THE J5ATHACHIA OF NORTH AMERICA. 



433 



latcnil 

 li (IluIc 

 •ht lino 

 idos of 

 ; or lo^^s 



iiyer, lit 



ml U'lii- 

 wostoni 

 ti(is(t h\ 

 f«)llo\vs: 



t less ili>- 



(MmI. Ar. 



liu^. r.!-i-; 



/.D.ll. 1 1. 



1-alist, 1-7'.'. 



Iio typical 

 tlu' po.stt ■ 

 (Icr. Tilt' 

 I small t'X- 



lli'llll olt 



Cantliu.-^ 

 rtlic snout 

 l»apilla, as 

 iU'ial I'xra- 

 lliaii tlii'ci- 

 iii that ol 

 l\iiipanuiii 

 ( tliinls tlif 

 )nj;iu' very 

 cs iiaiTow, 



I two small 

 LMval iMpial 



'I'lii.s ante- 

 i- border of 



II tilt' sides 

 d loys, pus 



■•■■t 



* 



I 



filiated with small as[)erities, seen even on the interior dij?ital mem- 

 brane. Those on the buttocks seem to rei)lace the usual f>ranulation,of 

 which no traces are visible. Many of these latter pustules on the but- 

 tocks appear to consist of glands, as their open mouths are visible in 

 the largest specimen on the inferior surface. 



The third flnger is longest, then the fourth ; the first longer than the 

 second. The femur is shorter than the tibia, and both shorter than the 

 foot ; they are not quite half the length of the body. The tifth and third 

 toes are equal ; the foot well webbed. The terminal jointof the fourth toe 

 is entirely free; the web extends from the tip of the outer toe to nearly 

 the second articulation of the next, running up to the first articulation, 

 and again on the other side in a similar manner, narrowing to the tips 

 of the third, second, and first toes on the exterior sides, and on the in- 

 ner, starting from the first articulation. The inner edge of the foot is 

 narrowly margined. The cuiu'iform process i.>, elongated and diminu- 

 tivj', with a small tubercle opposite it on the sole, the whole of which is 

 covered by asperities. Inner loe not one-third total length of foot. 



There is a broad depressed ridge extending from the eye on each side 

 nearly to the thinks, becoming indistinct i)osterioiiy ; in some specimens 

 perceptible at any point. No other ridges are visible, except a slight 

 glandiform prolongation of the upper jaw, extending over the aim, and 

 interrupted opposite the end of the Jaw and above the shoulder by the 

 groove pa.ssing behind the tynii)aiuini. 



(Jeneral (!olor, above dull yellowish-brown (dead leaf), darker on the 

 sides. A number of circular l)iown blotches on the back between the 

 ridges, which themselves are rather brighter than the rest of the ground- 

 color, and not invaded by the blotches. In some the.se blotches are 

 very few in number, iiiid in none are they in any definite .serial arrange- 

 ments or areolated. The outer siufiUH's of the limbs are blotched 

 transversely; a dull yellowish line along the upper Jaw, distinct only 

 under the eye, nari'owing behind, and terminating above the arm ; in 

 young specimens an indication of a dark area back of the eyes and 

 iiKiluding the tympanum, somewhat as in R, si/lratica. (Jnder parts 

 yellowish-white, obsoletely marbled with brown. In life the groin and 

 posterior parts of the abdomen, with the adjacent parts of the thighs, 

 are salmon-<;olor. I took a specimen at Salt Lake City, Utah, which 

 has no tra(!e of dermal folds, and a smooth skin. Sides and above uni- 

 form dusky; thighs below anil i)osteiior part of abilomen red. 



This is the characteristic Ivana of tne northwestern interior, being 

 accompanied by niifoci)! u iiihie unI s iunl liKNCdiiiinn rctitstnm. In life the 

 posterior part of the abdomen, with the inferior faces of the thighs, are 

 of a bright salmon red. 1 »)l)taiiicd it the entire length of the valley of 

 the Warner Lakes, but not at Fort Midwell. I have found it to range 

 as far as the eastern foot of the Hocky .Mountains in Montami;* and 



".\iiirrii Mil N;il iir.ilisi, 1-7'.', (i. IX). 



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