﻿6 Aimnln of tin' SniifJi Aj'rlriti) i\r)iseiiii/ . 



70 (<>7). Face bluntly convex, latlier i)niuiinent ; second lonj;itiulinal vein 



orig-inating- before the middle cross-vein ; third antennal joint 

 graduallj- tapering into a not thin 2>oint ; pulvilli well developed. 



SijnDiOiut, gen. nov'. 



71 (•»<)). Front tibiae smooth ; proboscis projecting ; face conically prominent 



or at least bluntly convex : third antennal joint cone-shaped; third 

 posterior cell often short .... Thyridaiithrnv, O.H. 



72 (tjô). Three or four submarginal cells ; ocellar tubercle far remote from the 



vertex; claws usually with a distinct basal tooth. 

 78 (76). Three submarginal ctdls only: claws with a long and acute basal 

 tooth . 



74 (7ô). Face ronnded ; proboscis longer than the oral cavity, usually very 



projecting- ; fore tibiae besot with spicules Litorrhynchus, Macq. 



75 (74). Face mainly conical; proboscis shorter and less projecting; fore 



tibiae usually smooth .... Exoprosoim, Macq. 



7<; (78). Four submarginal cells; claws with a short and olituse tooth. 



Hyiievalon ia. Kond. 



Famiia- BOAIBVLTTDAE. 

 Suiu'A^iiLv BOMHVLIIXAE. 



BOMBYLJUS, Limié. 

 Syst. Natur., eil. x, p. 228, 1758. 



This genus is very abundantly represented in the South African 

 Fauna. The genus TripJaslas, as it was understood by its author in 

 1855 and 1860 (with tlie exclusion of the American species added 

 subsequently), is evidently the same as Bomhyîhis, being based only 

 on the variable character of the three submarginal cells ; at any rate 

 the type-species T. hlrltfatus (which is Avanting in the South African 

 Museum collection) must be considered as congeneric with B. Jateralia. 



The very niunerous South African species in the collection may be 

 divided in the following traditional groups of higher value: 



J (()). Hind femora si:)inose at base; antennae approximate at base and 

 with the first joint not thickened ; wings with a more or less 

 developed basal comb, often of very large size. 



- (•"')• Eyes of the male unite<l ; no strong bristles on head or on fore part 

 of thorax ; third antennal joint usually short, and not much attenuated 

 at end ; pulvilli more or less biit always well developed ; wings with 

 small basal comb and with the discal cell usually more or less 

 acute outwardly. 



3 (4). Hairs of prevalent black colour, at least on abdomen; there 

 art; usually silvery spots of squamose hairs on head, thorax and 

 abdomen ....... otev Gi-oup. 



