200 



NORTH AMERICAN FAUNA. 



[No. 7. 



among the junipers on the west slope of the Juniper Mountains, to an 

 altitude of 1,980 meters (6,500 feet). In Utah it is common in the Lower 

 Santa Clara Valley, and thence ranges northward to the Upper Santa 

 Clara Crossing, hut disappears before reaching Mountain Meadows. 



The food of Gnemidophorus tigris consists of grasshoppers and other 

 insects — no leaves or flowers were found in the numerous stomachs 

 examined. — C. H. M.] 



List of specimens of Cnemidopliorus tigris. 



U.S. 

 Nat. 



Mus. 

 No. 



18462 

 18463 

 18464 

 18465 

 18466 

 18467 

 18468 

 18469 

 18470 

 18471 

 18472 

 18473 

 18474 

 18475 

 18476 



18477 



18478 

 18479 

 18480 

 18481 

 18482 

 18483 

 18484 

 18485 

 18486 

 18487 

 18488 

 18489 

 18490 



18491 

 18492 



18493 

 18494 



Sex and 

 age. 



ad. 



d 



d 

 ad. 

 ad. 

 ad. 

 adol. 



d 



9 



d 



d 



9 



d juv. 



d 

 d 



ad. 



d 



ad. 



ad. 

 jnv. 



ad. 

 jun. 



ad. 



ad. 



ad. 



ad. 



ad. 

 jun. 



d 



9 



9 



9 

 ad. 



Locality. 



Alti- 

 tude. 



Feet. 



4,600 



Santa Clara Valley, IT tali 



Pahrump Valley, 'Nev 



do 



Pahranagat Valley, Nev - - - 



do I 



Oasis Valley, Nev I 4, 600 



Callville, Nev I 



Coso Mountains, Coso, Calif I 



do 



Argus Range, Shepherd Canon, Calif. 



do 



do . I 



do i 



Argus Range, Coso Valley, Calif ' 



Argus Range, Searl's Garden, Calif. . j . . .. 



Panamint Mountains, Willow Creek, 



Calif. 

 Panamint Valley, Hot Springs, Calif 



Lone Pine, Calif ' 



do I 



Death Valley, Calif I 



Death Valley, Furnace Creek, Calif. . ' 



do....:. . i 



do I 



Death Valley Bennett Wells, Calif. .J 

 do I 



do .'...J 



do ! 



do ! 



Mohave Desert, Leach Pt. Valley, 

 Calif. 



do _. 



Owens Lake, mouth of canon 5 miles 

 southwest of Olancha, Calif. 



Owens Lake, Olancha, Calif 



Deep Spring Valley, Calif 



4,000 



3,700 

 5,300 



Date. 



May 11 



Apr. 28 



Apr. 29 



May 25 



May 25 



June 2 



May 4 



May 18 



May 20 



Apr. 27 



Apr. 28 



Apr. 28 



Apr. 28 



May 11 



Apr. 24 



May 18 



Apr. 22 

 June 11 

 June 6 

 Mch. 22 

 June 20 

 Jan. 29 

 Apr. 10 

 Apr. 1 

 ...do... 

 Apr. 4 

 ...do... 

 Jan. 22 

 Apr. 25 



..do ... 

 June 8 



May 19 

 June 9 



Collector. 



Merriam. 



..do 



Bailey 



Merriam. 

 Bailev . . . 



..do 



..do 



Pi slier... 



..do 



..do 



..do 



..do 



..do 



..do 



Stephens 



Nelson... 



Merriam . 

 Pisher . . . 

 Palmer . . 

 Nelion. . . 

 Pisher... 



..do 



Merriam. 

 Bailey . . . 

 ...do:.... 



...do 



...do 



...do 



Merriam . 



...do , 



Stephens 



...do 



Merriam . 



Remarks. 



Cnemidophorus tigris undulatus (Hallow). 



Ten specimens from the west slope of the Sierra Nevada differ so 

 much from the desert specimens that I must regard them as entitled 

 to a separate trinominal appellation. So far as I can see there is no 

 structural difference, nor is there a very radical difference in the color 

 or the jiattern. The latter is considerably coarser, better defined, and 

 deeper in color. The difference between the two forms in this respect 

 is particularly well marked on the sides of the head, the dark marks 

 being nearly obsolete in the desert form, while in the latter the slate- 

 colored suffusion on the under side seems to be the rule. I have yet 

 to see a specimen from the great interior valley of California in which 

 it is present. 



