THE CANADIAN ENTOMOLOGIST. 277 



SYNOPSIS OF BEES OF OREGON, WASHINGTON, BRITISH 

 COLUMBIA AND VANCOUVER.— IV. 



by h. l. viereck, assisted by t. d. a. cockerell, e. s. g. titus, j. c. 

 crawford, jr., and u. h. swenk. 



Ceratinid.«. 

 Cerah'na, Latr. 

 Ceratma siibmaritima,Q\\\.—Vxoc. Acad. Nat. Sci., Phila., p. 352, 

 1897. 



Corvallis, Or , ? 9 , 29th May, 4th June, 1S97 ; 24th, 25th May, 7th 

 June, 1898; $ i, 15th May, 1897; 25th, 27th April, 7th May, 1898; 

 2ist May, 3rd, 9ih June, 1899. Elklon, Or , 9 $ and ^$, 17th 

 January, 1897. 



DUFOUREID/E. 



Halidoides, Nyl. 

 Halidoides campanulcB, Ckll. — Can. Ent., XXIX, p. 289, 1897. 

 Olympia, Wash., 30th June ; 24th June, 1895 (T. Kincaid). Visits 

 the flowers of Campanula scouhri. 



Panurgid^. 

 Panurginus, Nyl. 

 Panurgimis atriceps (Cress.)— (Calliopsis) Trans. Am. Ent. Soc, 

 VII, p. 67, 1879. 



Seattle, Wash., ist July, 1899; 13th, 20th, 28ih May to 2nd June, 

 1896. ^, Seattle, Wash., 14th May, at flowers oi Rubus itrsinus. 



Per d it a, Sm. 

 Perdita albipefmis, Cress. — Trans. Am. Ent. Soc, I, p. 386, 1868. 



Wash. Received three, Mr. Lovell. 



Prof. Cockerell says that this species follows the sunflower, and that 

 its appearance in Washington is, for this reason, not astonishing. 



Calliopsis, Sm. 



Face entirely black ; abdomen with a spot on each side of the first two 

 segments, a broadly interrupted band on the third, and an almost 

 continuous band on the fourth, white personatus. 



Face with an almost quadrate yellow mark between the eye and clypeus, 

 this mark with a linear prolongation up along the eye margin to a point 

 on a line with the insertion of tlie antennse ; first four abdominal 

 segments with transverse bands, which are linear except laterally, where 

 they are broad and sinuate obscurdlus. 



August, 1905 



