468 GEOLOGICAL SURVEY OF THE TERRITOEIES. 



EUT^NIA PAEIETALIS, Say. 



Salt Lake City ; lake ten miles east of Logan, Utahj (salt ;) Fish 

 Creek, Montana. 



PiTYOPHis BELLONA, B. and G. 



One specimen without the anterior frontal (vertical) shield j from Og- 

 den, Utah. 



Bascaniibi flaviventrts. Say, (B. and G., Catalogue, p. 96.) 



Ogden, Utah. 



Lacertilia. 



PHRYNOSOMA DOUGLASSIl, Bell. 



Ya)\ a. — The usual form ; Salt Lake City. 



Var. /?, exilis. — A small form not more than one-half or two-thirds the 

 usual size, but nearly identical in details of structure and coloration. 



The differences observable are: the rather shorter muzzle, which is 

 entirely vertical in i>rolile ; the smaller scale above the canthus of the 

 mouth, and the temporal horns; the less prominence of the posterior 

 superciliary angle, and the much reduced size. A geographical variety. 

 Carrington's Lake, Montana ; Fort Hall, Idaho. 



SCELOPORUS CONSOBRINUS, B. and G. 



This species is very abundant and variable. Its varieties are four, 

 as follo\^ s : 



Var. 1. — Typical ; scales large, especially on the sides ; crural cross- 

 series, 10-11 ; rows between interscapular and crural points, 33 ; 2 i^re- 

 frontals on each side; lateral and dorsal si^ots distinct. Localities, Yel- 

 lowstone Basin ; Blackfoot Fork. 



Var. 2. — Like the last, but the scales smaller on sides and back ; 13 

 rows on rump. Salt Lake City, Utah ; south of Fort Ilall, Idaho. 



Var. 3. — Scales still smaller; 16-17 interscapuhir, 11 crural cross- 

 rows ; 3 prefrontal plates on each side. Dorsal spots large, their bor- 

 ders touching the lateral spots; both pale-edged behind, forming an 

 angular border in 9 . Tliis form grades into the last. A male has the 

 border color of variety 2. South of Fort Hall, Idaho. 



Var. 4. — Like variety 2, but only half the size. South of Fort Hall, 

 Idaho, and Salt Lake City. 



SCELOPORUS GRACiosus, B. and G.; S. gracilis, B. and G. 



This species is very near the last, but the scales are still smaller. 

 There are 38 transverse dorsal rows and 20 interscapular. The lateral 

 scales are twice emarginate. From Salt Lake, L tali, to Oregon. 



Cnemedophorus tessellatus, Baird ; Amiva tessellata, Say, {vide 

 Pac. K. 11. Surv., vol. X, Beckwith's Beport.) 

 Salt Lake, Utah. 



Testudinata. 



CHRYSE:\rYS OREGONENSis, Harlan ; Agass. 

 The Yellowstone Lake. 



BATEACHIA. 



Anura. 



BuEO C0Lu:viBiENSis, B. and G., (United States Exploring Expedition, 

 Herpetology, by Girard, p. 77.) 



Pleasant Valley and Yellowstone Basin. Specimen from latter local- 



