FROGS OF SOUTHEASTERN BRAZIL — COCHRAN 73 



ently built just at the water's edge, and some had been left a little 

 above it by the lowering of the pond, but the next heavy rain would 

 have sufficed to wash the young tadpoles into the pond. The re- 

 tention of the egg-mass within the protecting mud walls just out of the 

 water must serve to prevent the depredations of egg-eating fish. The 

 effectiveness of this device and the hardihood of the species are indi- 

 cated by the large numbers of adults. Eggs measuring 2 mm., taken 

 from mud-nests at Santa Alexandrina, were developed sufficiently by 

 the following day to hatch into small dark tadpoles 8 mm. long, the 

 tail comprising 5 mm. of this length. Nine days later the tadpoles 

 were about 13 mm. in length, with tails of 8 mm. A tadpole, USNM 

 97237, with fully developed fore and hind limbs, measures 90 mm. of 

 which the tail is 55 mm. The largest in one series of tadpoles, USNM 

 96935, is 91 mm. in length, the still fully developed tail measuring 60 

 mm. and the fore limbs visible only under the skin. 



The adults stay high in trees except at the time of egg laying. The 

 male is said to come to the pond first to make the nest, then the female 

 arrives to lay eggs. 



Specimens examined 



BRAZIL: BM RR 1936.13.3.110-112; UZMK 34, Lund. 



DisTRicTO Federal: Rio de Janeiro, USNM 70539-40, Metcalf, Oct. 10, 1925; 

 AMNH 17420, A. Lutz, 1922. Palmeiras, USNM 96397 (tadpole), Novem- 

 ber, 1923. Santa Alexandrina, USNM 97444-57, B. Lutz, Cochran, and 

 Venancio, Feb 1, 1935. Tijuca, USNM 96240-1 (tadpoles). 



EspfRiTO Santo: ZSBS 59/1922, Bresslau, September 1913. 



MiNAS Gerais: USNM 70537-8, Metcalf, Oct. 19, 1925. Bello Horizonte, 

 USNM 96965, A. Lutz, December 1924; USNM 97896 (eggs), Cochran and 

 Venancio, Mar. 13, 1935. Lagoa Santa, UZMK 36-37, 42-45, Warming; 

 UZMK 253, Lund; UZMK 32-33, 35, Reinhardt. 



Rio DE Janeiro: Angra dos Reis, USNM 70535-6, Metcalf, Oct. 13, 1925. 

 Barro Branco, MZUM 104182, BaUey, 1941. Caxias, USNM 98568, Pas- 

 areUi, Mar. 12, 1935. Colonia Alpina near Teres<5polis, BM 94.5.23.13, 

 Goeldi. Massambar^, USNM 97234 (tadpole), A. Lutz, January 1920. 

 Montserrat, Campo Bello, USNM 96935 (tadpoles), A. Lutz, Nov. 15-18, 

 1923. Petr6polis, KZAEM 2034, Ohaus, 1906. Porto Real, BM 87.12.29.- 

 34^35 and 92.11.22.36, Hardy. 



Rio Grande do Sul: BM 82.10.4.14, von Ihering. Mendes, MCZ 371 (part). 



Santa Catarina: Hansa, KZAEM 2364r-6, Erhardt, 1928; BM 1928.11.5.107, 

 Erhardt. Humboldt, BM 1910.7.20.1, ZSBS 442/1920 (2), Erhardt. Nova 

 Teutonia, ltd, USNM 103685, Plaumann, January 1938. Rio Humboldt, 

 BM 1923.6.1.36, Fritsche. 



Hyla langsdorffii Dumeril and Bibron 



Plates 6, Figures e-g, 34, Figure c 



1841. Hyla langsdorfii Dum^ril and Bibron, p. 557 (type locality, Brazil). — 

 GuicHENOT, 1855, p. 82, pi. 17, figs. 1, la.— Peters, 1872b, p. 771.— 

 Boulenger, 1882a, p. 364; 1890, p. 325.— Baumann, 1912, p. 163.— 

 Nieden, 1923, p. 254. 



