87 [Vol. xx\-. 



unrecorded from the Island of Formosa, had likewise been 

 procured on Mt. Arizan by one of Mr. Owston's Japanese 

 collectors. This interesting and distinct species had been de- 

 scribed by Mr. McGregor [Bull. Philippine Mus. no. 4, p. 9 

 (1904)] from Calayan, one of the islands of the Babuyan 

 Group, north of Luzon. Its reappearance in Formosa was 

 therefore not altogether surprising. 



Mr. C. E. Hellmayr sent descriptions of two new races 

 of Neotropical birds, which he proposed to call: — 



CoRAPIPO LEUCORRHOA HETEROLEUCA, Subsp. n. 



Adult male. In the shape of the wing this form agrees with 

 C. 1. altera, Hellm. (Bull. B. O. C. xvi. p. 84, 1906: type 

 from Carrillo, E. Costa Rica), but is very easily distinguished 

 by the different form of the white throat-patch, the posterior 

 edge of which is deeply indented medially towards the chin. 

 In C. I. altera this patch is posteriorly truncated in a nearly 

 even line. Wing 58-61 ; tail 32-33 mm. 



Adult female. Not distinguishable from the female of 

 C. I. altera. 



Hab. Chiriqui (Boquete, Frances, &c.) and South-western 

 Costa Rica (Pozo Azul Piris, &c). 



Type in the Munich Museum : J . Boquete, Chiriqui, 

 3500 feet, 17. xii. 04. Collected by H. Watson. 



Obs. W T hen describing C. I. altera I did not distinguish 

 between the birds from Chiriqui and those from Eastern 

 Costa Rica. I am much indebted to Mr. Clyde E. W. Todd, 

 of the Carnegie Museum, Pittsburgh, for drawing my atten- 

 tion to this obvious error. According to our present know- 

 ledge, three geographical forms of C. leucorrhoa may be 

 recognized :— 



(a) C. leucorrhoa leucorrhoa (ScL). Colombia (Bogota, 



Bucaramanga; Primavera, Cauca Valley). 



(b) C. leucorrhoa altera, Hellm. Eastern Costa Rica 



(Carrillo). 



(c) C. leucorrhoa heteroleuca, Hellm. S.W. Costa Rica 



and Chiriqui. 



