184 U. S. NATIONAL MUSEUM BULLETIN 206 



Santa Catarina: MP 786. Humboldt, USNM 66556-8, Fritsche, November 

 1918; ZSBS 68/1925 (4), Erhardt, November 1919. Itapocii, ZSBS 45, 

 Unlauff. 



Sao Paulo: Juquid, 8 km. north of, MZUM 104190 (2), Bailey, 1941. Sao 

 Paulo, ZSBS 20/1914, Weicke, 1913. 



9. aurantiaca — group 



The frogs of this group, represented in southeastern Brazil by 

 aurantidca orophila and aurantiaca planicola, are unlike other hylids 

 in several respects, one of which is the highly peculiar body form 

 and angular head. The translucent waxy-green texture of the living 

 animal disappears in the preserved specimen, which changes at once 

 to an opaque creamy white tint, the body assuming a cramped, semi- 

 circular shape apparently due to some contraction of body muscles 

 that does not occur often when preserving hylids of other groups. The 

 anal skin flaps, well developed in the three smooth-skinned forms of 

 aurantiaca, are not like the dermal serrations found in the anal and 

 postanal regions of crepitans and a few other frogs of this family. 



The forms from southeastern Brazil are separated by the following 

 key: 



a >. Adult size 30 to 35 mm.; femur and foot shorter (femur 41 to 45, foot 41 



to 43 percent of total length .... aurantiaca orophila (p. 184) 



a 2. Adult size 21 to 26.5 mm.; femur and foot longer (femur 45 to 47, foot 43 to 



45 percent of total length) .... aurantiaca planicola (p. 186) 



Hyla aurantiaca orophila Lutz and Lutz 



Plattc 17, Figures e-j 



1895. Hyla parvula Boulenger (part), 1895a, p. 646 (specimen from Teres6polis, 



Rio de Janeiro). 

 1912. Hyla aurantiaca (not of Daudin) Baumann, p. 163. — Miranda-Ribeiro, 



1926, p. 70 (part). 

 1938. Hyla (Sphoenohyla) orophila Lutz and Lutz, p. 178 (type locality, Serra 



do Mar, 4 km. from Petr6polis; found also at Nova Friburgo, and 



Serra da Bocaina at the Rio de Janeiro-Sao Paulo boundary). 



Description. — Adult male, USNM 96692, Bonito, Serra da Bocaina, 

 Rio de Janeiro. Vomerine teeth in two elongate, nearly transverse, 

 narrowly separated patches between and extending to slightly behind 

 the posterior borders of the choanae; tongue more than one-half the 

 width of mouth opening, posteriorly almost entirely attached, cordi- 

 form and deeply notched, anteriorly truncate like lower lip border, 

 which is squarely cut off; snout moderate in length, angularly/'' \- 

 shaped when viewed from above, rounded and projecting greatly 

 beyond the lower jaw in profile; nostrUs superolateral, not projecting, 

 nearly at the tip of the snout, separated from each other by an inter- 

 val only slightly less than their distance from eye. Can thus rostralis 

 not clearly defined; loreal region vertical, flat. Eye moderate in size, 



