104 BUULETIN 117, UNITED STATES IS^ATIONAL. MUSEUM. 



Family TURDIDAE. 



THRUSHES. 



(3508) PLANESTICUS SERRANL'S (TschudI). 



Turdus serranus Tschudi, Arch, fiir Naturg., 1844, vol. 1, p. 280 (Peru). — Beb- 

 LEPSCH and Stolzmann, Ornis, 1906, p. 73 (Idma). 



A female is apparently to be referred to this species. 

 Torontoy (9,500 feet), 1 female. 



(3511) PLANESTICUS LEUCOPS (Taczanowski). 



Turdus leucops Taczanowski, Proc. Zool. Soc, 1877, p. 331 (Ropaybamba, Peru). 



PLANESTICUS, species. 



A female from San Miguel Bridge and an unsexed immature speci- 

 men from Idma represent a species of the phaeopygus group unknown 

 to me. I trust that with the receipt of additional material I shall 

 be able satisfactorily to determine their identity. 



(3544) SEMIMERULA GIG AS GIGANTODES (Cabanis). 



Turdus gigantodes Cabanis, Joum. fiir Omith., 1873, p. 315 (Maraynioc, Peru). 



A Temperate Zone species. I have seen no topotypical examples. 

 Birds from northern Peru agree with those from the western and 

 central Andes of Colombia, which I have identified, therefore, as 

 gigantodes.^* The male listed below, however, is much blacker than 

 my darkest Colombian specimens and is practically as dark below 

 as above; in other words, it is an essentially hlack bird. The three 

 females, moreover, are much paler, about the color of Colombian 

 specimens. There is, therefore, apparently a sexual difference in the 

 Peruvian birds not found in the Colombian form. Cabanis's descrip- 

 tion is based on a female, and it will consequently require compari- 

 son with specimens from Maraynioc to determine the identity of 

 these south Peruvian birds. 



Occobamba Valley, 9,100 feet, 1 male, 3 females. 



(3548) SEMIMERULA CHIGUANCO (d'Orbigny and Lafresnaye). 



Turdus chiguanco d'ORBiGNY and Lafresnaye, Syn Av., pt. 1, 1837, p. 16 (Tacna , 

 Chile). 



This species is distributed from the Pacific coast to at least 14,000 

 feet, and in spite of this remarkable range it apparently shows no 

 geographical variation. 



San Miguel Bridge, 9; Torontoy, 2; Huaracondo Canyon, 1; Chos- 

 piyoc, 1; Ollantaytambo, 3; Pisac, 2; Calca, 3; Ttica-Ttica, 3; Cuzco, 

 1; La Raya, 1. 



CATHARUS, species. 



A female in juvenal plumage from the Occobamba Valley (9,100 

 feet) I am unable to identify. 



"Bull. Amer. Mus. Nat. Hist., vol. 36, 1917, p. 537. 



