;f'ffq»'i 



THE ISATKACIIIA OF NORTH AMERICA. 181) 



of the other species of Autoilox, which is quite (litlereiit from that seen 

 ill ricthodoii. 



TUii Aiitodnx ii'canns was originally established on a half grown speci- 

 men found by myself in Shasta County, Cal. A second specimen of 

 the same size was sent to the National i\[useu.n by Mr. Charles Town- 

 send from the same locality. The young specimens do not display the 

 physiognomy of the genus, but have the usual want of character as 

 coMipared with the adult. The vomerine series of teeth are, however, 

 rather better developed. The typical specimen has the following char- 

 acters : 



The vomerine series are straight, and do not quite meet on ihe mid- 

 dle line. They are entirely behind the nares, and do not extend exteri,)r 

 to them. Tiie paras[>henoid patches are united into one, and are well 

 separated from the vomerines. 



Form rather stout, and the tail short, etpiiding (from vent) the length 

 of the body (with vent) to the gular fold. Costal folds, 1'}. IIea<l a 

 longitudinal oval, with rather narro\.ed and not truncate niuzzK' ; its 

 length (to occii)nt) contained o'-J times in length from muzzle to groin. 



Limbs short; wlu-n pressed along the side they aresei)arate(l hy three 

 intercostal spaces. The digits are short and the internal ones are rudi- 

 mental. 



The color is black everywhere, and the superior surfaces are dusted 

 over with minute light specks. 



Mc.tmirciiii Ills. 



3T. 



Tt)tal U'li^th OK? 



Li'i)i;(h IVoiii iiHi/.y.lo (o axilla (iIOo 



Lciii^tli fnnii n\\i/./.U', to {;r()ii> O'JTf) 



Willi li of Lead at e-aiitlms oris 0(Hi 



l.i'iinlli of anterior limb , ()();l 



Lciifitli of anterior f.)ot (102 



Len<;tli of ))(i.s(erior limb OOV.") 



l.fn;;th of jKLsterior foot OUlVi 



This species is to be compared with the Vkthcdon inteniwilinn of 

 western Oregon. It is shorter ami more robust in form, having only 

 thirteen costal plica* instead of fifteen. The color is very diBerent. 



I'al. Nil. Xo. spcr. 



I:i71ll 

 I I.V.Ki 



I.ociilily. (;()llrcliir. 



Mil i III, Sli;isl:i Cuuiil.v, Ciil <!. U. Towiiscml. 



lid r.ivin^filim Slmii'. 



' 't! 





^'; 



■k 



I I' 2 



\ 



Tliis species is named from the aboriginal name li'ka, of the grand 

 peak of northern ('alif(>i'nia, .Mn:int Sliasta. From the same name the 

 town of Yrekii d<'riv«'s its name. So I am inlbi'med by Judge liose- 

 bor(Uigh, of that place, to wlioin I am under great ol>!igations I'or many 

 facilities and much inl'ormation. 



