HERPETOLOGY OF JAPAN, 249 



Thanks to the kindness of Mr. Witmer Stone, curator of the Phila- 

 delphia Academy Museum, I have been enabled to examine two speci- 

 mens recorded by him from eastern Mongolia. One of them is a 

 typical K. argus in every respect. The other has only a very small, 

 single median fronto-nasal and a })air of very long prefrontals. It 

 consequently approaches E. arguta, though a close inspection seems 

 to show that the prefrontals have become so long by fusion with a 

 pair of fronto-nasals, the shield which now appears in that role being 

 probably only the ordinary azygous interprefrontal pushed forward 

 so as to touch the supranasals. In these specimens the light centers 

 of the outer rows of ocelli are nearly confluent, so as to form longi- 

 tudinal light lines. 



Description. — Adult female; U.S.N.M. No. 21182; Seoul, Korea; 

 June, 1883; P. L. Jouy, collector (figs. 217-219). Rostral pentag- 

 onal, in contact with first supralabials and supranasals; nostril a 

 round hole between three bulging nasals, of w^hich the supranasals are 

 more than twice as large as the other two together and broadly in 



218 



Figs. 217-219.— Eremias argus. 2xnat. size. 217, top of head; 218, side of head; 219, femoral 

 roRES and anal region. No. 21182, U.S.N.M. 



contact behind the rostral; postnasal small, in contact with inter- 

 parietal and first loreal; subnasal long and narrow, in contact with 

 first and second labials, first loreal, and the two other nasals; a pair 

 of internasals behind the supranasals and smaller than the latter; a 

 pair of pentagonal prefrontals separated by a small median azygous 

 spear-shaped prefrontal, the former in contact externall}' b}^ second 

 loreal and first superciliary; frontal long, slightly longer than its 

 distance from rostral, twice as wide anteriorly as posteriorly, in con- 

 tact posteriorly with the first supraocular; three supraoculars, the 

 first two large, the third very small, separated from the superciliaries, 

 the first by a single row and the second by a double row of granules; 

 the space in front of first supraocular, between that, frontal, pre- 

 frontal, and first superciliary filled with granules, the row nearest 

 frontal and prefrontals being somewhat larger than the others; five 

 superciliaries, the first longest and in contact with prefrontal ; fronto- 

 parietals larger than second supraoculars, almost as long as parietals, 



