
MADEIRAN COLEOPTERA, 83 
stitiis remote et subtilissime punctulatis, antennis pedibusque fer- 
rugineis paulo longioribus robustioribus. 
Long. corp. lin. 14-12, 
T. subelliptical, but larger and more elongate than the following 
species, and rather more attenuated (in proportion) behind, red- 
dish-brown, and densely clothed with a decumbent yellowish- 
cinereous pubescence, Head and prothorax regularly punctulated: 
the former with the forehead distinctly bicostate, and with the 
eyes large, convex and entire,—there being no indication of a 
groove across them. lytra very finely striated, and with the 
striz almost impunctate (the punctures being only just perceptible, 
and very remote from each other, even beneath the microscope) ; 
with the interstices distantly and very finely punctulated; and 
with scarcely any tendency (even behind) to have the pubescence 
disposed in longitudinal rows. Limbs ferruginous; rather longer 
and more robust than in the following species, and with the club 
of the antenne larger and more abrupt. 
The present Zriwagus (which is an addition to our Catalogue since 
the publication of the Insecta Maderensia) I had regarded, until my 
recent examination of it, as the common European 7’. dermestoides, 
to which in general size and aspect it closely approximates. A 
careful investigation of its characters, however, has convinced me that 
it is truly distinct from that species, possessing many small peculi- 
arities (some of them even structural ones) which can scarcely be the 
result of either climatic or any other local influences to which it may 
have been long exposed. Thus, its frontal cost are much further 
apart, or (which is the same thing) are situated nearer to the inner 
margin of the eyes, than is the case in that insect; and the eyes 
themselves are much larger, more convex, and entire,—being free 
from any indication of the central groove + which is so well expressed 
(though it does not extend completely across them) in the 7’. der- 
mestoides, and which is still more developed in the gracilis. Then, it 
is more attenuated posteriorly than its European ally, its elytral 
striz and interstices are much less evidently punctured, and its 
pubescence has scarcely any tendency to be disposed in longitudinal 
rows. Three specimens of it were detected by myself, amongst rotten 
wood, in the remote forest region of the Lombo dos Pecegueiros (in 
+ This curious tendency which the eyes of the Trixagi possess, of being im- 
pressed across their central region by a furrow, or groove (which is tolerably 
deep near the insertion of the antenne, but which becomes gradually shallower, 
and disappears altogether before reaching the opposite portion of the circum- 
ference), I have not seen anywhere alluded to; and I may refer to a notice of 
my own, lately published in the Proceedings of the Entomological Society of 
London, on the subject. 
G2 
