:]5(J IJILLETIN ;il, KNITKl) STATKS NATIONAL MUSKIJM. 



sparsely pustulated. Form of craniuiu variable; width at jaws from 

 three and onel'ourth to two and two-thirds times in length of head and 

 body; froni posterior nuirgin of orbit to niu//le three and one-half to 

 nearly four times in same. Olive or ash green above, plain or marked 

 on each side, with blotches in two longitudinal series or stripes of darker 

 and scattered smaller ones on each side of these. Frcipiently a trian- 

 gular blotch between the eyes. A narrow dark line from snout to eye; 

 a broad postocular vitta to the arm, beneath which is a bar of grayish- 

 whito about half the wiilth. Tibia half to two-fifths the length of the 

 body; hind loot and arm f' m ell»ow scarcely shorter. 



This species, like the ; ickcringii and II. curta^ is annectant to Clio- 

 rophilus, whose species it represents, as well as its own genus, on the 

 Pacific slope of Xortli America. The diminished web and digital pal- 

 ettes constitute the resemblance ; but they fall, nevertheless, within the 

 range of the Uyla type. The 11. rcflilla is distributed throughout its 

 subregion and into the adjoiuiug one of Arizona and Lower (.'alifornia 

 under a slightly ditferent form. Southern California jmssesses another 

 variety along with the typical one. These varieties diller, as do these 

 of the Chorophilits triseriiitUN in the proportions of the head and body; 

 the first a longheaded and longer-bodied type; the most common, a 

 shorter headed and longer bodied; and the most southern form, a still 

 shorter headed and short bodied, with more varied coloration. 



Head L'loiijjMte; width enters Iciijjth ot'Iiead andliody consiilerjibly ovfr tlirci; tiiiicH; 



caiitliusiostralisstrai^'lit ; a trianj^nlar patoli botwccn cyi's xcapniarix. 



Head sliort ; widtli (inc-thiicl uf It'iii^tli n<jiUn. 



Head short, 1)i'oad ; linadlh contaliicd in total lenj^lli two and two-thirds tiniiM; 



form 8(inat lutiapn. 



I can not regard these forms as subspecies. 



Var. saipiilaris. 



Uyla wapiilarix Hallow, .sp, I'roin .South Californii, II. .S. I'ac. H. ){., Ivt'id., X, 'AM, 

 11. 21. 



Tlireespecimens, sai«l tobe from San Francisco, are all that the Museum 

 Smithsonian ])ossesses of this variety, which is proportioned somewhat 

 as the tnu! var. Tri.seriatus in the ("lunophilus of that name. The me- 

 tatar.sal bones are more closely bound and the web is less than in other 

 forms. The skin is nearly smooth. IJesides the interocular triangle 

 there is a dark dorsolateral band and in one a nuMlian dorsal. In one 

 specimen the tibia measures half the distance from the vent to the an- 

 terior angle of orbit, another half-way to end of muz/.le. 



This variety has every appearance of a terrestrial animal. It will no 

 doubt bo found to be connected with the ordinary type by annectant 

 forms. 



VaI!. nijilhi. 



lIylare(jUUi 15. »V C, rroceed. Ae. Nat. Sci., I'liila., vi, li^.Vi, 17J, \<>,\ :U)1 ; fSirard, 

 H.Tlt., IJ. S. Kxpl. Kxped., ls.-,<, cd, Vol. in. I"lf,'s. V.\'\^\ II. .S. Pae. U. K. .Snrv. 

 Kept., Williamson Aldiot, Vi, I'l. xxviii, Titr. :t (l.ail). 



Uyla HcapnUtr'tH Hallowcll partim, Troueed. Ae. Nat. Hci. I'liila., VI, 1^5*2, 183, and var. 

 hilj)ovhottdriiiU>, II. S. Tac. Iv. II. fSurv., s.., X> lat., p. 21. 



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