32 HYMENOPTERA. 



very closely and delicately punctured, the tubercles, scutellum 

 and post- scutellum yellow ; the colouring on the scutellum waved 

 at the anterior margin ; wings subhyaline ; the marginal cell has 

 a narrow fuscous cloud passing along the costal nervure to the 

 apex of the wing; the second submarginal cell quadrate, re- 

 ceiving the first recurrent nervure about one-fourth within, the 

 second at its apex nearly uniting with the apical nervure. Ab- 

 domen shining, closely punctured, the basal segment most 

 strongly so. 

 Hob. Port Philip. 



Genus 10. HYLEOIDES. 



F. Smith's MSS. (Details, Plate II.) 



Head not so wide as the thorax, transverse, subtriangular in 

 front ; eyes lateral, elongate-ovate, narrowest at their vertex ; 

 the mentum shorter than the labium, which is produced at the 

 apex into elongate lobes rounded at their extremities ; the para- 

 glossse one-third shorter than the labium; labial palpi four- 

 jointed, the basal joint as long as the three following, and kaving 

 above a number of erect stiff hairs, the apical joint short, cylin- 

 drical. The maxillary palpi six-jointed, the basal joint very stout, 

 the two following subclavate, about the same length as the basal 

 joint ; the three apical joints of about equal length, and about 

 two-thirds the length of the third joint ; the stemmata placed in 

 a triangle on the vertex. Thorax ovate, the superior wings ha- 

 ving one marginal cell, one-fourth longer than the first submar- 

 ginal cell, the extreme apex rounded, and having a short appen- 

 diculate nervure ; the submarginal cells of about equal length, 

 the second widest at its apex. Abdomen elongate-ovate. 



1. HYLEOIDES CONCINNA. B.M. 



Vespa concinna, Fabr. Ent. Syst. ii. 263. 38 ; Cab. Banks. Mm. 



Linn. Soc. Syst. Piez. p. 259. 30. 

 Hob. New Holland; Port Philip. 



2. HYLEOIDES ZONALIS, n. s. B.M. 



Female. Length 5| lines. Black, the clypeus finely acicu- 

 late, and having a central yellow stripe, broadest at the base ; 

 mandibles very broad at the base, forcipate, deeply grooved ex- 

 teriorly, bidentate at the apex, apical tooth rounded ; antennae 

 subclavate, stemmata placed in a triangle on the vertex ; on each 

 side, close to the margin of the eyes, a smooth impressed line. 

 Thorax oval, the collar slightly interrupted in the middle, the 



