Vol. XI] PRISON— PRIBILOF ISLANDS BUMBLEBEES 185 



HYMENOPTEROUS INSECTS OF THE FAMILY 



BREMID^ FROM THE PRIBILOF ISLANDS, 



ALASKA 



BY 

 THEODORE II. FRISON 



Urbana, Illinois 

 1. Bremus (Bombus) kincaidii (Cockerell) 



Among the insect material collected by Dr. G. Dallas Hanna 

 on the Pribilof Islands in 1920 are two specimens of this inter- 

 esting species of bumblebee. One of the specimens is a queen 

 and the other a worker. The queen was collected August 24, 

 1920, and the worker August 25, 1920, both on St. Paul Island. 



The species was first described from a series of queens, work- 

 ers and males, by Cockerell in 1898. In 1913 Franklin rede- 

 scribed the species from a queen and a male in the collection 

 of the American Entomological Society and a worker in the 

 collection of the United States National Museum. Ashmead, 

 according to the synonymy of this species as given by Franklin, 

 described the male as a Psithyrus. 



Cockerell in describing the species believed it to be "endemic 

 in the Pribilof Islands," saying "I cannot find any described from 

 the mainland or any of the other islands which agrees with it.'' - 

 Franklin, in 1913, gives the habitat of this species as the Pribilof 

 Islands. If Psithyrus kodiakensis Ashmead is a synonym of 

 B. kincaidii (Cockerell), as Franklin considers it, B. kincaidii 

 (Cockerell) is not endemic to the Pribilof Islands, for P. kodiaken- 

 sis Ashmead was described from two males collected July 20 at 

 Kodiak. Kodiak is situated on Kodiak Island and is very close 

 to the mainland of Alaska in the vicinity of the Aleutian moun- 

 tain range. Quite recently two papers giving records of Alaskan 

 bumblebees have been published, one by Salden (1919) and an- 

 other by Bequaert (1920). Neither of these two last-mentioned 

 authors reports B. kincaidii (Cockerell) as occurring in the collec- 

 tions from Alaska at his disposal. All this indicates that either 

 B. kincaidii (Cockerell) is endemic to the Pribilof Islands and 

 that Psithyrus kodiakensis Ashmead is wrongly placed in the 



