502 Mr. T. D. A. Cockerell — Descriptions and 



of the most brilliant orange ; no tooth or process on post- 

 scutellum or metathorax. Head and thorax dull, minutely- 

 roughened, with scattered punctures ; face broad, with a 

 slight raised line from middle ocellus to apex of clypeus, the 

 middle of which, a little below level of antennas, passes 

 through a shining elevation; clypeus strongly punctured; 

 mandibles bidentate ; tongue linear, of moderate length ; hair 

 of head mainly whitish, inconspicuous, of pleura and sides of 

 metathorax the same, but black on mesothorax and scu- 

 tellum ; area of metathorax bow-shaped, with a double curve 

 on each side, the apex (middle) angulate, the concave basin 

 with delicate ridges ; some pallid tomentum between meso- 

 thorax and scutellum. Legs black, with mainly dark hair; 

 tubercles with a conspicuous fringe of light hair; tegulse 

 moderately large, black. Wings strongly infuscated, ner- 

 vures fuscous, stigma rather small, reddish in middle; second 

 s.m. very small, receiving r. n. at beginning of its last third ; 

 hair of abdomen scanty, mainly dark, pale reddish at sides 

 of first segment, and a dense pale reddish apical fringe on 

 fifth; a little light colour on apical margin of first segment, 

 at extreme sides ; ventral segments fringed with long pale 

 reddish hair. 



Hob. Cairns, Queensland {Turner). " Kur. 4. 02," 2 ? . 

 British Museum. 



A magnificent species, related to N. cincta, Smith, from 

 Key Island. N. cincta, var. tomentifera, Friese, recorded 

 from Cairns, cannot be this insect, as it is smaller, and has 

 yellow-brown tegulge and brown-yellow legs. The thorax 

 also differs entirely in the pubescence. 



Nomia darwinorum, sp. n. 



cJ . — Length about 10^ mm. 



Very close to N. pulchrtbalteata, Cam. (cotype from New 

 Britain compared), differing thus: — Somewhat larger; hair 

 of face very dense, greyish white. Wings clearer, not so 

 brown, the outer margin broadly dusky. Hind femora more 

 swollen; hind tibise and tarsi without red; abdominal bands 

 considerably broader, apple-green (very yellow-green) shot 

 with vermilion ; fourth ventral segment with a very distinct 

 fringe of white hair. As in N. pulchribalteata, the scutellum 

 is bituberculate, and the postscutellum has a pair of long- 

 teeth, which arise from a mass of white tomentum. From 

 N. pulchribalteata austrovagans, Ckll., this is known by the 

 colour of the abdominal bands and hind legs. 



Bab. Port Darwin, Australia, 12.02 (Turner). British 

 Museum. 



