596 REPORT OF NATIONAL MUSEUM, 1898. 



The head is dusky browu; the upper jaw bluish white; the lower 

 nearly of a silver-white color. Along the back extends, from the occi- 

 put to the tail, a i)urple or brownish band, on each side of which are 

 three yellow or golden longitudinal lines; of these, the superior is the 

 palest and shortest; it begins at the parietal plate and terminates at 

 the tail; the other lines are much longer and brighter, the upper one 

 beginning above the orbit and extending to the middle of the tail; the 

 lower line begins below the eye and runs above the tympanum, along 

 the tlauks to the anterior part of the thigh ; a shorter and more indis- 

 tinct line extends from the angle of the mouth, below the tympanum, 

 to the shoulder; the spaces between these longitudinal bands are jet- 

 black. The throat is silver-white, and the abdomen of a shining bluish- 

 white color. The upper surface of the tail is nearly similar in color to 

 the back, but appears much rougher from the verticillated scales; its 

 inferior surface is whitish. There are two longitudinal lines ou each 

 side of the tail; the superior one is continuous with the central yellow 

 longitudinal line of the back, and terminates about the middle of the 

 tail; the inferior line is paler, it begins back of the thigh, runs nearly 

 to the extremity of the tail, and seems to divide the upper or darker 

 portion from the inferior or whiter part. 



The anterior as well as the posterior extremities are brownish above 

 and bluish-white below, and along the posterior part of the thigh runs 

 a whitish line continuous with the inferior longitudinal line of the tail, 

 bordered by darker above and below. 



Measurements. — A specimen from Piney Point, Marj'^land (Cat. I^o. 

 925G). Total length, 235 mm.; length to angle of mandible, 18 mm.; 

 length to collar, 21 mm. ; length to axilla, 27 mm. ; length to vent, 70 mm. ; 

 length of forelimb, 21 mm.; length of forefoot, mm.: length of hind 

 leg, 50 mm.; length of hind foot, 28 mm; width of head at front of 

 tympana, 10 mm. 



This is one of the smallest species, and it retains the young type of 

 coloration everywhere. It is also distinguished by its short and high 

 muzzle and the absence of postautebrachial scales. It covers the 

 Austroriparian region of the Nearctic realm and the Eastern as far as 

 the range of the Carolinian district, extending to Maryland and Dela- 

 ware, but not Xew Jersey. In the Central region it reaches north to 

 the Sand Hills of the Loup Fork Eiver of Nebraska. The only diffi- 

 culty in defining it is found in specimens from the region which is also 

 inhabited by the C. gularis. In Texas, New ]Mexico, and Arizona the 

 species merge into each other. If we refer s[)ecimens with fewer than 

 eighteen femoral pores and no spots between the stripes or on the sides 

 to the C. sexUneaius, we find that in certain specimens from the region 

 in question the postautebrachial scales are larger than in eastern 

 specimens, though not so large as in the true C. [/ularis. iSuch are 

 Cat. Xos. 4800,8159, 118;3!», and 14787. In another series the postaute- 

 brachial scales are equally intermediate in size and there are no spots, 



