X 



THE BATRACIIIA OF NORTH AMERICA. 309 



coiiuecting the posterior narcs. Eyes very i>roiniiiont. From these a 

 strong foUl passes the posterior to the angle of the mouth and across 

 tlie guhir re:,;ioi. , tympanum covered by a portion of the parotoid 

 ghmd anteri'/r to this. Parotoid pro])er very hirge, extending beyond 

 Ncapuli), ben. upon the side; bounded interiorly by a strong fold, wliicli 

 extends from the one .above mentioned to the groin. IJelow this, on 

 the sides, are two or more other folds. Skin of upper surfaces coarsely 

 tuberculous; that of the crown thick, of the extremities nearly suiootii. 

 A large gland occupies most of length of tibia. Abdomen n.inutely, 

 pubic region (toarsel^', rugose. Cuneiform process rather short, very 

 prominent. Choanal smaller than ostia pharyngea. Tongue entire, 

 with a narrow free anterior border, one-third tree posteriorly. Ex- 

 tended heel reaching fiont of humerus; tibia three times as long as in- 

 terorbital width. Three phalanges of fourth toe tree from web. Color 

 ill spirits; above ashy l»rown, below yellowish ash. 



MramircmeiilK of Xo. I{ii94. 



Li'M^itli of lit'iid and Ixxly Or>r> 



Lciintli (if liciid to parotoid fold ()l,"i 



U'idlli of head at ciintliiiH oris , OJIJ 



L iiUlli of fore 11 nil) fmui axilla 0'2',\ 



1,1'n.nlli of 111 lid 11 nil I from >;r )iii (I.Vi 



l,iii;;lli of tiliia (1175 



Lcnutli of taiMiis 0()i>:,' 



l.«'ni,'tli of rest of hi ml foot O'JOJ 



The cliaractei's which distinguish this sjx'cies are numerous. In its 

 general appearance it has a great rcsembliinee to the Tiii/o conipacfilis 

 of tli(^ s;;me country. Hut one specimen is known. 



No. .'UJJK; one spe(!imen ; V^alley of Mexico ; J. l*otts : alcoholic;. 



I 



I 



CYSTKlNATinDJ:.* 



Hiiiiidir, part., ('jisliiiiHilliiihi , jiarl., lilnco'ilun'iiitii', jiart., Ahilhhv, part., ('pcniliiilir, 

 ni>iiihiiniloriilii , iiarl., /////(»(/((/((■, ]»arl., Giintlicr. Cat. i>atr. Sal. 



('Hxliiiiiiilhidir lUt\>f, Nal. Hist. Ifcv., l-^Ci."), \t\ns Sittjiliinjiodido'. part. 



f 7/.s/((/H((//n(/(r Copr ; .loiini. .Vc. I'liiia. (','), ^ '■ iH.iti; |{>nili'ny;cr. Cat. Hatr, Sai., l$iit. 

 Mils., ii cd. |S,<-J. 



llomhiiKiloriilii , jiarl., PhclvnmnHlidir, AhilUliv,\\\\v\., I'ohijHdiitldir, jtart., /iVniiV/d, jiail., 

 DixiojIoKnithi , part., Mivart, I'rocrcd. Zool. .Soc, \riC>\). 



Vertebra^ proccelons; no ribs ; sacral <iiapophyses (tyliinlrical, obtii 

 hedral or slightly depressed distally, inclined upwards. IJrostyle sei)a- 

 rate, iittached to twoeoinlyles, without diapophyses. Teiminal phalan- 

 ges conti tn)us, either uniforndy conic, or with divergent teiminal procs 

 esses or their rudiments. Sternum distinct. \o teeth on the mandible. 



Tliis, after the Ilylidai the most extensive family of the Arcifera, em 

 braces one liundre<l and lifty-six species, whicrh represent t hit ty-.seven 

 generic types. 



Th ; most c nnpletely develojx'd geniiH exhil»iti a cranitiMi without 



• l'lal«'s7(l,T1. 



a I 



'*tt 



] ' I, 



1 i 





