112 PACKARD, HUMBLE BEES 



dant species, being very rare in Maine, but growing more 

 abundant as we go southward. My specimens were col- 

 lected by Mr. Sanborn in the vicinity of Boston. 



Bombus terricola Kirby. 



Male. Head broad and short, eyes . narrow, as in 

 B. fervidus ; the front is a little broader than in that 

 species but the eyes do not. approximate so much 

 above : there are a few yellow hairs on the vertex, 

 and on the clypeus are a few yellow hairs mixed with 

 black. Front of the thorax yellow, as, are the sides; 

 beneath black; no yellow hairs on the scutellum. 

 Basal ring of the abdomen black, the second and third 

 rings yellow, the remainder black, with scattered tawny 

 hairs around the tip. Legs much as in the male of B. 

 fervidus, but the basal joint of the tarsus is more arcuate, 

 being broader in the middle, and narrowing more rapidly 

 towards the base ; they are black except the fuscous tarsi, 

 with long black hairs on the under side of the femora, and 

 the tips of the claws are black. Length, .65 ; breadth, 

 .32 inch. 



Compared with B. fervidus the antennae are nearly one- 

 fourth shorter, so that by this character it would be 

 easily mistaken for a worker, though the hairs are much 

 looser and more uneven than in the other sex. 



Female. Head very broad and short, eyes of moderate 

 width, much as in B. pennsylvanicus ; front black, dis- 

 colored with a few yellow hairs above and below the 

 antennas. There is a narrow line of black on the front 

 edge of the thorax ; behind, and extending as far as the 

 insertion of the wings, is a yellow band ; beyond, the 

 thorax and basal ring of the abdomen are black. Second 

 and third rings of the abdomen lemon-yellow, the hairs at 

 the base of each ring honey-yellow ; remaining rings 

 black with long loose fuscous hairs about the tips and on 

 the hind edge of the penultimate ring, the presence- of 

 which easily distinguishes this species from B. pennsyl- 

 vanicus ; beneath smoky black. Wings dark smoky, but 

 not so much so as in the other species. The legs are also 

 paler, but stouter with broader joints, while the femora 

 and the tibiae are black with smoky black hairs beneath. 



