364 U. S. NATIONAL MUSEUM BULLETIN 206 



lower parts vermiculated with yellowish-brown color. A white rostrodorsal line, 

 continued on the sacrum with another transverse one which traverses the posterior 

 side of femur. 



Dimensions: Body, 16 mm.; leg, 20 mm. 



Specimens, 1, No. 595 [MP] from Os Perds, SSo Paulo, collected by Bicego 

 in 1895. 



Genus Elachistocleis Parker 



1927. Elachistocleis Parker, 1927a, p. 4. (Genotype, Rana ovalis Schneider.) 



Generic diagnosis. — Prevomer divided, the postchoanal portion lost; 

 palatine absent. Clavicle and precoracoid present, much reduced, 

 curved, resting on the mesial half of the coracoid; omosternum absent; 

 sternum cartilaginous. Vertebral column diplasiocoelous. Terminal 

 phalanges simple. Pupil round, tongue oval, entire and free behind. 

 Two smooth or slightly crenulate dermal ridges in front of the pharynx, 

 the anterior shorter and curved. Digits free, the tips not dilated. 



Elachistocleis ovalis (Schneider) 



Plate 33, Figures c, d 



1799. Rana ovalis Schneider, p. 131 (no type locality given). 



To the long synonymy of this species given by Parker (1934a, p. 121), the 

 following references may be added: 

 1867. Engystoma ovale Hensel, p. 140. — Cope, 1885a, p. 185. — Boulengee, 



1898a, p. 131.— Budgett, 1899, pp. 305, 310.— Peracca, 1914, p. 104. 

 1888. Engystoma ovale bicolor Boulenger, 1888c, p. 416. — L. Mijller, 1922, 



p. 171. — Muller and Hellmich, 1936, p. 92, fig. 33. — Carvalho, 



1939a, p. 280. 

 1919. Gastrophnjne ovale Beebe, p. 124. 

 1926. Engystoma ovale cesarii Miranda-Ribeiro, p. 184, footnote (type locality, 



Sao Paulo). 

 1926. Engystoma cesarii-moitae (nomen nudum) Miranda-Ribeiro, p. 184, 



footnote. 

 1926. Engystoma ovale concolor Miranda-Ribeiro, p. 185 (type locality, Ypiranga, 



Sao Paulo). 

 1930. Elachistocleis ovalis Mertens, p. 163. — Myers, 1942, p. 155. — Dunn, 1949, 



p. 13. 



Description. — Adult male, USNM 121333, Butantan, Sao Paulo. 

 Snout elongate, forming an acute angle rounded at the tip when 

 viewed from above and in profile, nearly 1% times the eye diameter; 

 upper jaw projecting considerably beyond lower, which has the same 

 truncate, trilobed anterior margin as in Microhyla subnigra; tongue 

 large, nearly two-thirds the width of mouth opening, long and oval, 

 without a notch in its very free posterior border; nostrils antero- 

 lateral, their distance from end of snout about two-fifths of their 

 distance from eye, the interval between them three-fourths their 

 distance from eye; no furrow below nostrils; canthus rostraiis rounded, 



