Occasional Papers of the MuseuDi of Zoology 19 



contained large eggs while those taken on July 8 had none, 

 which would indicate that they were laid about this time. On 

 August 14 the young were seen for the first time. On this 

 date four individuals between 22-24 mm. in body length were 

 found on the ground between the large rocks in INIoleen Can- 

 yon. They were very agile and when alamied quickly sought 

 shelter under loose stones. 



Sceloponis biseriatus Hallowell. 

 (pi.. V, FIG. I.) 



One hundred and twenty-nine specimens taken on the east- 

 ern slope of the Cortez Range from the Humboldt Valley to 

 Maggie Canyon, in the Seetoya Range east of the canyon, in 

 the River Range from Moleen Canyon northward for several 

 miles, and on the low rocky hills between Susan and Maggie 

 Creeks. 



Our material is not relatively very variable. In no speci- 

 men is there more than one gular spot, the females all have 

 bluish abdominal spots, and the posterior side of the thighs 

 (particularly along the femoral pores) and the posterior side 

 of the forelimbs are nearly always bright orange yellow. 

 With age the dorsal spots, generally very distinct in the young, 

 tend to become less distinct, and in very old specimens may 

 be quite obscure, but they are generally discernible even in 

 the old individuals. The white of the ventral parts is nearly 

 always more or less spotted or suffused with black in the males 

 and with grayish slate in the females, but the extent of macu- 

 lation is very variable and not plainly influenced by age. The 

 abdominal spots vary from a deep greenish blue to a 

 pale bluish in the males ; in the females they are generally 

 bluish slate but occasionally nearly as in the males. The 

 femoral pores vary from 13 to 19, with an average of 16.8 in 

 no specimens. 



