118 



Journal New York Entomological Society. [Voi. v. 



not differ materially in the two species compared. Perhaps the lateral 

 pair of stylets are shorter, while the inner mesial parallel stylets are a 

 little longer, though these differences are only adopted provisionally. 

 Length of $ , .44; width, .24 inch. 



Both the 9 and 9 are of the same size (the latter only .02-.03 less) 

 and agree much more closely with the same states va fervidus than does 

 the $ . Still, however, the botly and limbs are a little more slender, the 

 mouth parts are shorter, and the head broader than vcs.fervidus. 



Average length of worker pupa .43 ; breadth .23 inch. 



Average length of female pupa .58; breadth .28 inch. 



One under-sized individual is .32 X .18. 



Bom bus separatus Cresson. 



Nest, Larva and Pupa. — This nest was found by Prof. Putnam, July 

 23d, under the grass, in a deserted field-mouse's nest, in a rather damp 

 situation. The active members of the colony were ten bees (no males 

 among them), which were captured and pinned. On examining the 

 nest I found that it consisted of t,6 cells, of which all but 23 contained 

 females and workers ; of the remaining 13, which were all worker cells, 

 two' contained pollen (or honey) closely packed; the rest were empty 

 and with the tops eaten off. The other 23 contained one worker in 

 the semipupa stage, ten worker larvae, one female larva, five semipu- 

 pal females and four female pupns. There were also 20 eggs and 1 2 

 young larvae in the masses of bee head which were found attached to 

 the sides or top of the queen cells, as shown in Fig. 13. When placed 

 on the top of a cell the bee head formed a rounded mass, which, on be- 



et 



Fig. 13. — Bombus separatus. a, cell with mass of pollen on top; b, one with 

 pollen enclosing two eggs; c, view from above; d, worker cell. (Author del.) 



