THE BATEACHIA OF NORTH AMERICA. 445 



large, fleshy, with a rounded notch behind, leaving the posterior coruaa 

 as two short obtuse processes, differing from the coraua of the typi- 

 cal Rana ; the tongue free posteriorly for half its length. Internal 

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

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

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

 there are only 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, depressed, scarcely distinguishable ridge from 

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

 culiar pitted appearance 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 porous pits ; the posterior faces granulated. The arms are well 

 developed ; the fore-arm and hand about equal ; the third finger longest ; 

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

 Femur 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 epideruiis thickened and horn- 

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

 third. The web extends completely 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, and a smaller one opposite 

 to it; well-developed tubercles are seen under all the articulations. 

 The transverse apophyses of the sacral vertebra not dilated. 



Above dark reddish or yellowish-olive, very obscurely mottled with 

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

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

 above on the tubercles. Legs transversely and obsoletely banded with 

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

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



A tadpole of this species measured three-fourths of an inch to the 

 anus, and two inches to the tip of the tail, and yet the fore legs had not 

 been protruded, although fully formed, showing a considerable growth 

 before maturity. 



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

 was for a long time the only one in our collections. During my expe- 

 dition to, Oregon in 1879 I rediscovered it, and found it rather abundant 

 in the mountainous regions of northern California. The following is a 

 description of a specimen from Baird, on the McCloud Eiver, one of the 

 heads of the Sacramento. 



This species belongs to the Rana temporaria group, and' must be com- 

 pared with Rana agilis aurora Bd. Gird., and R. temporaria pretiosa Baird 



