r 



"■"i fi 1 



h 



The uatraciiia of north amhuica. 38 ^J 



tlie groin. It is soint'tiini's only iiulicateil by a line of black spucks, 

 forming a bolder above and below. A pale line from eye to front of 

 hnmerns. Nnnierons rather large blaek .sjxtts on the groin and nnmer- 

 ons smaller ones on the po.steiior face of the femm, between which the 

 color is often dark red. Small black spots on [(osterior faces of tibia and 

 astragalns, anterior edge of tibia, and posterior edge of linuierns. Digits 

 with a light spot at each i)halangeal articnlation. Belly yellowish, with 

 or without a faint course reticulation of a darker color. 



Measitrcmcnts. 



M. 



Lonstli of head and body 0-11 



Lt'iiy;th ol' head to rictus oris OOfi 



Li'iij;lh to axilla, uxially 015 



Loiif^th of fore limb on front (>2'2 



Lcn;;tli of toro loot 001).-) 



LL'n<;th of hind limb from anus Ollj 



LtMij;(h of bind foot UiJ;5 



Width of bead at rictus oris 010 



Width of extended femora 0151 



As compared with the //. oxyrhinns of r.oiilenger (Ann. Mag. Xat. 

 Hist.. i<SS;i, J). 344), this frog has iimeh sliorrer hind leg-^ and a different 

 eohnation, as wed as some web between the toes, jndging from Dr. 

 13onlenger's <les(!rii)tion. The //. o.n/r///;/«.s' comes from western Mexico. 

 The II. variolosuN is eoiiimon in (,'entral America and sonthern Mexico. 



This species has been found thus far only in the neighborhood of 

 Situ Diego, in Nueces County, in southwesttMii T(>\as. A number of 

 specimens have been l)rougiit from that locality and been obtained lor 

 the United States National Museum, by William Taylor. 



DENDlt()15ATlD K.* 



Cope, Nat. Hist. Hi'v.,lt:Or), anil .lonrn. Ac. Pliila., 1(^07. 



i7i//rtj)/('siH/(i' (;iinth.,Cat. Hatr. Sal. I5rit. Mns., l?^.")!) : Mivart, rnHced. Zool. 

 Soc. Loud. 



There are but two genera of this family and they agree in the follow- 

 ing characrters: 



(). o. prefrontalia widely sei)!irated ; ethmoid broad, ossified to ex- 

 tremity of muzzle; no ptirotoid glands or metatarsal shovel ; lermiinil 

 phalanges with two divaricate limbs supiiorting dilations ; tongue nar- 

 row, free, iind entire behind. 



They differ as follows : 



" Omostcrnnm and stern iim vvitb biniy styles " Mnnii'lhi Iinnl. 



Omosternnm wcaK', scniiossilicd ; st<'rnnm cartilajiinouH Dciidrohdli s Wa^;l, 



The species of these gt'uera are distributed as follows: Mante!la,4 

 species, Miidagascar ; Dendrobates, S species. (\Mitral American, Colom- 

 bian, iuid Draziliau regions of Neotropical realm. 



" riatc 74. 



I I 





