Atlantic Coleoptera. 241 
in most) the spinule is more or less decidedly expressed 
in the anterior ones likewise. But whilst recording this 
fact, I distinctly expressed my belief that perhaps two 
species might nevertheless be concealed under the “ 7’. 
tnornatus” as then limited,—seeing that all the specimens, 
some thirty in number, which I had taken in the south 
of Madeira (where they occur, for the most part, beneath 
the bark and chippings of Spanish-chestnut trees and 
Firs on the mountains above Funchal) were not only a 
hittle smaller and narrower, but had their antenne just 
perceptibly shorter, than those from the interior and 
north of the island; whilst at the same time the still 
more remarkable circumstance remained that the whole 
of these southern individuals (so far at least as the mere 
fact of their feet being simple enabled me to judge) 
appeared to be females ! 
Now it is this particular form (from the mountain- 
slopes in the south of the island), which appears to have 
its feet simple in both sexes, and which I admitted re- 
luctantly into my emended diagnosis of the inornatus in 
1857, that I have enunciated above under the title of 
lutulentus ; and I will distinctly state that were it not for 
the apparent similarity of the male and female tarsi, I should 
scarcely perhaps have regarded it even now as more than 
a small and depauperated variety of that species. Yet 
the fact (if true) is so structurally important that I can- 
not but lay greater stress, in consequence, upon certain 
other minute characters which per se I might have looked 
upon as insignificant—even though they are sometimes so 
faintly appreciable that specimens are with difficulty 
separated from female ones of the inornatus. Indeed 
(apart from its feet) the lutulentus would seem mainly to 
differ from the inornatus in being on the average a little 
smaller and narrower (its length ranging from 14 to 2 
lines, whereas that of the latter ranges from 2 lines to 
24), a trifle less coarsely sculptured, and beset with, if 
possible, even shorter setze still, in its prothorax being 
just appreciably (in proportion) less widened in front, in 
its alternate elytral interstices having a still less tendency 
to be obsoletely raised and interrupted (being, in point 
of fact, almost simple), and in its antennz being if any- 
thing a little shorter, and its legs usually somewhat less 
darkened. 
That the tarsal character however of the lutulentus is a 
real one appears more than probable from the fact that 
