DEVELOPMENT OE THE SKULL IN THE BATRACHIA. 
II 
Fourth genus. Hylarana. 
39. Hylarana malabarica, Dum. and Bib. sp. —Young, f inch long. India. 
40. Hylarana temporalis, Gthr. —Adult male, 2-g- inches long. Ceylon. 
Fifth genus. Rappia. 
41. Rappia -? sp.—Adult female, -f inch long. Lagos. (Probably if. lago- 
ensis, Gthr., see P. Z. S., 1868, pp. 478-490, plate 40, fig. 2.) 
42. Rappia (Hyperolius) bicolor, Gray, sp.—Adult female, £ inch long. Dog-trap 
Boad, Paramatta, Australia. (See “ Batr. Sal.,” p. 89 ; Dr. Gunther there 
remarks that, “this species is very probably the type of a separate genus, but 
the condition of this single specimen does not enable me to give the characters 
with certainty.” The fact of the case is, that the skull of this specimen is 
extremely membranous, as much so as in that of Acris Picheringii (see 
Plate 19, figs. 6-10, and Plate 30, figs. 1-5). The Rappia from Lagos had, 
on the contrary, a highly ossified skull, with a well-covered roof (see Plate 28, 
figs. 6-10). 
Second Family. “ Hylodhme.” 
(I make up this family of Professor Mivart’s sub-families Acridina and Hylodina.) 
No bone in the manubrium (“ omosternum”). Vertebrae proccelian ; fontanelle very 
open (Acris), or covered ( Hylodes ). 
First genus. Hylodes, 
43. Hylodes martinicensis, Bib., sp.—Adult female, I \ inch long. Martinique. 
Second genus. Acris. 
44. Acris Picheringii, Holb.-— (A) Adult female, 10 lines long (-§ inch) ; and 
(B) larva, 1 inch 2 lines long ; tail, £ inch ; hind legs, \ inch. Cambridge, 
Mass., U.S. 
Second sub-division of Tree-f rogs. 
Family “Hylhme.” 
These have the sacral apophyses dilated; and have no parotoids. The ear is 
perfect, and, as a rule, the fontanelle is open ; I find it covered in Hyla rubra, and 
almost covered (by sculptured solid bones) in Nototrema. 
First genus. Hyla. 
45. Hyla Ewingii. Dum. and Bib. —Adult female, 14 inch long. Van Diemen’s 
Land. 
46. H. phyllochroa, Gthr. (see P. Z. S., 1868, p. 481).—Adult female, 1 inch 5 lines 
long. Cape York, Australia. 
c 2 
