Genera of the Cossonidce. 545 
and of a deep black), and that a considerable reduction in 
the length of the scape is indicated (though to a less 
extent) in Himatium, I feel satisfied that the position in 
which I have placed it is a far more natural one than 
amongst the (more or less asperated, posteriorly-obtuse) 
types bordering on the Hylastidce. In addition to the 
characteristics above mentioned, Brachyscapus has its 
scutellum a good deal enlarged, and its under-wings 
considerably developed. 
50. Phlceophagosoma (Wollaston, Trans. Ent. Soc. 
Lond. 23. 1873). — The present genus is perhaps, on the 
whole, somewhat less satisfactorily defined than most of 
the others ; and I think it is far from unlikely that it may 
be found eventually to include more than a single type of 
form ; yet, being unwilling to multiply genera unneces- 
sarily, I have thought it better to treat it as admitting a 
rather wider amount of structural variation than would 
seem to be indicated in the neighbouring groups ; and we 
may possibly therefore regard it, in this particular respect, 
as somewhat analogous to Cosso7ius. It was established 
by myself, originally, to receive two slightly discordant 
species which had been collected by Mr. G. Lewis in the 
Japanese archijDelago ; and, if I am correct as regards the 
material now before me, I might define it as embracing a 
number of insects, sometimes a good deal differing from 
each other, which have a wide inter-tropical range, and 
which Avould seem, to at all events a certain extent, to 
represent the Phloeopliagi and Rhyncoli of European lati- 
tudes. Indeed a considerable proportion of them have, I 
think, done duty for the former, and are consequently still 
cited as such in the various catalogues ; but nevertheless 
they cannot, stiictly speaking, be associated Avith the 
Phloeophagi, any more than they can with the Rhyncoli, 
— as interpreted by the structural features of the respective 
(and universally-acknowledged) types of those two groups. 
Thus, whatever be their discrepancies inter se, they recede 
essentially from Phloeopliagus in having a largely developed 
scutellum, a comparatively elongate metasternum and pro- 
thorax, and in the second joint of their funiculus, and the 
basal one of their feet, being conspicuously more abbre- 
viated. Moreover they are, on the average, much larger, 
less ovate, and less convex, their rostrum is proportionately 
more lengthened, and their four anterior coxje are wider 
apart. , ^ 
