Genera of the Cosso)iidce. 523 
to establish the present genus have been communicated by 
Mr. Janson, and are from British CafFraria in southern 
Africa. In their fusiform outhne, piceous hue, shining, 
unpube.scent surface, and obsolete scutellum, they are at 
first sight ver'y similar to Mesoxenus (now merged into 
Amaurorrliinus^ ; nevertheless the fact of their eyes 
(although minute) being present, instead of obsolete, 
throws them into a different, though proximate, section 
of the Pentarthrides. And, when closely inspected, they 
Avill be seen, further, to recede from AmaurorrhiJius, not 
only in their relatively narrower body and more elongated 
prothorax and elytra, but likewise in their shortei% broader 
and more parallel rostrum, into which their very much 
more abbreviated antennas are implanted further from the 
a]3ex, in their legs (the front and hind pairs of which are 
a trifle more approximate at their respective bases) being 
also shorter, in their metasternum being appreciably more 
elongated, and (together with their first abdominal seg- 
ment) less scooped-out, or concave, and in the third joint 
of their feet bein^ more decidedly simple. 
26. Heteropsis (nov. ffen.). — I am indebted to Dr. 
Sharp for the remarkable little Cossonid for which the 
present genus is proposed, and which was captured at 
Auckland in New Zealand by Mr. Lawson, — after whom 
I have had much pleasure in naming the species. Its 5- 
jointed funiculus and obsolete eyes (which are minute, 
sunken, and very rudimentary) place it near to Amnuror- 
rhinus ; nevertheless it differs from the latter, and the 
cognate forms, in having a developed scutellum ; whilst 
in its extremely short and broad rostrum (particularly of 
the male sex), which is a little contracted posteriorly and 
is divided from the head by a distinct frontal line, anjl its 
abbreviated, abruptly-clavate scape, it possesses features 
which are essentially its own. In other respects, Hete- 
ropsis is conspicuous for its small size, and its narrow, 
cylindrical, but somewhat depressed body, for its shining, 
l^iceo-castaneous surface (which is very lightly sculptured 
anteriorly), and for its rather short legs and elongated 
metasternum. 
27. Amaueorrhinus (Fairmaire, Ann. de la Soc. Ent. 
de France, 629. 1860). — Although the exceedingly short 
and imperfect diagnosis which M. Fairmaire has given of 
TRANS. ENT. SOC. 1873. PART IV. (OCT.) P P 
