224 HYMENOPTERA. 



shining, minutely punctured, but punctures of first two segments much 

 larger than those on third ; hind margins of second and following seg- 

 ments (successively broader) whitish-hyaline, with long glittering 

 hairs not constituting definite bands ; venter with much white hair. 



Very close to N. tenuihirta and N. gilberti, but known by 

 the darker wings, red spurs, etc. 



Hab. — Alexandria, Australia, April, 1906 ( W. Stalker). 

 British Museum. 



Xomia melanoptera sp. nov. 



9 . Length nearly 10 mm. ; black, rather robust, with white and 

 black hair; face covered with grayish-white hair ; eyes strongly con- 

 verging below ; a more or less evident raised line from supraclypeal 

 area down middle of clypeus ; lower margin of clypeus with some fus- 

 cous hairs ; tongue of the long and linear type ; vertex dull and granu- 

 lar ; antennae wholly dark ; mesothorax shining, not hidden by hair, 

 with strong punctures of two sizes ; scutellum somewhat bigibbous ; 

 mesothorax and scutellum with scattered black bristles, evident in 

 lateral view ; postscutellum with a band of pure white tomentum ; 

 metathoracic channel shining, the transverse wrinkles few and irregu- 

 lar, below the channel the lower part of the enclosure appears as a 

 triangular smooth and shining space ; tegulae rather large, piceous 

 wings fuscous, unusually dark, though subtranslucent, the apex darker 

 basal section of b. n. very strongly arched, falling short of t. m. 

 second s. m. very small and narrow, receiving the first r. n. at its 

 apical corner ; legs black, with white hair on femora, and much coarse 

 black hair on tibiae and tarsi, outer side of tibial scopa pure white ; a 

 pencil of orange hair at end of hind basitarsus ; spurs dark ; abdomen 

 shining, with very fine indistinct punctures ; complete white hair-bands 

 on segments 3 and 4, a thin band on 2, and a little patch on each side 

 of first segment ; margins of segments not at all discolored. 



Very similar to N. stalkeri, gilberti etc., but distinguished 

 by the very dark wings, dark spurs, feebly sculptured ab- 

 domen, etc. 



Hab. — Cairns, Queensland, "Kur., 1. 02" {Turner). 

 British Museum. 



Nomia muscosa sp. nov. 



9 . Length about 10 mm., black ; superficially just like A", melan- 

 optera, but easily separated by the following characters: mesothorax 

 covered with a grayish moss-like tomentum, which appears black- 

 speckled from the origin of many bristle-like black hairs ; area of 

 metathorax quite different, the apical triangle dull, and not cut off 

 from the very narrow finely cross-ridged basal band ; tegulae reddish ; 



