00 P. CAMERON. HYMENOPTERA I. 



Polistes Latr. 



I. Polistes marginalis F. 



This species is représentée! by the forms maculipennis Sauss. from Manokwari. June 

 and Wendèsi and var. synoecus Sauss. from Manokwari. The former variety is the most 

 abundant. Both forms are variable in colouration. Cf. Schulz, Berl. Ent. Zeits. XLIX. p. 230 — 

 232 for remarks on the Papuan forms of P. maculipennis. 



2. Polistes maliyanus sp. nov. 



Manokwari, June. Several examples. 

 Black, the mandibles except the teeth, the lower inner orbits broadly, the yellow united 

 to an equally broad transverse stripe across the lower part of the front and the prothorax, 

 except the lower part of the base and the lower part of the pleurae, orange-yellow, an in- 

 terrupted line behind the ocelli, a broad one on the upper two-thirds of the outer eye orbits 

 and 2 irregular marks on the centre of the mesonotum, brownish-rufous; the abdomen dark 

 brownish-rufous; the whole of the i st , a broad band on the base of the 2 nd , dilated in the 

 middle and with a transverse projection there; and the base of the 3 ld narrowly, black. 

 Antennae rufous, slightly tinged with yellow. Legs black, the apex of the fore femora, of 

 the middle more narrowly, the 4 anterior tibiae and the 4 anterior tarsi, rufous tinged with 

 yellow. Wings hyaline, largely tinged with fulvous, the posterior lighter in tint, the apex of 

 both more or less violaceous; the stigma and nervures fulvous. 9 an d cf. 

 Length 20 — 23 mm. 



Ç. Clypeus as long as its greatest width, the apex gradually rounded to a bluntly 

 rounded point; the middle above transverse, the sides rounded. Malar space slightly longer 

 than the 4A antennal joint; the yi joint is nearly as long as the following 3 united. 



cf. Clypeus slightly, but distinctly longer than wide, the apex broadly, roundly pro- 

 jecting in the middle, and fringed with white hair; the sides roundly curved ; the top in the 

 centre roundly projects downwards, the sides roundly narrowed. The last joint of the antennae 

 is about one fourth longer than the preceding. The 4 front coxae are yellow below; the 

 fore femora entirely yellow below, the middle in front only ; the middle tibiae are for the 

 greater part black behind ; the tarsi are clear pale yellow. The last ventral segment bears 

 2 stout teeth, as long as they are wide at the base and with the apex rounded ; the space 

 between them is depressed. 



The amount of black on the 2 nd and following abdominal segments varies; the form 

 of the band on the 2 nd varies and may want the middle projection, the bands on the base 

 of the 3 rd and 4H1 vary; the 2 marks on the mesonotum vary; they are usually transverse 

 on the innerside, dilated in the middle on the outer, with the base and apex obliquely sloped. 

 Cornes close to P. rotlineyi Cam. and P. rufofemoratus Cam. from Northern India; 

 the former has the apical joint of the antennae in the çf compressée! and dilated laterally; 

 the colouration is différent; in the 9 the clypeus is much more strongly and closely punct- 

 ured, not yellow, but dark rufous and its apex broadly transverse. P. rufofemoratus has the 

 scutellum rufous; in its cf the clypeus is longer and it is transverse, not rounded, at the 



