44 U. S. NATIONAL MUSEUM BULLETIN 206 



placed ill the genus CentroleneUa, that lack the humeral process or 

 "hook" in the males. 



Since Dr. Taylor wished to extend his studies of this peculiar 

 assemblage of species beyond the limits of Central America, it has been 

 decided to treat the southern Brazilian forms separately. Further 

 details of this group, with descriptions of several new forms, are 

 covered in a paper by Taylor and Cochran (1953). 



Family HYLroAE 



Procoela with the two halves of the pectoral girdle overlapping on 

 the midline and movable; an intercalary cartilage or bone present 

 before the termmal phalanx of the digits; astragalus and calcaneum 

 not fused. 



The careful work of Parker (1931, 1935) has indicated that Psevdis 

 deserves to be ranked as a separate subfamily of the Hylidae because 

 of its foot structure. The two subfamilies are separated by the 

 following key: 



a*. Additional intercalary phalanx shorter than the terminal one . . Hylinae 

 a*. Additional intercalary phalanx longer than the terminal one . . Pseudinae 



Aplastodiscus perviridis A. Lutz (in B. Lutz, 1950, p. 612; type 

 locality, Serra da Bocaina) is as yet unknown in collections outside 

 Rio de Janeiro. It is not included, therefore, in the present discussion. 



Subfamily Hylinae 

 Key to the genera of Hylinae of southeastern Brazil 



a*. A dorsal skin pouch for incubating eggs in female. 



fei. Pouch opening by a small supra-anal orifice .... Gastrotheca (p. 49) 

 6*. Pouch with a large longitudinal opening, 



c*. Skin of head ossified with skull Flectonotus (see below) 



c^. Skin of head free from skull Nototheca (p. 194) 



a*. No true dermal pouch for incubating eggs in female. 

 b^. Inner finger and toe opposable to other digits . . Phyllomedusa (p. 195) 

 b^. Inner finger and toe not opposable. 



d. Parasphenoid bones toothed Amphodus (p. 45) 



c^. No parasphenoid teeth. 



d*. Skin of head free from skull Hyla (p. 54) 



d'. Head a bony casque, with skin and skull ossified, 

 e'. Head not elongate; eye nearly as long as snout. 



Trachycephalus (p. 207) 

 e^. Head elongate: eye % length of snout . . Aparasphenodon (p. 45) 



The type of Flectonotus ulei Miraada-Ribeiro (1926, p. 109, fig. 64; 

 type locality, Nova Friburgo, Rio de Janeiro) was compared with 

 Nototheca fissUis by Bokermann (1950, p. 217). They were found to 



