432 Suarp—On New Zealand Coleoptera. 
narrower than the elytra, rounded at the sides, and with a strongly constricted 
anterior part, flat, longitudinally depressed on the middle, rather closely but some- 
what indefinitely punctured, a little rough, with an obscure smooth space in the 
middle of the depression. Elytra elongate, shining, flat, with regular series of 
coarse punctures, the interstices not raised, impunctate. The female has the rostrum 
more cylindric in front, and shiming. 
Greymouth. Helms, No. 76. This distinct little species may be placed next P. parvicorne. 
Microrrisus. 
Microtribus pictonensis, n. sp.—Parum elongatus, fusco-piceus, subey- 
lindricus, rostrum breve, crassiusculum, punctatum, antennis brevibus, crassiusculis; 
prothorace crebrius fortiter punctato; elytris parum profunde striatis, stris fortiter 
punctatis. Long. rostr. incl. 8 m.m. 
Rostrum closely punctulate, dull; antennz inserted behind the middle, very 
short, with small slender club; eyes prominent; thorax rounded at the sides, and 
much narrowed in front, where it is only very obscurely constricted ; coarsely 
punctate; scutellum minute; elytra with series of punctures becoming more 
obsolete towards the extremity, but quite coarse at the base ; imterstices sparingly 
seriately punctate. 
Picton, Helms; one example. This differs from its only congener—M. huttoni—by its thicker 
rostrum and differently formed antenne, which are more like those of Pentarthrum: the insect, 
indeed, has much more the appearance of an obscure Pentarthrum than of its congener, but it is 
abruptly differentiated from the genus named by its approximate front coxe. 
Inosomus, Broun. 
Corpus breve, crassum, setosum; antennze breves, funiculo septem articulato ; 
rostrum breve, a capite sat abrupte discretum, oculis subinferioribus. 
This is a remarkably distinct genus, having the appearance of a Scolytid, but 
with a true rostrum and slender anterior tibiz not denticulate externally ; owing 
to the peculiar position of the eyes, which are not at all visible from the front, it 
would, perhaps, be placed in Wollaston’s arrangement of the Cossonidx, near to 
Himatium and Coptorhamphus, though it has really little connexion therewith, 
and is a great deal more like Stenoscelis. In the New Zealand list it may be 
placed before Xenocnema. The rostrum is rather longer than broad, furnished 
with true longitudinal scrobes, in which the scape is received; this attains the 
anterior margin of the eye; joints 2—7 of the funiculus are very short and 
difficult to count; the club is rather short and stout, obtusely acuminate, distinctly 
ringed, the larger basal joint being glabrous; on a slight inspection the insect 
appears blind, but the eyes are of moderate size, and are placed quite laterally, 
extending more to the under surface than the upper. The prosternum is 
emarginate, and the front coxe are minutely separated ; the middle coxze more 
