TTymenoptera of ihe Australian Region. 107 



Tn the male the genital armature is rather short and 

 robust, witli short incurved apical portion of the stipites, 

 tlie sagittal extending well behind these. Eighth ventral 

 segment with long, slender, median, apical process ; seventh 

 with well-developed lateral wings, and giving off at the apex, 

 on each side of the middle, two very long, curved, slender 

 processes. 



The general characters are as follows : — The propodeum 

 seen from in front is extremely short and bounded behind 

 by a rai>ed line or ridge, and within this area it is strongly 

 rugose in all the species known to me. Behind this it is 

 smooth, or comparatively so, over the rest of the anterior 

 area ( = basal area, enclosed space of metathcrax, &c., auct.), 

 which penetrates and (comparatively) widely separates the 

 latei'al elements of the propodeum by a wedge-shaped pro- 

 longation, which reaches nearly to the insertion of the 

 abdomen. Small details of neuration vary even in different 

 specimens of a single species, but the first recurrent nervure 

 either meets the first transverse cubitus or is received a very 

 short way within the second cubital cell. 



There are two very distinct groups in this genus, viz., that 

 of Prosopis husela, which like elegans has the ealcar of the 

 hind tibiae of the female armed conspicuously with out- 

 standing teeth or lamellate spines. In the male o( husela, at 

 least, the apical curved processes of the seventh ventral 

 segment are beautifully clothed with hairs. In the other 

 group, one species of which I have identified as Prosopis 

 disjnncta, these processes in the male are without the re- 

 markable vestiture, and the calcaria of the female are without 

 the spines. To the genus in its wide sense belong species of 

 very different superficial appearance, such as husela, which 

 greatly resembles a species of Eurijglossa described by me, 

 other red-bodied species, black species with yellow scutellum 

 and postscutellum, and species (except for small yellow 

 markings) altogether metallic. All agree essentially in the 

 peculiar features of the male terminal segments and genitalia, 

 and in the structure of the propodeum as described above. 



Euprosopis husela, Coekerell. 



Male genital armature rather robust, the apical pro- 

 longations of the stipites pilose, short and bent inwards, not 

 nearly so long as the wide basal portion, and not at all 

 membranous, the sagittse extending beyond them. Eighth 

 ventral segment with a long, slender, apical process, curved 

 ventrally, with a few feeble liairs at the sides, and a few 

 distinct ones on the narrow apical margin, the apex not 



