103 
base lightly sinuate on each side, the median part truncate and 
projecting slightly behind the marginal parts ; lateral margins 
broad and upturned behind, narrower in front, without reflexed 
border or setigerous punctures ; disc rugulose and punctate ; an 
arcuate transverse impression in front ; median line lightly 
marked. Elytra parallel, ovate, (8| x 5 mm.), costate ; the costie 
(8 on each elytron) shining, subequal, not strong or carinate, 
sparsely and very finely punctate, 8th rather obliterate on the 
sides, but conspicuous and strongly marked towards the apex ; 
base truncate, declivous ; apex subsinuate ; marginal border 
carinate, interrupted towards apex, extending on base to the 
peduncle,- more prominent, though rounded, at humeral angles; 
border of apex rising at end of lateral border, between it and 8th 
costa, in a short grooved carina, the inner edge of the groove ex- 
tending almost to the tips of the elytra ; a row of thinly placed 
shallow umbilical punctures on the sides between 8th costa and 
border. Under surface thinly covered with short hairs, these 
hairs placed in rugulose punctures on the legs and segments of 
abdomen. Anterior tibiae strongly bent on outer edge and very 
strongly excavate on inner side. Length 15, breadth 5 mm. 
Platynus papuensis, sp. nov. 
Male. — Black, shining ; undersurface, legs, and antenme pitchy 
black. I lead small, smooth, a faint impression on each side behind 
the suture ; clypeal suture not visible ; mandibles long, acute at 
apex, scrobe without a setigerous puncture; labruni prominent, 
truncate ; clypeus short with a setigerous puncture on each side ; 
eyes prominent; labial palpi with last joint shorter than penulti- 
mate, slender, narrowed to apex; maxillary palpi with last joint 
narrow, elongate, pointed, about equal to penultimate in length. 
Prothorax transverse, (U x 2| trim.), not convex, rounded on the 
sides, hardly narrowed behind, anterior margin broadly emarginate, 
bordered ; base with median part truncate, narrowly bordered ; 
anterior angles rounded, posterior angles rounded, but marked ; 
lateral margins narrowed in front, broad and upturned behind ; the 
usual lateral impressions of the base almost obsolete ; a setigerous 
puncture on the edge of the margin at each posterior angle ; 
median line very lightly marked. Elytra broader than prothorax, 
(5J x 3^ mm.), rather flat on the disc, declivous towards the sides, 
sinuate behind, finely striate ; the interstices fiat, equal, 3rd finely 
bi punctate on apical half, the punctures near the 2nd stria; 9th 
sparingly punctate, the punctures interrupted in the middle, an 
abbreviated stria near scutellum ; basal border arcuate behind, 
continuous with lateral border, this narrowly reflexed. Legs 
slender ; anterior femora short, thickened in the middle, canali- 
culate below ; anterior tibia) distinctly sulcate on outer side, apex 
with an acute spine projecting forward on inner side, and a shorter 
