. British bee journal & bee-keepers adviser. Bees. 462 THE BEITISH BEE JOUENAL. [Xov. 21, 1912. FURTHER NOTES ON THE PROCESS OF COLLECTING IN BOMBUS AND APIS. By F. W. L. Sladrn, (Assistant Entomologist fcr Apiculture, Division of Entomology, Ottawa, Canada.) The following are a few additional observations on the above subject that I .should like to place on record :— In pollen-collecting Bombi, I have often indeed, it does not extend so far; secondly,, the tips of the teeth form a convex curve, and, thirdly, the obstructing spur is absent. Indeed, both of the spurs at the end of t
. British bee journal & bee-keepers adviser. Bees. 462 THE BEITISH BEE JOUENAL. [Xov. 21, 1912. FURTHER NOTES ON THE PROCESS OF COLLECTING IN BOMBUS AND APIS. By F. W. L. Sladrn, (Assistant Entomologist fcr Apiculture, Division of Entomology, Ottawa, Canada.) The following are a few additional observations on the above subject that I .should like to place on record :— In pollen-collecting Bombi, I have often indeed, it does not extend so far; secondly,, the tips of the teeth form a convex curve, and, thirdly, the obstructing spur is absent. Indeed, both of the spurs at the end of the tibia are absent, and Apis is the only genus of bees in which they are not found. In both Bombus and Apis the inner side of the tibia is thickly covered with short, stiff bristles, excepting the region bound-. 7/7 ner S/ae. FIG. 1. Apis,S' found lumps of moistened pollen clinging to the hairs clothing the middle of the first ventral segment, which is raised consider- ably. It would seem that the pollen on its way to the hind metatarsi over this spot. I pointed out in a May issue of the "; that in Bombus the moistened pollen is normally found only on a small triangular portion of the metatarsal brush, situated in the corner of the metatarsus containing the auricle, and this is the only part of the brush that is scraped by the tibial comb. In Apis, on the other hand, the pollen is spread over the whole of the metatarsal brush, and the ^^^ tibial comb ap- pears to scrape the whole width of the brush. By reference to the accompanying Fig. 1, it will be seen that in Bombus, not only (lo the structure and shape of the comb render this instrument unsuitable for scraping the whole width of the brush —the teeth being weak, long and hair-like towards the articulating corner of the tibia, and the tips of the teeth forming a nearly straight line—but the inner spur s of the tibia Avould stand in the way of its doing so, except when the leg is stretched perfe
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