pendage, 



GENERA OF THE ARCIFEROUS ANURA. 



/■ 



Thickness of temporal arch, .... 

 Breadth between extremities of quadrata, as crushed, 

 Transverse extent of third vertebra with ap 

 " " 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, 

 This species was the cotemporary of the Morelia papyracea 

 Rante and Cyprinidae of the period and place of deposit of 

 Rhine-Prussia. 



79 



In. Lines. 



•8 

 1 7-5 



8 

 8 



5-8 

 8 

 1 3-6 



9 



1 2 



1 2 



7 



4.5 

 5-5 

 2 

 11 

 10 



( O 



, the Pala?obatrachi 

 the Braunkohle of 



ASTER OPHR YDIDvE. 



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, Gtlir. ; Asterophrys, Tsclt. ; Megalophrys, Kuhl ; Xenophrys, 

 Gthr. 



The Palaeobatrachidaa 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 Rana m ac r o d o n , and R. k u h 1 i i . 



