126 BULLETIN : MUSEUM OF COMPARATIVE ZOOLOGY. 



Corvus corax sinuatus Bktant, Proc. Calif. Acad. Sci., 2d ser., II. 1889, 293 (Cape 



Region). 

 Raven, Bryant, Zoe, II. 1891, 191 (San Jose del Cabo). 



Although the Raven is common throughout the Cape Region during the 

 entire year it is most numerous there in winter, according to Mr. Frazar. 

 Probably a good many migrants come down from the North at that season, or 

 the apparent increase may be due merely to concentration at points where 

 food is abundant. In December Mr. Frazar observed twenty or thirty gather- 

 ing nightly to roost in a tree on the summit of the Sierra de la Laguna. 



Mr. Bryant says that the Raven extends throughout " the entire peninsula 

 and shore islands." Its general range on the Pacific coast stretches from 

 Guatemala to Ala.ska. 



Molothrus ater (Bodd.). 



COWBIRD. 



A male Cowbird taken by Mr. Frazar at Santiago on November 22, 1887, 

 seems to be perfectly typical ater, which has not been hitherto reported from 

 any portion of Lower Califc^rnia. Mr. Belding gives several records of the 

 occurrence of this form in eastern California, but adds that " no Cowbirds have 

 ever been collected in California, west of the Sierra Nevada, as far as I am 

 aware." ^ M. ater is said to migrate into Mexico, but just how far to the 

 southward is not accurately known. 



Molothrus ater obscurus (Gmel.). 



Dwarf Cowbird. 



Molothrus ater obscurus Belding, Proc. U. S. Nat. Mus., V. 1883, 546 (San Jose del 

 Cabo), 547 (San Jose'). Bryant, Proc. Calif. Acad. Sci., 2d ser., II. 1889, 

 294 (San Jose' del Cabo). Bendire, Rept. U. S. Nat. Mus., 1892-1893, 1895, 

 698 (San Jose' del Cabo) ; Life Hist. N. Amer. Birds, pt. II. 1895, 441 (San 

 Jose del Cabo). 



This is the characteristic Cowbird of the Cape Region, where, however, it 

 appears to be comparatively uncommon and is not known to breed. Mr. 

 Frazar met with it only in autumn at San Jose del Cabo and Santiago, taking 

 his first specimen on September 30 at the former locality, where Mr. Belding 

 had previously noted it in April and May, 1882. Mr. Bryant does not appear 

 to have observed it to the northward, but says that Mr. Anthony " saw what 

 he supposes was this Cowbird at San Quintin." It is common in southern 

 Arizona, but is not known to enter California. 



1 Occ. Papers Calif. Acad. Sci., II., Land Birds Pacif. District, 1890, 118. 



