70 
Psyche 
[June 
Inner orbits very distinctly diverging toward the vertex. 
Smooth postvertex rather short, transversely elongate, 
the anterior angles abruptly rounded off, the anterior 
margin rather straight and longer than each of the 
sides; without median pit and rudimentary ocellus. 
Wing 7 to 8.5 mm. long L. americana (Leach). 
5. American and Pacific species. Postvertex rather long; 
the anterior angles broadly rounded off, the anterior 
margin about as long as each of the sides. Wing 7.5 to 
8.5 mm. long L. nigra (Perty). 
African species. Postvertex rather short, more trans- 
verse; the anterior angles more abruptly rounded off, 
the anterior margin much longer than each of the 
sides. Wing 8 to 8.5 mm. long L. dukei (Austen). 
In the foregoing key the terms “postvertex” and 
“fronto-clypeus” are used as defined by Jobling. The 
postvertex corresponds to the “vertical plate” or “vertex” 
of most authors, being the hard, smooth area in the upper 
part of the frons, limited behind by the occipital margin. 
Lynchia pilosa (Macquart) 
Olfersia pilosa Macquart, 1843, Mem. Soc. Sci. Lille, 
(1842), p. 434 (no sex; Africa, without more definite lo- 
cality; but since the type was collected by Delalande, it 
must have come from South Africa) ; 1843, Dipt. Exot., 
II, pt. 3, p. 277. Neave, 1912, Bull. Ent. Res., Ill, pp. 317, 
320 and 322. Morstatt, 1913, Der Pflanzer, IX, p. 509. 
Lynchia pilosa Falcoz, 1930, Encyclop. Entom., Diptera, 
V, p. 48. Bedford, 1932, 18th Kept. Director Vet. Serv. 
Animal Ind. Union S. Africa, p. 424. 
Specimens Examined. — Orange Free State: Hoopstad, 
one female (H. Brauns). — Abyssinia: Ouache (= Hawash 
River?), one male (Paris Museum). 
This remarkable species is readily recognizable by the 
peculiar pilosity of the thorax and the hyaline, extensively 
bare wings. 
The present location of the type is unknown. The hosts 
are species of bustards, according to G. A. H. Bedford 
(1932), who records L. pilosa off the Kori, Choriotis kori 
