CxENERA OF THE ARCIFEROUS ANURA. 



79 



Thickness of temporal arch, .... 



Breadth between extremities of quadrata, as crushed. 

 Transverse extent of third vertebra with appendage, 

 " " fourth " 



" " sacral " " 



Length of sacral diapophysis, 



" of ilium, .... 



" of coccyx, .... 



" of femur, .... 



" of tibia, . . . . 



" of tarsus, .... 



" of fifth metatarsus (exterior), . 



" of fourth "... 



" of first "... 



'•' of third digit from tarsus, 



" of humerus, .... 



" of ulna and radius, 



" of third metacarpus, ........ 3'2 



Tliis species was the cotemporary of the Morelia p a p y r a c e a , the Pala>obatrachi 

 Rana3 and Cyprinidae of the period and place of deposit of the Braunkohle of 

 Rhine-Prussia. 



ASTEROPHRYDID^. 



Vertebrae opisthocoelian. Diapophysis of sacrum dilated, of first coccygeal 

 vertebra wanting ; the latter attached by but one cotyloid cavity (except in one 

 genus). Ribs none. External metatarsi not separated for a web; terminal pha- 

 langes continuous, simple. 0. fronto-parietalia not strongly ossified medially, but 

 without fontanelle. Superior plate of the ethmoid well developed anteriorly. Ear 

 perfectly developed. Xiphisternum a slender osseous style (first two genera not 

 examined). 



Genera: Cryptotis, Qtlir. ; Asterophrys, Tscli. ; Megalophrys, Kuhl ; Xenophrys, 

 Gthr. 



The Paloeobatrachidaj difter from this family in the conversion of their seventh, 

 eighth, and ninth vertebral centra and diapophyses into a sacrum, instead of the 

 ninth only ; and in the osseous covering of the cavum tympani and tuba Eustachii. 



Cryptotis, the only Australian genus of the family, possesses two sacral condyles 

 for the articulation of the coccyx ; it has a long tooth-like process on the os dentale, 

 similar to that seen in Kana m a c r o d o n , and [I. k u ii 1 i i . 



