THE BATRACHIA OF NORTH AMERICA. 



445 



SIIKKlill, 



Itiiiiiite 



irsils; ii 



of till' 



t 



liir<;o, tlc'sliy, with a rouiuled iiotdi bfliind, leaviiij,' the posterior coriiua 

 as two short obtuse i)rocesses, ilitl'eriii^' iroiu the cormia of the typi- 

 cal KnuK ; the tongue free posteriorly for lia'f its length. Internal 

 nares small, distant, elongated transversely. Voniero-palatine teeth 

 in two longitudinal series, approaching each other obtusely behind, and 

 separated by a considerable interval ; anteriorly these teeth (of which 

 there are oidy three or four in the lineal series) do no quite reach the 

 level of the inner nares. 



The skin is thick and coarse, above finely uneven ; smooth and even 

 below. Above and on sides thickly sprinkled with minute tubercles, even 

 on tympanum. A broad, dei>ressed, scarcely distinguishable ridge from 

 the eye along the sitles, indicated in the shrunken specimen more by a pe- 

 culiar pitted api»earance than in any other way. On the sides are sev- 

 eral circular areas of moderate size marked in the same way, probably 

 large pustulations in life. The anteroinferior face of buttocks with dis- 

 tinct i»orous pits; the posteiior laces granulated. The arms are well 

 (leveloi)ed ; the forearm and hand about equal ; the third linger longest ; 

 the inner very much swollen at the base, which is dark and horn like. 

 I'emur (Considerably more than half the length of body and longer than 

 the hind foot: the tibia still longer. The feet are broad; each toe 

 slightly dilated at the rounded tip, with epidermis thickened and horn- 

 like: the fourth toe is longest; the outer considerably longer than the 

 third. The web extends compU'tely between all the tips, so that there 

 is nothing free but the very extremities. There is an elongated un- 

 armed tubercle at the base of the inner toe, au'l a smaller oiu* oi>posite 

 to it: well-developed tuberch's are seen undei' all the articulations. 

 The transverse apophyses of the sacral vertebra not dilated. 



Above dark reddish or yellowish olive, very obscurely nutttle«l with 

 darker, and a faint indication of yelNtwish along the region of the lat- 

 eral ridge. Some whitish spots (Ui the sides, and scattered black dots 

 above on the tubercles. Legs transversely and obsoletely banded with 

 darker. Meneath yellowish, with obscure mottling on the throat. No 

 trace of a light line on the jaws, which are mottled. 



A tadpole of this sjiecies nu'asured three-fourths of an iiu;h to the 

 anus, and two inches to the tip of the tail, and yet the f«)re legs had not 

 been jtrotruded, although fully formed, showing a considerable growth 

 belbre maturity. 



The specimen above described is from VA Dorado County, Cal., and 

 was for a long time the «)nly one in our collections. During my expe- 

 dition to Oregon in l.S7!> I rediscovered it. and found it rather abundant 

 in the mountainous n'gions of northern Califoinia. The folhtwing is a 

 des(!ription of a specinu'U from r>aird, on the Met "loud IJiver. one of the 

 heads of the Sacramento. 



This species lielongs to the littna ti'mpnnnua gioup, and must l>e com- 

 pared with h'ana<t;iil is aurora Hd. Gird., and /»'. h iiiporaria iiretiima IJaird 





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