﻿MAMMALS OF NORTHERN COLOMBIA — HERSHKOVITZ 371 



Bolivia: Buena Vista, Santa Cruz, 3 (C.N.H.M.); San Carlos, Santa 

 Cruz, 1 (C.N.H.M.). 



SYLVILAGUS BRASILIENSIS GIBSON! Thomas 



Lepus brasiliensis, Matschib, Ges. naturf. Freunde Berlin, 1894, p, 62 (Tucumdn; 



Jujuy). 

 Sylmlagus brasiliensis, Eisentrout, Zeitschr. fvir Sauget., vol. 8, p. 56, 1933 



(Villa Montes, Tarija, Bolivia), 

 Sylvilagus brasiliensis gibsoni Thomas, Ann, Mag. Nat. Hist., ser. 9, vol. 1, p. 192, 



1918; vol. 5, p. 195, 1920 (Villa Carolina, Jujuy); vol. 15, p. 581, 1925 (Cara- 



pari, Bolivia); vol. 17, p. 608, 1926 (Cerro del Campo, Burruyacu, Tucumdn). 



— Krumbiegel, Zool. Anz., vol, 137, p, 26, 1942 (Salta). — Marini, Agrono- 



mfa y Veterinaria (Rev. centro estudiantes, Univ. Buenos Aires), vol. 23, p. 



339, 1930 (descriptions, discussions, etc., from literature). 

 Sylvilagus brasiliensis paraguensis, Yepes (nee Thomas), An. Soc. Argentina 



Estud. Geogr., vol. 6, p. 55, 1938 (Chaco and Formosa, Argentina). 

 Sylvilagus (Tapeti) brasiliensis paraguensis, Krumbiegel (nee Thomas) Zool. 



Anz., vol. 107, p. 27, 1942 (part; Villa Montes, Tarija, Bolivia.) 



Holotype. — Male, sldn and skull, B.M. No. 18.1.1.8; collected July 

 25, 1917, by E. Budin. 



Type locality. — Manuel Elordi, Vermejo, Salta, northern Argentina; 

 altitude, 500 meters. 



Distribution. — Northern Argentina from the Rio Paraguay-Parand 

 to the eastern portions of Tucumdn, Jujuy, and Salta, north into 

 Tarija, Bolivia. 



Characters. — Grayer, with less black mottling dorsally than para- 

 guensis; crown at anterior base of ears with large grayish patches. 



Remarks. — The dark collar between forelimbs said to be little more 

 than an inch in anteroposterior diameter in the type, is not distinctive. 

 Width of collar varies with the method of preparing the skin. In many 

 skins the collar has been found to be nearly completely suppressed by 

 the preparator. A specimen each from Yacuiba, Bolivia, and from 

 near Riacho Pilaga, Formosa, in the Argentine Chaco, agrees with 

 gibsoni in diagnostic characters. 



A tapiti (not seen) collected by Budin in Carapari, about 35 km. 

 northwest of Yacuiba was assigned by Thomas (supra cit.) to gibsoni. 

 A subadult at hand collected by A. G. Maddren in the Rio Carapari 

 Valley 18 Ion. south of Carapari agrees with paraguensis. This 

 individual, from the typical region of gibsoni may be aberrant. 



Specimens examined. — Four. Argentina: The type (B.M.), 10 

 miles northwest of Riacho Pilaga, Kil6metro 182, Formosa, Argentina, 

 1 (U.S.N.M.). Bolivia: Yacuiba, Tarija, 1 (C.N.H.M.); Rio 

 Carapari, 10 miles south of Carapari, Tarija, 1 (C.N.H.M.). 



