354 Mr. Kinsv's Descriptions of 
Ihad put by this insect also, as a variety of A. Meliloti, but 
upon further inspectión I am convinced it is distinct: it is inter- 
mediate between it and A. angustatum, which should stand first 
in the series. From A. Meliloti, which it most resembles, it may 
be distinguished by having a rather longer rostrum, a more hairy 
body, eyes less prominent, elytra black with wider furrows, a 
longer scutellum, and no concavity between the eyes. From 
A. angustatum, with which it agrees in its plane front, hairy body, 
and sulcate elytra, it differs in those other characters which di- 
stinguish 4. Meliloti from that species. 
ADDITIONAL OBSERVATIONS. 
My learned and very ingenious friend, and coadjutor in an in- 
tended Introduction to Entomology, William Spence, Esq. F.L.S. 
whose eye nothing escapes, in a letter lately received, directed 
my attention to the trochanters (for by this name, in the work 
above alluded to, we have agreed to distinguish what 1 formerly 
called the second or femoral joint of the apophysis) in Apion as 
differently circumstanced from those of other Coleopterous genera; 
and upon examination I find that they are so fixed to the base 
of the thighs as to intercept them from coming at all in contact 
with the coxz (or my first joint of the apophysis); which circum- 
stance, although it invariably takes place in Hymenopterous in- 
sects, is observable in no Coleoptera that I have had an oppor- 
tunity to examine, not even in the cognate tribes of Curculionidae, 
or insects that have their antenne seated on a rostrum. ‘The 
general law in this order is for the exterior and longer angle of 
the base of the thigh at least, to touch the coza, if it does not in- 
osculate 
