416 MK. r. W. EDWAEDS ON DIPTEEA 



Genus AcniAS. 

 Addas Fabricius, Syst. Antl. p. 247 (1805). 



63. ACHIAS PUNCTULATUS, 



Achias punctulatus de Meijere, Nova Guinea, ix. p. 372 (1913) ; Hendel^ Abli. z.-b. Ges. 

 Wien, viii. p. 215 (1914). 



1 ? . Canoe Camp, Setakwa River, Nov. 1912, 



The specimen is apparently immature ; the thoracic stripes are reddish instead of 

 black, and the hind-femora are narrowly yellow at the base, otherwise the agreement 

 with de Meijere's description is perfect. A. amplividens Walker, is extremely similar, 

 and has the same peculiar dotting on the head and thorax, but diifers in having the 

 femora yellow. 



Genus Lampkogastee. 

 Lamprogaster Macquart, Dipt. Exot. ii.-iii. p. 211 (1843). 



64. Lampkogastee quadrilinea. 



Lamprogaster quadrilinea Walker, Proc. Linn. Soc. London, iii. p. Ill (1859) ; Hendel, Abh. 

 z.-b. Ges. Wien, viii. p. 242 (1914). 



1 6 . Base Camp, sea-level, Setakwa River, Nov. -Dec. 1912. 

 Already known from New Guinea, Mysol, and Waigiu. 



Genus Euprosopia. 

 Euprosopia Macquart, Dipt. Exot. Supp. ii. p. 89 (1847). 



65. Euprosopia penicillata. 



Euprosopia penicillata Hendel, Abb. z.-b. Ges. Wien, viii. p. 343 (1914). 



? Euprosopia potens de Meijere (nee Walker), Nova Guinea, ix. p. 369 (1913). 



1 c? . Wataikwa River, Aug. 1910. 



Described by Hendel from Huon Gulf, New Guinea. 



66. Euprosopia sp. 



2 S . Wataikwa River, Aug. 1910. 



It is just possible that these represent the undescribed female of E. penicillata, 

 as the markings of the thorax and wings are identical. In these specimens, however, 

 the antennae and their cavities are black, and so are the legs, while the eye-margins 

 of the face have a silvery sheen. 



67. Euprosopia impingens. 



Platy stoma impingens Walker, Proc. Linn. Soc. London, viii. p. 134 (1865). 

 Euprosopia fusifacies de Meijere, Nova Guinea, v. p. 92 (1906), and ix. p. 369 (1913). 

 Euprosopia impingens Hendel, Abh. z.-b. Ges. Wien, viii. p. 345 (1914). 



] <S . Mimika River, Aug. 1910. 



Previously represented in the National Collection by Walker's type from Salawatti. 



