My. J. \\. ^Fallocli on Exotir IMiiscaiidiW ("71 



Locality, lUue ^rountaiiis, New South Wales, 15. i. 1922 

 (Dept. Health, N.S.AV.). 



This species runs to Caption 6 in tl)e key already referred 

 to, but differs from all species in the key that fall in the 

 same segrej^ate by having the haltcres black, margins of 

 calypti'iXi fuscous, fore tibia without a })o.sterior median 

 bristle, the arista pubesceut, and the thorax with distinct 

 presutural acrostichals. 



Helina howei^ sp. n. 



Female. — x>Ietallic greenisli blue. Thorax densely gi'ey- 

 pruinescent, with rather conspicuous vittse anteriorly. 

 Abdomen faintly_, evenly grey-pruinescent. Head black, 

 iuterfrontalia opaque, facial orbits and checks whitish 

 pruinescent. Wings slightly brownish, darker along costa, 

 the cross- veins and apex of first vein with very distinct 

 clouding. Legs black. Calyptrse and their fringes white. 

 Knobs of halteres black. 



Frons about one-third of the head- width ; triangle nar- 

 row, extending almost to anterior margin of frons ; eyes 

 very indistinctly haired ; arista plumose. Thorax with three 

 pairs of postsutural dorso-centrals ; prealar very small ; pre- 

 sutural acrostichals not differentiated from the hairs. 

 Abdomen ovate. Fore tibia missing ; mid-tibia with two 

 posterior bristles ; hind femur with one or two preapical 

 antero-ventral bristles ; hind tibia with one antero-ventral 

 and two antero-dorsal bristles. Outer cross-vein curved, 

 less than its own length from apex of fifth ; veins 3 and 4 

 divergent apically. 



Length 5 mm. 



Tijpe, Lord Howe Island, New South Wales, U.iii. 1910 

 (Dept. Public Health, N.S.W.). 



In the key already referred to this species runs out at 

 the first Caption, differing from both segregates in several 

 characters, thus necessitating another segregate under num- 

 ber 1 as follows : — 



Thorax and abdomen gi'Genisb blue ; knobs of balteres 

 black; arista with very long hairs, plumose; cross- 

 veins of wings distiuctly infuscate ; caljptra3 white ; 

 thorax with three pairs of postsutural dorso-ceutials. hoicei, sp. n. 



Helina hirtihasis, sp. n. 



Male. — Very similar to whitei, jNIalloch, differing in 

 having the frons narrower, less than twice as wide as third 

 antennal segment, while in whitei it is at least twice as wide ; 



