FROGS OF SOUTHEASTERN BRAZIL COCHRAN 251 



by the presence of encysted Cercaria or other ectoparasites which 

 frequently infest both this genus and Elosia. 



While a great many of the specimens have a white throat with no 

 markings except a short, median, dark longitudinal spot, about one 

 specimen in ten has a reticulated dark pattern all over the throat, and 

 it was possibly this unusual color pattern to which Fitzinger appUed 

 his name of Phyllobates fuscigula instead of to a different species, as 

 Dr. Lutz thought (1931, p. 227). 



In about three-fourths of the specimens a dark longitudinal line 

 appears above the tympanum, in a few cases extending along the dor- 

 solateral region for a short distance. The top of the head usually 

 shows a fairly prominent, broad, dark, interorbital bar, with a blurred, 

 dark, V-shaped one immediately following from the posterior corners 

 of the eyes, while the back sometimes shows an indistinct W- or )(- 

 shaped mark, the whole pattern being often nearly blended with the 

 dark dorsal ground color. The pale stripe in front of the groin is 

 fairly constant in most examples. 



Remarks. — The reference by Beebe (1919, p. 209) to an example of 

 gaudichaudii Dumeril and Bibron from Bartica District, British 

 Guiana, must have been due to misidentification, as this genus is con- 

 fined to Brazil. The specimen unfortunately has disappeared from 

 the collections of the New York Zoological Society and so I have been 

 unable to examine it. Noble (1931, p. 113) states, "In Crossodactytus 

 gaudichaudii the second finger of the male is spatulated." I do not 

 find that the second is any more enlarged, i. e., "spatulated," than the 

 fourth or third fingers in well-preserved male specimens or in females. 

 The degree of enlargement of the finger and toe disks varies consider- 

 ably in individuals, even in those taken at the same time and place. 



Specimens examined 



BRAZIL: MHNP 746 (2; cotypes of C. gaudichaudii), Gaudichaud. 



DiSTRicTO Federal: Covanca, Jacardpagua, USNM 97495-539, Cochran, 

 Dias, and Venancio, Feb. 7, 1935. Gavea, BM 1910.5.4.12-17, Bannerman. 

 Recreio dos Bandeirantes, USNM 97629, B. Lutz, Cochran, and Venancio, Feb. 

 10, 1935. Rio de Janeiro: USNM 15481-2 (cotypes of Elosia vomerina), U. S. 

 Exploring Expedition, 1837; USNM 50602, Rose, July 1915; USNM 70548-50, 

 Metcalf, Oct. 11, 1925; USNM 81155-8, A. Lutz, 1930; MZUM 68768 (2), 

 A. Lutz, August 1930; BM 45.5.25.8 (type of Limnocharis fuscus), Charles 

 Darwin; NHMW (10), Steindachner, January 1874; ZSBS 26/47, A. Lutz, 

 1923; ZSBS 46/47, Bresslau, January 1914. Avenida Niemeyer, USNM 

 97468-9, Cochran, Dias, and Venancio, Feb. 7, 1935. Paineras, slope of 

 Corcovado, USNM 97442-3, B. Lutz and Cochran, Jan. 27, 1935. Pico de 

 Tijuca, MZUM 104240-1, 104243 (2), Bailey, 1941; USNM 52604, Rose, Aug. 

 9, 1915; USNM 96268-70, A. Lutz, 1923; USNM 97420-3, A. Lutz, Cochran, 

 and Venancio, Jan. 21, 1935. 

 MiNAS Gerais: Passa Quatro, USNM 96920, A. Lutz, February 1930. 



