MADETRAN COLEOPTERA. 141 
A, larger, and more parallel and oblong, than the following species 
(being of the same form as, though smaller than, the Clypeaster 
pusillus), as black and as shining as the A. piceum, but a little 
more evidently (though perhaps not quite so closely) punctulated, 
—the punctures on the elytra being (as in that insect) larger than 
those on the prothorax, though exceedingly shallow. Prothorax 
as in the picewm, but rather larger, and proportionably wider an- 
teriorly ; its hinder angles being, as there, a little produced and 
acute (a character which distinguishes them both from the C. pu- 
sillus). Elytra longer, and with the sides more parallel, than in 
the A. piceum, and with seldom any tendency to be diluted in 
colouring at their apex,—being in fact usually concolorous. Limbs 
longer than in the following species, and somewhat darker; and 
with the joints of the antenne from the third to the seventh (in- 
clusive) subequal, and excessively minute. 
Until I had dissected the present insect, I had regarded it as a 
small, dark, and lightly punctured variety of the Clypeaster pusillus, 
—which, in general outline and aspect, it much resembles. But on 
inspecting its trophi and limbs, and mounting them for the micro- 
scope, I at once perceived that it was a true Arthrolips,—its antenne 
being composed of only ten articulations ; whilst the subequal length 
of the first and second joints of its feet, and the form of its labial 
palpi and ligula (the latter of which is nevertheless a trifle smaller 
than in the A. picewm), still further proved it to belong unquestion- 
ably to that group. It recedes however from its ally, not only in its 
larger size, straighter outline, more ample prothorax, and longer 
limbs, but likewise (which is its most remarkable feature) in the 
proportions of its antennal joints,—the whole five of which (instead 
of merely three of them) between the second and the club are ex- 
tremely minute and subequal (the one adjoining the clava being per- 
haps, if anything, the smallest of them all) ; whereas in the A. piceuwm 
the third articulation is considerably elongated, and the seventh 
(adjoining the club) very much larger and thicker than the preceding 
three. The first and second joints, also, are far less robust than in 
that species,—the latter (which is, moreover, distinctly shorter than 
the former) being scarcely broader than the following (excessively 
minute) ones. 
I detected it abundantly at 8. Antonio, near Funchal, in the au- 
tumn of 1855, by brushing the coarse grass and vegetation in dry, 
semi-cultivated spots adjoining the Quinta dos Padres,—around the 
base of the Pico do Cardo: and specimens have been lately commu- 
nicated to me by Mr. Bewicke. It would appear to be commoner in 
Madeira proper than the A. picewm, occurring however in much the 
same localities as that msect. 
