S. Mahunka szerk.: Folia Entomologica Hungarica 34/1. (Budapest, 1981)

Head transverse (3.5:2.5) rectangular, vertex impunctate, Inter-ocular punctures and others along inner margins of the eyes and on temples moderately large, eyes not very convex, a little larger than the temples, moderately Bhining, with transverse alutaceous microsculpture; antennae slender, basal five segments longer than broad, four and five shorter than previous, segments six and seven as broad as long, eight and ten slightly transverse, last segment a little longer than penultimate; setae more conspicuous on basal three segments. Pronotum as long as broad, with confused and broken microsculpture, anterior margin more convex, posterior corners more rounded, with short lateral bristles, with two rows of six punctures. Elytra as long as broad, moderately shining, with confused moderate puncturation, without microaculpture, with short dense lateral bristles, narrowly bordered at suture. Scutellum large, with alutaceous microsculpture and moderately densely and finely punctured. Abdomen finely, moderately densely punctured without mikcrosculpture, with scanty pubescence. Tibiae spinose, first segment of posterior tarsi equal to the three following together. Length 6.5-7 mm. Holotype 6" Goroka, 5.9.1971, paratypes (2 ex 8, 2 ex o) same data, paratype (1 ex 6*) Gor oka, 27.2.1973 (all from horse manure) (R. Hornabrook). Philonthus macnamarae Cam. Another locality: Gogol River, New Guinea, 11.1969 (R. Hornabrook). The three following species I originally placed in the genus Philonthus but with the superior lateral line of the pronotum deflexed in front, and the base of the tergites being much more coarsely punctured removes them to the genus Neobisnius Gange. Neobisnius madangensis sp.n. Completely black, except last one to three segments of the antennae which are ruscus. Head broader than long (4:3.5) transverse rectangular moderately shining, with a faint confused mieroeculpture, rather strongly but not densely punctured more ao on the anterior half; eyes not very convex, their longitudinal diameter half a.B long again as the length of the temples which have outstanding bristles, antennae with second segments shorter than the first and third, segments four to six shorter than the third but of equal length, segments seven to ten shorter, last segment longer than the penultimate, parallel-sided, asymmetrically acuminate at the apex; labrum with several slender bristles, four longer than the rest. Pronotum longer than broad (4.75:3.25), moderately shining, with an irregular row of seven to nine punctures and others laterally bearing slender setae; with a very fine alutaceous microaculpture, almost parallel-sided. Elytra a little longer than broad, broader at posterior margin, finely and densely punctured, with short pubescence, with about six outstanding short lateral bristles. Abdomen moderately shining, tergites, except the seventh and eighth, rather densely punctured more so at the base of each, with fine setae. Legs with short setae and a few spines of the tibiae. Length 8 mm (Aedeagus Fig. 13). Holotype S New Guinea, Muea 19.8.1975. Paratype p same data (light), paratypes (4 ex <j>) Madang, 31.5.1970, flood refuse in stream-bed (R. Hornabrook), Neobisnius mundus sp.n. Except that the male aedeagus differs from that of N. madangensis sp.n. the only other visible difference is that the pronotum is more densely and irregularly punctured and the apical segments of the antennae are black. Completely black, except tarsi and maxillary palpi which are fus eus. Head broader than long, moderately shining, without microaculpture, moderately strongly and irregularly punctured. Pronotum moderately densely punctured, leaving a median impunctate area from the anterior to the posterior margins. Elytra identical with N. madangenaia sp.n. Abdomen with tergites a little more finely and densely punctured than N. madangenBis sp.n. Length 6-7 mm, on an average a little smaller than N. madangensis sp.n. (Aedeagus Fig. 14). Type S, New Guinea, Zokoyoi River, Goroka, 6.6.1971, paratype ç same data, flood rubbish and shingle, paratype p, Kanu River, 31.10.1965 flood refuse (R. Hornabrook). Neobisnius filiue sp.n. This is very aimilar to N. madangensis sp.n. and N. mundus sp.n. It has the long antennae of the former but differs from both in having the puncturation of the elytra less dense and also the