2 PROCEEDIlsrGS OF THE NATIONAL MUSEUM vol..7S 



time. Wiedemann, in redescribing it, had several other specimens, 

 probably three species in all, and made a combined description, mix- 

 ing the characters, as Williston has shown, so that it is impossible 

 to tell what the Fabrician specimen was. Thus the matter has stood 

 up to the present. It was assumed that the type is not now in 

 existence ; but the writer, noticing that Fabricius mentions the Sehes- 

 tedt collection, and recalling that this collection is now in the Zoo- 

 logical Museum in Copenhagen, sent to that Museum for comparison 

 a specimen which seemed to come rather close to stylata in the 

 character of the front being yellow. Dr. William Lundbeck very 

 kindly compared it with the type and reports it to be the same. 

 So at length the genotype of Stylo g aster is established, and is de- 

 scribed farther on. 



The type species of Stylomyia is leonum^ new, and that of Ptycho- 

 froctus is* complexus, new; in both cases only one species was 

 mentioned, and both are from South Africa. Both genera were 

 placed in synonomy by Williston in 1883. 



A list of the known species is given by Krober in 1915 and 1919. 

 Since 1919 the following species have been published : 



bakcri Bezzi, Phiiiiipine Journ. Sci., vol. 12, 1917. p. 157. — Philippine Islands, 



orientalis Brunetti, Fauna Brit. India, vol. 3, 1923, p. 272. — India. 



nitens Bkunetti, Ann. and Mag. Nat. Hist., sei-. 9, vol. 15, 1925, p. 111. — Asbanti, 



Africa. 

 horvathi Szilady, Ann. Mus. Nat. Hung., vol. 24, 192G, p. 592. — Costa Rica. 



This I have included as a synonym of stylosa Tovs^nsend. 

 biannuiata var. argcntina Krober, Konow^ia, vol. 8, 1929, p. 174. — Northern 



Argentina. This I talie to be a synonym of stylata. 

 varifrons Malloch, Annals and Mag. Nat. Hist., ser. 10, vol. 5, 1930, p. 465. — 



S. Rhodesia, Africa. 



Generic characters. — The genus Stylogaster is readily distinguished 

 from the rest of the Conopidae by the very short and narrow anal 

 cell, which is hardly as long as the second basal and is usually a 

 little drawn in (never prolonged) on the anal vein; the long, thin, 

 geniculate proboscis; the very narrow cheek, which is hardly vis- 

 ible in side view; the distinct chaetotaxy; and the striking, long 

 ovipositor of the female. The arista is subapical, three jointed, the 

 first two joints short. The eyes have greatly enlarged facets in the 

 part facing directly forward, the same size in both sexes. The 

 labella are setaceous, more or less rolled outward, and white in 

 color. The chaetotaxy is distinct and very uniform, offering spe- 

 cific characters, however, in three points. The only bristles of any 

 size on the head are a pair of postverticals, which are long, straight, 

 parallel, and bent backward. The thorax has the following: Dor- 

 socentral 1 (near scutellum) ; humeral or 1; prothoracic 1; noto- 

 pleural 1 or 2 ; supraalar 1 or 2 ; pteropleural 1 ; postalar 2 ; scutel- 



