TIIK HATKACniA OF NOKTII AMKKICA. 



20;") 



\\ 



11 

 h 



st 



very short. Tlie lengths are, bogimiiiiy witli the shortest, l-.i-L*-!-."}. 

 The imiiiber of i»hahiiige.s (aken in order is: l-U-JJ-.i-L'. Thi' epider- 

 mis oil the extreinitii's of all the digits is horny. Tiiere are no distinet 

 palmar or phinlar tnbereles. 1 iiave not diseovered any horny phites 

 on the inner sides of tlio posteiior legs, sueh as occur in the 1). rifitJcs- 

 cvns (hiring the breeding season. 



The cliaraeter of the surface of the skin varies aceording to the sea- 

 son and h)eaiity. In a majority of specimens the upper siiifaces are 

 sinootli, but wrinkled more or less closely. In si)eeimeiis which have 

 been exposed to drought, the surface becomes rough, with small liaid 

 pnijections. The lower surfaces are always studded with minute lioniy 

 points so as to behisi)id. These become more numerousand prominent 

 in specimens where the dorsal integument is roughened. Lateral folds 

 are very obscure in this species, and can only be traced on the superior 

 part of the sides. Twelve such grooves may be (tounted, the first and last 

 being opposite the humerus and femur respectively. There is a dis- 

 tin(;t transverse postgular fold. The digits have thin dermal margins 

 towards the base. The genitalia are very prominent during the breed- 

 ing season, and the orifice is longitudinal, and its edges are marked 

 with transverse wrinkles. Internally there is a large promiiient papilla, 

 simulating an intromittent organ, which rests in a fossa, whose jmste- 

 lior wall is comjtosed of a series of columnar papilhe, which radiate 

 backwards and downwards. The free membrane of the edges of the 

 tail is much reduced, or is even wanting, in the specimens with rough- 

 ened skin. 



2 



6 ■' ' f 4 



Via. 51 . Dii'mv'''.'/'"" ' irDKim 



No. 11407. S;iii Francisco; J, f. 

 McanKremcnts of Xo. llf)"?. 



M. 



Tdliil length 170 



Li'iiglli ol' liL'ail iiiid Itmly 078 



Li'iigth to groin OCtl 



Lnigdi to axilla O^C. 



Length to can thus oris Ol'i 



L(!ngth to anterior cantluiH oeuli 005 



Length of Core-leg 027 



Length of eiibitiis Oil 



I.iengtii of niiinuH 0115 



Length of hind leg (KW 



Length of tibia 0085 



Length of pes Oi;!(i 



Interorhital width 075 



Greatest width of head 0175 



Depth of tail at iniddlu, with flu 014 



'.m 



