On the sides the pale spots are of irregular shapes, 

 being both longitudinal and transverse on a black ground. Belly black 

 and light olive in varying proportions. Gular region and collar with 

 transverse black spots or bands. Fore limbs black with light olive 

 spots; hind limbs brown with blackish reticulation. Tail brown above, 

 black-spotted below. 



I took a specimen which differs in no respect from this subspecies 

 on the road between Eeno and Pyramid Lake in western Nevada. The 

 only difference is in the coloration, since the black between the stripes 

 is comjiletely cut up into short transverse bars not wider than the light- 

 brown intersi)aces. 



MeasuremenU. — Total length, 275 mm.; length to meatus auditorius, 

 21 mm.; length to collar, 30 mm.; length to vent, 83 mm.; length of 

 fore limb, 32 mm.; length of bind limb, 65 mm.; length of hind foot, 

 35 mm. 



Cnemidophorns tessellatus miiltiscutatits Cope. 



CNEMIDOPHORUS TESSELLATUS VARIOLOSUS Cope. 



Cnemidophorns tessellatus variolosus Cope, Trans. Amer. Phil. Soc, 1892, p. 39, 

 pi. VIII, fig. 6. 



This species exhibits the general scale characters of the G. tessellatus, 

 but possesses some peculiarities. The interparietal plate is twice as large 

 as either parietal. Infralabials five. The scales of the brachium and 

 of the femur are smaller and more numerous than in the C. tessellatus. 

 There are six rows of the former, four being the usual number in the 

 latter species; and eight of the latter, six or seven being the usual 

 number. Brachial rows three; tibials three. Anal scuta with the 

 lateral scales rather larger than usual, giving four large and six small 

 ones in all. Femoral pores more numerous, twenty-five on each side. 

 This species is especially characterized by the length of the hind leg, 

 which reaches, when extended, to the postnasal plate, instead of to the 

 meatus auditorius only. The scales of the mesoi 'tychium extend all the 

 way across, and are not interrupted at the middle by the smaller ones 

 as in the C. t. perplexus. The marginal scales are smaller. Posterior 

 gular scales are smaller, bounded in front by the larger scales of the 

 anterior gular region. 



Measurements. — Total length, 250 mm.; of head and body to vent, 05 



