llO FAMILIiE. {^pis. •**. e, 2.) 



The females and neuters of these insects, it is 

 probable, do not, like the rest of the BombinatriceSf 

 carry masses of wrought pollen upon their hind- 

 legs, or they would have been furnished with a cor- 

 bicula for that purpose ; from the absence of the 

 pecten of the posterior tibia, and of the auricle at 

 the base of the planta, wliich are usually concomi- 

 tant? of the corbicula, we may conjecture that these 

 instruments, which are over against each other, are 

 given to the insects which have them, for the pur- 

 pose of preparing their little masses of pollen ; the 

 pecten, which consists of strong bristles, probably 

 breaking the grains, and the auricle assisting to 

 knead them into a paste, previous to their being laid 

 upon the tibia. It is remarkable that the females 

 and neuters of these ^pes, should exhibit those 

 characters which are peculiar to the males of the 

 rest of the family. I suspect that they nidificate 

 under-ground. 



To this subdivision belong v^. campestr{s(k), A. 

 Barbutella{l), A. vestaUs{m), and j4. rupestris{n) 

 of this work ; likewise, as I suspect, A. mystacea of 

 Christius(o), and ^. arenaria of Panzer (/)) . 



{k) Tom. 2. p. 335. (/) Ibid. p. 343. (rw) Ibid. p. 347. 

 («) Ibid. p. 369. (0) Hymenopt. p. 124. tab. 6. iig. 3. 



{p) Fn. Ins. Germ. Init, n. 74. tab, 12. 



ADDENDA. 



