108 Dr. R. C. L. Perkins on Acuhate 



dilated nor in any way i)eculiar. Scvcntli segment witii 

 large lateral wings, ciliated at the sides, the apex of the 

 segment in the middle giving off two very long, outwardly 

 curved, subfiliform processes, beautifully hairy and slightly 

 dilated at their apices. 



Prof. Cockerel! thinks that E. husela, elegans, and its var. 

 huseloides may be all forms of one species, but husela is 

 easily distinguished from elegans var. huseloides by the meso- 

 notal puncturation. Both seem very constant except in 

 neurational characters. The latter has a dense and almost 

 rugose puncturation of the hinder part of the mesonotuni 

 in the middle, while in the former the punctures are much 

 less close and leave considei'able smooth spaces of surface 

 between them. 



1 have seen very large numbers of E. husela from various 

 localities, but comparatively few of elegans var. huseloides 

 and all from Townsville. I have not seen the male of the 

 latter, unless it be a form structurally the same as P. rollei. 



Hyl^oides, Smith. 



The Prosopid bees of this genus have a facies entirely 

 their own, resembling Australian Eumeuid wasps of tlie 

 genus Alastor. Apart from their coloration, this resemblance 

 extends to the remarkable structure of the second ventral 

 segment of the abdomen, which is abruptly and greatly 

 raised above the basal one (when the insect is reversed) and 

 liighest in the middle in front, so as to have a tuberculate 

 form. Important generic characters are the narrow stigma, 

 the very long second cubital cell, and the strong curved 

 spine at the apex of the front tibia? above. The wings 

 appear to be capable of longitudinal folding like those of 

 Eumenidas at least they are partly folded iu some examples 

 that I have received. 



I have examined the genitalia only in the common 

 Queensland species (i/. concinna), which has a wide oran;;e 

 band on the first segment, the third and following segments 

 orange. Genital armature elongate, the cardo short, the 

 apical prolongations of the stipites narrow, pilose, elongate, 

 longer than the basal part and not at all membranous; 

 sagittee reaching fully to the apex of these, dilated from 

 near the base ; together they are almost spoon- or racquet- 

 shaped. Process of the eighth ventral segment tNvice as long 

 as its greatest width, almost parallel-sided, only a litlle 

 prolonged beyond the median thickening, the apex emargi- 

 ginate and clothed with long hairs ; seventh segment widely 



