THE BATUACIIIA OF NORTH AMERICA. 435 



RANA C'AXTAniiKiKNi-- .; J'.ainl. 



ProtTi'il. Ac. riiilii., l.-^.')l, i).('>vJ; lioiilcii;;^!-, ISiill. Soc, Zool. Franco, 

 18^11, p. 'JOit; (It). Cat. JJatr. «al. lint. Miis., !-<•,», p. .|,-,. 



nana sijlvdtica De Kay, X. Y. Faun, iii, p. Cil, IM. 'JI, '_>■,'; Hoiilenj^cr, Hull. 



8oc'. Z<)()l. FiiUict', l"*"'.), ]). 171. 

 IlaiKt tiuiporaria, var. Hilralicd pt., (Jiintli., Cat. I$rit. Miis., I-^IW, p. 17. 

 Jlaiia tiiiiponiiia caiiluliriijmtin Cope, Clicck-List X. Anier. Hatr. Rcptil., 1^75, p. ',12, 



Tliis species (litters more widely from the R, temporaria than does the 

 R.pretiom, so iiuich so, that I now follow Professor IJaird and Mr. Bon- 

 ieiij;'er in niaintaininf'it as a distinct species. As usual with the si)ecie8 

 of their }?enus, it pre.sents such variations as to render the coinmou 

 ori{j[in of all the.se forms certain. Thus in four specimens from Lake 

 AUoknagik, Alaska, the web of the hind foot is as fully developed iu 

 the R. tcmporaria pret'osa, only two phalanges of the fourth toe being 

 fiec. As.sociated wifn them was a specimen of the variety R. can- 

 t((bri(ien,si,s crittata. In the specimen (No, 5IG9) from Puget Sound, 

 Washington, the jwsterior leg is remarkably elongate, reaching the 

 end of the muzzle, so as to approach nearly to the R. silratim. 



Two (listinct subspecies and a variety of the Rana cuntnhrigensis are 

 known to me, which difter as follows: 



Only two plialaiiRPS free; no longitudinal stripcHou back or tibia li. c. latiremis. 



Tlireo i)liiilaii;fos free ; no lonf^itiulinal strips on back or on tibia R. c. vriltata. 



Three jilialan^^es free ; a median dorsal and an anterior tibial lij;!!t strii)e 



I{. V. cantabridyensia, 



Raua atntahrigensis latiremiii Cope. 



ProetMMlin<j;s Ainericaii Pliilos. Society, Irr-'t!, p. iV20. 



Muzzle rather ol)luse, more so than in the typi(!al h\ contabrifjf/ensis, 

 and widened posteriorly; its length at the i)ost» rior edges of tlie tym- 

 pana entering the leiigtli of the iiead and body three and a half times. 

 Till', tympanic drum is very distinct, and its long diameter enters tiiat 

 of the eye two-thirds of a time. The nostrils are ecpiidistant between 

 the orbit and tiie end of the muzzle, and look upwards. Tin- skin is 

 i|Mite smootii everywhere, with adosolatcral tbhl wlii«;h is easily ol)iirer- 

 alcd by iimnersion in alcohol. Tlie heel of the extended hind leg retiches 

 to till' middle of the eye; the second toe reaches nearly to the apex of 

 I lie Unee. Tlu^ ]»alination is remaikably wide, leaving but one free 

 plialange on all the digits except the fourth, where two are free. The 

 internal cnneil'orm tubercle is <piite prominent, with an obtuse convex 

 edge. There is no extermd tubercle. The internal finger (index) is 

 short and stout, and is very little or not at all longer than the second 

 (third) finger. 



Color above, light brownish-gray; below, white. There are more or 

 less nunuM'ons blacik spots on tiie sides, which incline to fuse more or 

 les.s imperfectly into a longitudinal band along the(lor.solateral dermal 



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