NEW ZEALAND COSSONID&. 489 
the thorax is more strongly rounded laterally and quite as braod 
as the elytra, and, though the smooth neck is distinctly marked 
off, the eyes seem a trifle less prominent, the snout is stouter than 
that of the female but not so broad as in the other sex of that 
species. 
Length, 1% ; breadth, 1% line. 
I found one near Parua. This species is substituted for P. 
punetatum, which on re-examination proves to be identical with 
Entium aberrans. 
Pentarthrum erenatum, n. sp.—Sub-depressed, moderately 
glossy, dark red, antennee and tarsi paler, pubescent. 
Rostrum cylindrical, slightly narrowed behind, bearing a few 
yellow hairs along the sides and front, distinctly punctured. 
Prothorax ovate-triangular, constricted in front, impressed along 
the dorsum, moderately coarsely and closely punctured, not 
rugose, sparingly clothed with fine but rather elongate yellow 
hairs. Scutellum smooth. L/lytra truncate at base, rather broad, 
parallel, rounded apically ; disc rather plane, striated, the strize 
crenate-punctate, interstices moderately broad, quite rugulose, 
the six inner attain the apices, these latter not in the least ex- 
planate. Legs moderate, tarsi stout, their penultimate joint 
sub-bilobed.. Aztenne pubescent. inserted medially, 2nd joint 
of the funicle decidedly longer than 3rd. C/zd rather narrow and 
elongate. 
This insect presents some peculiarities as compared with the 
true Pentarthra. The rostrum is intermediate in form between 
the two sexes of P. zealandieum; the eyes are depressed; the 
thorax is rather short, and the elytra are broader than it; the 
yellowish, brassy hairs are conspicuous. . The coarse punctation 
of the head ceases abruptly behind the eyes, leaving a broad 
smooth neck. 
Length, 1%; breadth, 3 line. 
Described from one example in my own collection, probably 
from the Waitakerei. 
Rhinanisus, n. gen.—Allied to Pentarthrum, distinguished 
from it by the vostrwm being evidently narrower behind the an- 
tennal insertion than its broad anterior portion, even in the 
female sex ; in the eyes being smaller and less convex ; and in 
the form being rather broad and sub-depressed, instead of being 
cylindrical as in that genus. 
The type is No. 912, now Rhinanisus fulvicornis ; Nos. 913 
and 923 become &. parvicornis and FR. contiguus respectively. 
Dioédimorpha, gen. nov.— Rostrum of variable length, rounded 
and dilated at apex and again.at antennal insertion; scvrodbes 
short, oblique, so that the scape in repose extends below and as 
far as the back part of the eye. Head large, sub-oblong, with a 
broad neck. yes small, depressed, distinctly facetted, antero- 
lateral. Antenne moderate, funiculus 5-articulate, club-ovate. 
Prothorax not greatly exceeding the head, sub-conical, Scutellum 
