XYLOCOPA TEREDO. 
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lead us to apprehend that several of the kinds of 
Xylocopse, now regarded as distinct species, may ulti- 
mately prove identical, when we obtain as correct 
information regarding them as we possess in the pre- 
sent instance. The male (fig. 1,) is entirely tawny- 
yellow on the upper side, and blackish beneath; 
wings rather pale yellow, antennas yellow on the 
under side, legs likewise tawny, the hairs of the 
two anterior pair paler yellow. The female (fig. 2,) 
is deep black, the wings broad and of a brassy hue, 
with purple reflections. The difference between the 
sexes is not confined to colour, but extends likewise 
to form. The male is comparatively slender, the 
thorax oblong, and the head small ; the female has a 
very large head, and an orbicular thorax, the whole 
body appearing short and massive. These differences 
appear more conspicuous in Mr.W estwood’s drawings, 
from which the accompanying engraving is taken, 
than in Mr. Guilding’s figures ; but Mr. Westwood’s 
are carefully drawn from Guilding’s own series of 
specimens, which are now in the possession of the 
Rev. F. W. Hope, so that no doubt can possibly at- 
tach to the identity of the insects. It may he said 
that the evidence from which they are inferred to be 
the sexes of one species is not absolutely conclusive, 
for no one has ever witnessed their union ; but Mr. 
Guilding constantly found both of them in company, 
frequenting the same holes, the dark individuals being 
invariably females, and the other males, which affords 
so strong a presumption in favour of the opinion 
he formed, that little doubt on the subject can 
