30 



verse, its hind margin very wide. Labrum when fully seen very large, 

 comparable in size with the clypeus, having a large median basal tuber- 

 cle, which is emarginate in front, and in front of this a strongly raised 

 median longitudinal carina. Mandibles with well-developed apical 

 tootli and an inner short blunt one. Tongue much as in Euryglossa. 

 Maxillary palpi 6-jointed, two basal ones stout, the third more slender 

 and elongate, but stouter than the three following, which are subequal 

 in length, the two first of these being clavate, or elongate-subtriangu- 

 iar. Labial palpi shortish, 4-jointed, the terminal slender. Pronotum 

 not visible from above, the head being adapted to the mesonotum, 

 post-scutellum emarginate in front, as long as the very short pro- 

 podeum in dorsal aspect; anterior area of the latter defined by differ- 

 ence in sculpture. Hairs of anterior tarsi regularly arranged, but less 

 dense than those of Prosopis, Stilpnosorrta and Euryglossa, and with 

 those on the outer side peculiarly flattened. Stigma about as much 

 developed as in Euryglossa, radius bent almost at a right angle, at 

 end of first abscissa, second submarginal cell consequently very high, 

 the second transverse cubitus twice as long as its lower side, its super- 

 ior apical angle very acute. First recurrent nervure received by first 

 submarginal cell a little before the apex, the second recurrent received 

 by the second submarginal equally a little before its apex. Discoidai 

 cell beneath the second submarginal also very narrow and high, dia- 

 mond-shaped, but with the upper angle truncate. Hind tibiae spinose, 

 as in females of Sphecodes. Abdomen truncate at base and impressed 

 on the truncate part. 



A very remarkable blunt-tongued bee, of which there are 

 allies in Australia of much more minute size, but these differ 

 in characters, which may prove generic, or may necessitate modi- 

 fication of the characters given above. 



Pachyprosopis mirabilis sp. nov. 



Black, mandibles, except tips, labrum, antennae, legs (except coxae 

 trochanters and greater part of femora) together with the abdomen 

 ferruginous or in parts more yellow. The clypeus and a wide triangle 

 above it is bright yellow. Front femora olack on the basal half, the 

 other femora pale only at their apices. The head and thorax have a 

 metallic tint, blue or green. 



Head rather shining as compared with the thorax, the clypeus 

 sparsely punctured, the front with very fine remote punctures, and 

 the surface between with excessively dense microscopic sculpture. 

 Grooves along the inner orbits deep, extending from just above the 

 line of insertion of the antennae not quite to the top of the eyes. 

 Thorax above very dull, minutely, but distinctly, remotely punctured. 

 Post-scutellum more densely, but less definitely punctate. Anterior 

 area of the propodeum impunctate, bare, with the general dense sur- 

 face sculpture only, at the sides of this rougher and pilose. Abdomen 

 dull with dense surface sculpture, but not punctured, its basal trunca- 

 tion pilose. Female, length 5 mm. 

 Hab. Australia, N. Queensland. 



