84 BULLETIN 17 7, UNITED STATES NATIONAL MUSEUM 



^^ Color in alcohol. — Ground color drab-gray, tinged with olive-buff 

 on the legs; upper part of snout mouse-gray; a broad Y-shaped seal- 

 brown mark between the eyes, prolonged over the back into an irreg- 

 ular wide mottled area, edged laterally by a few small darker spots 

 and with a broken light mid-dorsal line down the center which forks 

 above the vent and continues down the back of the femur; lower 

 parts of sides mottled with mouse-gray, the upper lateral regions more 

 or less immaculate pale drab-gray; the swellings on each side of the 

 occiput also pale drab-gray; upper surfaces of imibs with wide gray 

 crossbars; ventral surfaces immaculate olive-buff, the soles of the 

 feet slightly suffused with gray; lips and loreal region pale-drab, 

 almost immaculate; a crescentic brown mark on the posterior border 

 of the tympanum, 



*'Paratypes. — Twelve topotypic spechnens (M.C.Z. 19,838-19,845 



and U.S.N.M. 95,418-95,421), eight adults and four young, show a 



great deal of color variation in certain respects. In three adults 



there are distinct round white (in alcohol) spots surrounded by dark 



reticulations. The other adults have a very fine and rather uniform 



brown or gray mottling, two of them with the merest trace of a pale 



dorso-lateral line, the other three without it. A similar diversity is 



found in the dorsal coloration of the four young frogs. A feature 



common to all, however, is the presence of the brown crescentic mark 



on the posterior run of the ear. In most of the specimens this mark 



begins behind the upper eyelid and ends above the shoulder. The 



narrow white lines on the posterior surface of the femur are also 



visible in most specimens and sometimes the narrow mid-dorsal line 



is apparent, at least posteriorly. One of the young frogs has the 



ventral surface finely mottled with gray; the others are nearly 



immaculate. " 



Genus LEPTODACTYLUS Fitzinger 



1826. Leptodactylus Fitzinger, Neue Classification der Reptilien, p. 38 (tj'pe, 

 Rana typhonia). 



The discovery of a member of this genus in Hispaniola established 

 one more bond linking the fauna of this island with that of Puerto 

 Rico, although the distinctness of the two species involved gives evi- 

 dence of the long physical separation of Hispaniola. 



LEPTODACTYLUS DOMINICENSIS Cochran 



Figure 28 



1923. Leptodactylus dominicensis Cochran, Journ. Washington Acad. Sci., vol. 

 13, No. 9, p. 184. — Schmidt, Scientific Survey of Porto Rico and the Virgin 

 Islands, New York Acad. Sci., vol. 10, pt. 1, pp. 24, 29, 38, 40; fig. 7, p. 39, 

 1928.— Barbour, Zoologica, vol. 11, No. 4, p. 80, 1930; vol. 19, No. 3, 

 p. 97; 1935; Bull. Mus. Comp. Zool. vol. 82, No. 2, p. 107, 1937. 



Original description. — "Type. — U.S.N.M. No. 65670, Las Calaitas, 

 Dominican Republic; February 25, 1923; Dr. W. L. Abbott, collector. 



