I 
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 in fervidus than does 
the $. Still, however, the body and limbs are a little more slender, the 
mouth parts are shorter, and the head broader than in 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. 
Bombus 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 36 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 pupae. There were also 20 eggs and 12 
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- 
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 .) 
