418 ME. F. W. EDWAEDS ON DIPTEEA 



4 d ,1 ? . Mimika River, July and August 1910. 



One of the four males has the antlers very much shorter than usual, but if one may 

 judge from somewhat analogous variation in other flies this can only be an individual 

 character. Another male has absolutely clear wings, but is perfectly normal struc- 

 turally and, so far as I can judge, is simply an immature specimen. 



71. Phytalmia'? wollastoni, sp. n. (PI. XXXVIIl. figs. 8, 8 a.) 



3 S . Mimika Eiver, July and August 1910. (T/jpe of the species.) 



Closely resembles P. cervicornis Gerst. in coloration, but differs widely in the shape 

 of the abdomen, in the venation, and in the chsetotaxy of the thorax. 



Head as in P. cervicornis, except that the arista is almost as hairy on the under- as 

 on the upperside. Thorax less narrowed in front than in P. cervicornis, and provided 

 with two narrow dorsal longitudinal blackish lines, running from the front margin two- 

 thirds of the length of the mesonotum. Two notopleural and two supra-alar bristles, 

 all equally well developed ; no sternopleural or humeral bristles. Scutellar bristles 

 two, strong and widely divergent. Ahdoinen shorter than in P. cervicornis, widest at 

 the apex of the first segment, which widens out evenly from the base to the apex, and 

 is barely twice as long as the second segment. Second segment rather broader than 

 long, third and fourth about equal in length and breadth ; ovipositor similar to that 

 of P. cervicornis, but broader at the base and rather shorter. Legs much shorter than 

 in P. cervicornis, entirely light brown except for the last four joints of all the tarsi, 

 which are blackish. Wiiigs much resembling those of P. cervicornis, both in colour, 

 shape, and venation, but the vein closing the anal cell is vertical and slightly sinuous, 

 instead of being straight and inwardly oblique, and there is a narrow deep brown 

 border on the wing-margin extending from the stigma to the apex. Halteres ochreoiis 

 brown. 



Length of body (including ovipositor) 12-5 mm., of wing 9 mm. 



Subfamily TrypaneinsB [Trypetince). 



Genus Diplochorda. 

 Dlplochorda Osten-Sacken, Ann. Mus. Geuova, xvi. p. 484 (1880) ; Heudel, Gen. Ins., 

 Pyrgotinse, p. 4 (1911). 



72. Diplochorda concisa. 



Elaphomyia brevicornis Saunders (part.). Trans. Ent. Sec. London, n. s. v. p. 415 (18G1). 

 Dacus concisus Walker, Proc. Linn. Soc. London, v. p. 252 (1861). 

 Dacus turgidus Walker, Proc. Linn. Soc. London, viii. p. 134 (1865). 

 Diplochorda turgida Osten-Sacken, Ann. Mus. Genova, xvi. p. 487 (1880). 



1 ? . Mimika River, July 1910. 



1 ? . Wataikwa River, August 1910. 



