10 MR. W. K. PARKER OX THE STRUCTURE AND 



in the " Batrachia Salientia" are now put into the genus Rappia) ; they are 

 narrow-backed Tree-frogs. 



32. Ili/perolius marmoratus, Gray, sp. — Adult female, 1^ inch long. Pai'amatta, 



AustraUa. 



I. A. a. C. — Sixth Family. " Bombinatorid^." 



This type has dilated sacral apophyses but no parotoids, it has ribs, and abnormal 

 {opistJiocoilian) vertebi-aj, but no columella, or tympanic cavity. 



Genus Bomhinator. 



33. Bomhinator igneus, Rosel, sp- — ^Adult female, If inch long. Europe. 



I. A. a. 7. — Seventh Family. " Pelobatid^." 



Tlie last has one of the softest, this has one of the hai'dest, skulls. There is no 

 cavuna tympani, but there is a small bony columella. There are no ribs, and the 

 vertebrae are procoelian ; it has a broad sacrum, but no parotoids. 



Genus Pelohates. 



34. Pelohatus fuscus, Laur., sp. — Adult male, 2 inches 5 lines long. Europe. 



I. A. h. — With dilaled digital disks. 

 First suh-division of Tree-frogs. 



First Family. " PoLYPEDATlD^." 



Ear perfect. Sacral apophyses cylindi'ical. " Omosternum " with a bony shaft 

 (MiVART, p. 292). "No parieto-frontal fontanelle " (except in such small types as 

 the Australian Rappia hicolor). No neck-glands. 



First genus. Polypcdates. 



35. Polypedates cMoronotus, Gthr. (see P. Z. S., pp. 567-576, plate 65, fig. A). 



Adult male, 2 inches long (Gunther gives the length of the body in the 

 male as 51 millims., and of the female 93 millims ; p. 570). India. 



36. Polypedates macidatus, Gray, sp. — Adult male, 2 inches 1 line long. India. 

 Second genus. Rhacophorus. 



37. Rhacophorus maximus, Gthr. — Adult male, 3^ inches long. N. India. 

 Third genus. Ixalus. 



38. Ixahts variahilis, Gthr. — Adult female, 1 inch ] lino long. Ceylon. 



