HENRY J. FRANKLIN. 387 



middle of the second dorsal abdominal segment bearing yel- 

 low pile, their coloration thus being very similar to that of 

 this species. The two species do not seem to be closely 

 allied, however, because of the differences noted in the fol- 

 lowing table : 



Queen of B . alboanalis . Queen of B . hortormn. 



Malar space short, about one- Malar space long, one-half the 



fifth the length of the eye. Yel- length of the eye. Yellow patch 



low pile on the second dorsal ab- on base of second dorsal abdomi- 



dominal segment about covering nal segment about as in bimacu- 



the anterior half of the segment, latus. Black interalar band very 



Interalar band narrow. Occiput broad. Occiput dark, 

 variable in coloration. 



I have seen a few workers of B. montanus Lep., determined 

 by Gerstaecker, and that species seems to be very closely 

 allied to alboanalis, and it is possible that they should be con- 

 sidered as variations of the same species. I find no struc- 

 tural differences between them, and the only difference in 

 coloration of pile is that the black interalar band of montanus 

 is wider than that of alboanalis. B. mixtus Cress, seems to 

 be the closest New World ally of this species. 



True B. hortorum does not occur in the New World, and 

 it is probable that Smith's record of hortorum from Lake 

 Winnepeg should be referred either to this species, the 

 locality labels of Smith's specimens having been incorrect, 

 or possibly to B. mixtus. 



THE DUMOUCHELI GROUP. 



"The group of B. Dtimoticheli Radoszkowski, Bull. Soc. 

 Natural. Moscou, XLIX, P. I, 1884, p. 78. 



Type. — Bombiis dumoucheli Radoszkowski, ibid., p. 78, 9 

 d^, T. 3, fig.27. 



Characters of the Group. 



Females. — Pile rather coarse and of medium length ; head 

 elongate triangular in outline (fig. E); mandibles as in Pra- 

 torum group ,* malar space of good length ; clypeus more or 

 less strongly punctate ; hypopygium without median carina. 



Males. — Head (fig. F) elongate triangular, with long malar 



TRANS. AM. ENT. SOC, XXXVIII. 



