P. CAMERON. HYMENOPTERA I. 6l 



apex. P. diabolicus Sauss. is probably closely related; but after a careful comparison of the 

 description and figure of that species given by SAUSSURE, and the more detailcd one given 

 by Mr. W. A. SCHULZ, Berl. Entom. Zeitschrift, XLIX, p. 229 of the rf it seems to me 

 that tny species must be distinct. Thus, according to SCHULZ, the last antennal joint in the cf 

 is „etwa i'/ 2 mal so lang als das vorhergehende Glied". 



3. Polistes albobalteatus sp. nov. 



Manokwari, February. One example. 



Black, a mark, longer than broad, transverse above and below, on eitherside of the 

 clypeus in the middle, a line, dilated below, on the centre of the inner orbits, a line on the 

 centre of the outer orbits, more than the apical half of the post-scutellum, a curved line on 

 the sides of the apex of the metanotum, complète narrow lines on the apex of the basai 3 

 abdominal segments, and a line on the centre of the apex of the 4*, white. Wings hyaline, 

 the radial cellule broadly smoky in front, the nervures and stigma black. 9 or cf. 



Smooth, the head and thorax densely covered with pale pubescence. The front and 

 clypeus with scattered punctures, the latter more shining than the former. Clypeus as long 

 as it is wide, the middle above with a rounded incision, almost twice wider than long, through 

 the face projecting into it. Mandibles inclining to brownish towards the apex. Metanotum 

 very indistinctly striated ; the centre with a deep, wide, furrow, with obliquely sloped sides. 



The apex of the clypeus is sharply pointed ; below the white line on the outer orbits 

 is an irregular white spot ; the antennae are narrowly brownish at the base and much more 

 broadly at the apex. 



Length 7 mm. 



Icaria Sauss. 



1. Icaria zonata sp. nov. 



Moaif, Juni and Juli. MÔso, May. 



Black, a large mark on the sides of the clypeus, roundly dilated on the outerside, 

 contracted on the inner and narrowed above, a broad line on the inner orbits, extending 

 from the clypeus to the top of the eye incision, a mark above the antennae, obliquely nar- 

 rowed above, a broad line, narrowed above, on the outer orbits, a broad mark slightly nar- 

 rowed above, on the base of the propleurae, an oblique mark on the sides of the scutellum, 

 the post-scutellum, the metanotum, a large, oblique line, about 3 times longer than wide and 

 rounded below on the base of the mesopleurae above, a similar one on its apex below. a 

 broad line on the apex of the first abdominal segment, a narrower one on the second and 

 a still narrower one on the third, pale yellow. Legs black, the 4 anterior tibiae and the tarsi 

 fuscous in front; the base and apex of the hind tibiae in front testaceous. Wings hyaline; 

 the radial cellule smoky, the nervures and stigma black. Mandibles piceous, darker at the base. Ç 1 . 



Length 9 mm. 



Front and vertex not very shining, covered with a pale down and sparsely, distinctly 

 punctured ; the clypeus is more shining, especially r at the apex and less strongly punctured. 

 its apex is brought to a sharp point. Malar space minute. Mesonotum opaque, granular; a 



