562 Mr. T. Vernon "NVollastou on the 
conspicuously biflexuose) have their apical cavities, for 
the reception of the tarsi, unusually large and open ; and 
the latter (as in most of these immediately-allied forms) 
are remarkably short and incrassated, with the third joint 
deeply bilobed, and the ultimate one abbreviated and 
conical. The prothorax and elytra are very distinctly 
margined at their resjDCctive bases (the latter of them 
likewise at the apex) ; and, as in the neighbouring groups, 
the antenuEe are thick, with the second funiculus-joint 
much reduced in length, and the club narrow and acumi- 
nated. 
75. PsEUDOCOSSONUS (Wollaston, Trans. Ent. Soc. 
Lond. 27. 1873). — The genus Pseudocossonus was 
founded by myself a short time ago to receive two insects 
which Avere captured by Mr. G. Lewis in Japan ; and a 
third exponent is now before me, from the collection of 
Mr. Pascoe, Avliich Avas obtained by Mr. Wallace at Dorey 
in New Guinea. There can be no doubt, I think, that 
its affinities are with such forms as Catolethrus and Phace- 
f/aster, from America ; though still more so Avith Exonotus, 
from the ]\Ialayan archipelago, and the Indian Catolethro- 
morphiis — Avith Avhich it agrees in its rostrum being more 
parallel, and not divided from the forehead by a basal line, 
as Avell as in the fact of its eyes being rounder, more promi- 
nent, and more Avidely separated, in its prothorax being 
perfectly even (or free alike from keel and depression), in 
its elytra being entire at their extreme apex, and in its four 
posterior coxie (instead of the four anterior ones) being 
equidistant. As in most of the allied groups, the tibire of 
Pseudocossonus are fm*nished at their inner angle Avith a 
rather robust spinule ; and the feet are abbreviated and 
thick, Avith the third joint bilobed, the terminal one very 
short and conical, and the claAvs exceedingly minute. 
Indeed this shortness of the tarsi is even still more ex- 
pressed in Pseudocossonus than it is in any of the genera 
to AAliich I have above ahuded, — the basal and idtimate 
articulations being greatly reduced in length. Its body is 
shining, nearly parallel, and slightly depressed ; and the 
sculpture anteriorly and underneath is somewhat fine. 
Although usually dark, its elytra (Avhich do not appear 
to be margined at their extreme base, or at their apex) 
are occasionally rufo-castaneous, especially in front, — a 
peculiarity of coloration Avhich is equally indicated in 
Exonotus. 
