Genera of the Cossonidce. 553 
common, not only as regards its narrow, parallel, somewhat 
flattened, and very minntely sericated body, its elongated, 
slender rostrum, its greatly lengthened prothorax and 
metasternura (the former of which is very powerfully con- 
stricted in front), the conspicuously bilobed third joint of 
its feet, and the minuteness of its claws, but likewise in 
the smallness of its eyes, and in the curious tendency of 
its prothorax to be concave beneath. 
In other respects Stenotis is remarkable for its narrow 
and porrected head, for its intermediate coxte being not in 
the least degree more remote from each other than the 
anterior ones, and for its metasternum (which is remark- 
ably convex) being furnished on either side in front with 
a minute transverse plait (or perhaps, rather, a cluster of 
plaits), Avhich have somewhat the appearance of two 
roughened fovere. Its antennsB (which are medial in the 
males, but post-medial in the females) are rather long 
and slender, with their second funiculus-joint appreciably 
lengthened ; its scidpture is less coarse than in most of the 
immediately-allied gi'oups ; and its prothorax, as in the 
forms around Mesites and Cossonus, is widely channeled 
behind. Its type (the S. acicula, Woll.) is one of the 
rarest insects of the Madeiran archipelago, being found 
amongst the laurels at a high elevation, — on the folia(/e of 
which it appears to subsist. 
62. EUCOPTUS (nov. gen.'). — I am indebted to Mr. 
Pascoe for the loan of a female example, and to Mr. Fry 
for a male one, of the interesting little insect from which 
the characters for the present genus have been compiled. 
They are both of them South- American, — the former, 
judging from a label which is appended to it, having been 
captured (I presume by Mr. Bates) in the region of the 
Amazon, and the latter in Brazil (I believe near Rio 
Janeiro). In size and outward appearance Eucoptus has 
very much in common with such forms as Pentarthrum 
and Stenotrupis ; but its funiculus is composed of seven, 
instead of only five, joints ; and it is clear to me that its 
affinities, in reality, are with the types Avhicli cluster around 
Mesites, — particularly with the remarkable Stenotis acicula 
of Madeira. I have already called attention to the many 
characters which it possesses in common with that insect ; 
and I need here, therefore, only state that Eucoptus is 
conspicuous for its narrow, parallel, depressed, and piceous 
body (the elytra however being of a paler, or more rufo- 
