1877.] ¥ROM DUKE-OF-YORK ISLAND. 153 
far from New Ireland, and from Lifu, is said by Reiche to be identical 
with P. dimaculata (Guérin) from Penang. If I have rightly deter- 
mined the species, it is distinct, being much less coarsely punctured, 
especially on the thorax. 
ORYCTODERUS CORONATUS, n. sp. (Plate XXIV. fig. 5.) 
Oblongus, modice convexus, niger nitidus, capite subcrebre punc- 
tulato, thorace sparsissime punctato, transversim quadrato, 
angulis posticis late rotundatis ; elytris thorace haud latioribus, 
stria suturali excepta omnino levibus ; sternis castaneo-rujis, 
rufo-hirtis. 
3. Clypeo utrinque fortiter bisinuato (haud inciso), margine 
antico recto, paulo reflexo; fronte media unituberculata ; 
tarsis anticis ut in O. latitarsi incrassatis. 
Long. 18 lin. 
Closely allied to Oryetoderus latitarsis, and differing solely in the 
form of the margins of the clypeus, and the presence of a tubercle 
in the middle of the foréhead. A species (still undescribed) was 
taken by Wallace in the island of Goram, which presents also the 
character of a tuberculated forehead ; and I should have been inclined 
to regard both as varieties of O. latitarsis, if this latter species did 
not show itself so constant in its specific characters. The Goram 
species, besides being much smaller, differs in the nearly entire 
lateral margins of the clypeus. 
There is only one example in the collection, unless a female indi- 
vidual, 11 lines long,* be a small specimen ofthe other sex. 
DiPELicus NASUTUS, n. sp. (Plate XXIV. fig. 4.) 
Oblongus, convexus, crassus, supra castaneo-niger nitidus, subtus 
castaneo-rufus, rufo-hirtus ; capite levi, clypeo antice obtuse 
bidentato laminaque ascendente semiovata, apice late emar- 
ginata ; thorace sparsim subtiliter punctulato, haud excavato, 
sed sulco dorsali antice levi haud profundo ; elytris striato- 
punctatis striaque suturali magis impressa. 
Long. ¢ 18 lin. 
Allied to D. cantori, but distinguished at once by the vertical 
expansion of the clypeus being notched at the tip instead of entire 
and triangular. The singular dilatation of the terminal joint of the 
labial palpi, distinctive of this genus, is well developed, as is also the 
truncation of the dilated apices of the posterior tibiee and the long 
dilatation of the upper edge of the basal joint of the hind tarsi. 
One example only. 
SCAPANES AUSTRALIS, Boisd., ‘ Voyage de |’ Astrolabe,’ Coleop. 
p. 158, tab. 9. f. 4. 
Oue pair; more robust and with more coarsely punctured elytra 
than New-Guinea specimens taken by Wallace. The thoracic horns 
are parallel, instead of convergent towards the tips. If these dif- 
ferences prove constant when a large number of specimens are 
obtained, they may prove the present form to be a distinct species. 
