554 jNIr. T. Vernon AVollaston on the 
castaneous, hue), which at fii'st sight appears to be per- 
fectly baki, but which when viewed beneath a high magni- 
fying power will be seen to be very miniitely and spar- 
ingly sericeous ; for its rostrum (which is just appreciably 
widened towards the apex) being elongated and slender in 
the female sex; for its antennre being implanted into the 
latter considerably behind the middle ; for its rather por- 
rected head and depressed eyes ; for the sharpness, and 
fineness, of its sculpture ; for its limbs (particularly the 
hinder legs) being somewhat short, its club rather narrow, 
and its third tarsal joint bilobed ; for its prothorax and 
raetasternum being a good deal lengthened ; and for the 
first and second segments of its abdomen (the former of 
Avhich, in the male sex, has, apparently, a large and 
rounded tubercle in the centre) being separated from each 
other by a iz-arcuated line. Its jirothorax is free from 
a longitudinal groove ; and its elytra have their strife 
nearly simple, and the interstices somewhat transversely- 
reticulated. 
63. Mesites (Schonherr, Gen. et Spec. Cure. iv. 1043. 
1838). — A very careful examination of the various sjiecies 
from the ISIadeiran, Canarian, and Cape-Verde archi- 
pelagos, which I have hitherto referred to Mesites, has 
convinced me that they connot properly be admitted into 
that group — as repi'csented by its European members, of 
which the M. palUdlpennis is the universally-acknow- 
ledged type ; and therefore I have no choice but to restrict 
Mesites to the particular insects (namely the M. pallidi- 
pennis and cunipes, and the more recently enunciated 
M. aquitanus^ which it Avas originally intended to embrace, 
— the M. Tardii, of western Europe, belonging manifestly 
to one of the Atlantic tj^ies. 
As thus understood, Mesites may be said to differ from 
its more immediate allies (comprised in the two following 
genera) in its body being more parallel, cylindrical, and 
convex, as well as somewhat more shining ; in its pro- 
thorax being more strictly ohiong (instead of subtriangu- 
lar) ; in its head being more incrassated, and with the 
eyes wider apart ; in its male rostrum being shorter, and 
relatively more robust and linear, — it being less appre- 
ciably Avidened at the insertion of the antennaj ; in the 
latter being much thicker and more abbrcAaated, particu- 
larly as regards their scape (AA'hich is likcAvise more out- 
Avardly curved) ; in its funiculus (the second joint of which 
