Cope.] Ju [ 0cfc< 2 , 



The color of the upper surface is a brown, which is interrupted by a 

 coarse honeycomb or net-like pattern of a bright yellow color. The 

 inclosed spaces are as large or larger than the eye, excepting on the sides 

 of the head and body and on the foreliinbs, where they are smaller. They 

 are distinct on the external two digits on both feet. The posterior faces ot 

 the femur, with all the inferior surfaces are uniform brown. The eyelids 

 are of a paler brown, but whether this is due to the condition of the speci- 

 men or not, is uncertain. 



Measurements. 



M. 



Length of head and body 635 



Length to line connecting posterior borders of tympana. .010 



Width of head at do 012 



Length of fore limb 0233 



" " foot 010 



" hind limb 056 



" tibia 019 



" " posterior foot 026 



" " astragalus 011 



This species belongs to the same type as the Hyla leucophyllata. Its 

 coloration is unique in the genus. An allied species or subspecies has 

 been brought from the Purus river, Brazil, by Prof. Steere, of Ann Arbor, 

 Mich. It agrees in all respects with the H. favosa, but the heel reaches 

 the end of the muzzle, and the color of the superior surfaces differs. The 

 yellow covers the dorsal region, an imperfect reticulate pattern being only 

 visible on the sides of the head and body. 



Hyla marmorata Daud. 



PlTHECOPCS TOMOPTERNUS Cope. 



Ceratophrys dors ata Wied. 

 Dendrobates tinctorius Schn. 

 Dendrobates trivittatus Spix. 



Lacertilia. 

 Mabuia agilis Raddi. 



Mionyx parietalis Cope, gen. et sp. nov. 



In his monograph of the Ecpleopodine division of the Teidae, Professor 



Peters referred the known species to five genera, three of which were 



divided into subgenera. The definitions of most of these groups were 



derived from the pholidosis, the exception being Iphisa (Gray), which 



was defined by the lack of claws on the pollices. I am of the opinion 



that Professor Peters was not fortunate in his selection of the pholidosis 



as the basis of generic and subgeneric divisions. Although such a system 



may associate species which agree in general appearance, and hence be 



thought by some to be "natural," it is certain that the various forms of 



scales pass into each other by such gradations, as to be unavailable for the 



