354 THE BEE-KEEPER’8 MANUAL. 
ferent structure of the antennz, at once prove to the entomo- 
logist that these two insects are not only not the same, but 
that they belong even to different orders. They are, however, in 
all probability found together, like the other bees and Diptera 
which so strongly resemble each other—the larva of the Diptera, 
no doubt, preying upon the larva of the bee. In proof of this 
hypothesis, it may be stated that both specimens were brought 
to England from the coast of Africa—the hee from Sierra 
Leone, the bee-fly from Port Natal—and probably both will 
eventually be found in the same district. The last, the bee- 
fly, is at present an entomological novelty, and has not yet 
been named. The bee exhibits, in an unusual degree, a peculi- 
arity common to many of the family, namely, a marked dif- 
ference in the general aspect of the two sexes, the male being of 
a light tawny brown colour, and having a much longer body, a 
characteristic which generally distinguishes the female rather 
than the male. It would be interesting to know whether in the 
bee-fly, which bears so extraordinary a resemblance to this fine 
bee, an equal disparity of appearance exists between the two 
sexes; but, as we have at present only a solitary specimen of 
this insect, that is a point which cannot be decided; but other 
specimens will doubtless be captured, which may enable us to 
solve this interesting entomological problem. 
In concluding my remarks on curious resemblances between 
“bees” and various kinds of two-winged “flies,” I may mention 
a curious instance of resemblance between a dipterous insect 
and one of the wasp tribe (Vespide). Humenes esurtens, a 
small Indian wasp, found in Bengal, has its counterpart (the 
resemblance being truly extraordinary) in Cesia eumenordes, 
the specific name of which has been conferred upon it in 
consequence of this singular resemblance. I ought also to 
mention, as a case in point not the least singular, that a British 
dipterous insect of the Syrphus tribe, belonging to the genus 
Eristalis, is so like the common hive-bee, that it would, at a 
glance, deceive any observer untrained as an entomologist. 
