658 



REPORT OF NATIONAL MUSEUM, 18tt8 



as to produce the effect of a succession of uarrow light crescents, the 

 concavity posterior. The lower white line is usually margined nar- 

 rowly below by blackish. 



It is probable that in the very young the adjacent edges of the two 

 central and the third and fourth lateral upper rows of scales form whit- 

 ish lines alternating with the dusky ones. They, however, fade out. 

 The two central dusky stripes are not pure black as is that margining 

 the upper lateral stripe above, and soon fade, but there is generally a 

 trace left along the adjacent edges of the first and second rows in each 

 side. The scales below the lateral stripes have rather paler edges. 

 The lateral strij)es extend some distance on the tail. 



A comparison is scarcely needed between this species and the 

 U. quinqnelineatus, one having a postnasal, the other none, with other 

 differences in the head and many in general proportions. The upper 

 lateral stripe is on the middle of one row, not on adjacent edges of two; 

 the lateral stripes are closer together; the lower passing above the ear 

 instead of through it. 



This is another species of the plains of the Central region, and 

 it ranges farther north than any species of the genus, that is, to the 

 northern part of Minnesota. 



Cat. No. 11840 from Old Fort Cobb presents a remarkable exception 

 to the normal character, in having the frontonasal extended laterally so 

 as to reach the loreal on both sides. This specimen is otherwise normal. 

 In Cat. Xo. 15685 the internasal is similarly extended to the loreal, but 

 the contact on one side is very slight. The color is peculiar, being 

 olivaceous, with a brown band on each side which covers one and two 

 half rows of scales, and has a pale border above throughout as far for- 

 ward as the supraorbital plates. It is pale bordered below from the 

 auricular meatus to near the middle of the side. 



A large adult (Cat. No. 11699) is uniform dark brown above, and 

 yellowish brown below. 



The two specimens, Cat. No. 5325, differ from the types in the rela- 

 tively longer legs. They are, when extended on the side, only sepa- 

 rated by a space equal to the length of the forefoot. In the typical form 

 the space is equal to the length of the forearm and forefoot together. 



Eumeces septenti-ionalis Jlaird. 



Locality. 



Fort Ripley, Minnesota. . 

 Red River of the North . 



Sand Hills, Nebraska 



(?) 



Neosho Falls, Kansas ... 

 Fort Kearney, Nebraska. 



(?) 



Old Fort Cobb 



(?) 



From whom received. 



Governor Stevens 



R. Kennicott 



General Warren . . 



B. F. Goss. 



(?) 



E. Palmer 

 (?) 



Nature of specimen. 



Alcoholic, 

 do. 

 do. 

 do. 

 do. 

 do. 



