30 PROCEEDINGS OF THE ACADEMY OF [Jan., 



These look like different species, but are apparently only extreme- 

 variations of E. angophorce, or perhaps a closely allied species, which 

 will take the name E. hackeri. 

 Exoneura hamulata Cockerell. 



The clypeal mark in the females varies, and the best character 

 to distinguish this species from E. bicolor Smith is the broad face. 

 Mr. G. Meade- Waldo has kindly compared my determination of 

 E. bicolor with Smith's type, and finds it correct (allowing for a 

 certain amount of variation in the clypeal stripe); he adds, "the 

 type has the face conspicuously narrowed below." I have received 

 E. hamulata labelled bicolor, and Friese evidently had hamulata 

 as bicolor, since in his description of E. froggattii he remarks that 

 bicolor has the inner orbits parallel. Females of hamulata before me 

 have the following data: Windsor, Victoria (French; Froggatt Coll. 

 161); no locality (Nat. Mus. Vict. 103); Armidale, N. S. W., Nov. 

 27, 1900 (Froggatt 163); Moss Bay, Dec. 13, 1893 (Froggatt 158). 



In Ann. Mag. Nat. Hist., Oct., 1910, I described a male Exoneura, 

 evidently either bicolor or hamulata, I thought probably the latter. 

 I now conclude that it was bicolor, as I have before me a different 

 male (Stradbroke Island, Oct. 2, 1911, H. Hacker; Queensl. Mus. 2), 

 which seems to be hamulata. It is 8| mm. long, with very red wings, 

 and differs from the male now supposed to be bicolor by the pale 

 face marking being confined to a large triangular cream-colored 

 clypeal patch, one side of which covers the upper end of the clypeus. 

 The first two abdominal segments and the middle of the third are 

 black. The flagellum is distinctly dark reddish. It would seem 

 from the large size and very red wings that this cannot be the male 

 of E. angophorce; yet it is a rather suspicious circumstance that two 

 female Exoneura from Stradbroke Island, Queensland (Sept. 27, 

 1906, Froggatt, 145, 201), belong to a large (7 mm. long) variety cA 

 E. angophorce, having the characteristic abdominal markings of 

 the hackeri type; one has a narrow ferruginous clypeal stripe, the 

 other has it practically obsolete; there are no lateral marks. The 

 hair on the hind legs is reddish (more or less coppery) rather than 

 black. The inner orbits strongly converge below. These females 

 are certainly not bicolor, and of course they are entirely distinct 

 from hamulata; they are, however, surely conspecific with the 

 Brisbane forms of angophorce. It is possible that the Brisbane 

 and Stradbroke Island forms represent a distinct new species, 

 which will then take the [name E. hackeri. It remains for local stu- 

 dents to decide this question. 



