246 U. S. NATIONAL MUSEUM BULLETIN 206 



is not a factor in making conspicuous the dorsolateral folds, because 

 all of the 45 examples of gaudichavdii from Covanca, preserved simul- 

 taneously in the same preservative, show every condition of the 

 dorsolateral fold. 



Specimens examined 

 BRAZIL: 



Rio de Janeiro: Barreira, near Teres6polis, ZSBS 2/1924, 45/47, 47/47, Bress- 

 lau, 1914. Colomi, Teres6polis, USNM 97726-8, Sandig, Apr. 10, 1935. 

 Colonia Alpina, Teres6polis, BM 94.5.23.2, Goeldi. Guapi, near Teres6polis, 

 USNM 97691-708, Sandig, March- April 1935. Petr6polis, USNM 101138, 

 B. Lutz and Cochran, May 1935. Teres6polis, BM 93.12.22.9-13 Goeldi; 

 USNM 96458-61, Lutz, Nov. 9, 1929. 



Crossodactylus dispar A. Lutz 



Plate 22, Figures c-e 



1923. Crossodactylus gaudichaudii (not of Dum6ril and Bibron) Miranda-Ribeiro, 



1923c, p. 828. 

 1925. Crossodactylus dispar A. Lutz, 1925a, p. 138 (type locality, mountains of 



the State of Rio de Janeiro [actually from Bonito in the Serra da Bocaina]) ; 



1926a, pp. 5, 12; 1931, p. 238. 



1930. Calamobates boulengeri de Witte, 1930a, p. 219, pi. 1, figs. 2-2, b (type locality, 



Alto da Serra, Sao Paulo). 



1931. Crossodactylus fuscigula (not of Fitzinger) A. Lutz, p. 238, pi. 65, figs. 14-16. 



Description. — Adult male, USNM 96739 (cotype of C. dispar), 

 Bonito, Serra da Bocaina, Rio de Janeiro, A very faint vomerine 

 ridge slanting inwards from the anterior borders of the choanae; 

 tongue very large, three-fourths as wide as mouth-opening, cordiform 

 and with a deep notch on its posterior border; snout rounded when 

 seen from above and in profile, the upper jaw extending considerably 

 beyond the lower; nostrils superolateral, scarcely projecting, one-half 

 the distance from eye to tip of snout, separated from each other by 

 an interval equal to 1% times their distance from eye. Canthus 

 rostralis prominent but rounded, the loreal region slanting outwards, 

 with a slight gi'oove on its lower border where it meets the upper lip. 

 Eye large and prominent, its diameter slightly less than its distance 

 from end of snout; interorbital diameter less than width of upper 

 eyelid, about two-thirds the distance between nostrils. Tympanum 

 large and distinct, one-half the diameter of eye, separated from eye by 

 an interval equal to three-fourths its own diameter. Fingers free, 

 their tips very indistinctly dilated, with scarcely perceptible furrows 

 separating two slight disks on top ; second and fourth fingers subequal, 

 reaching to base of penultimate phalanx of third; no trace of fringe 

 on margins of fingers (in this specimen) but distinct ridges on toes; 

 a large rounded palmar tubercle, and a similar one below the first 

 finger; subarticular tubercles prominent, single; a patch of three large 



