p 



ANTHRACIN^ 



517 



Y 



8 (9) Third joint of the antennae elongate-conical, with a more or less 

 long style separated from the cone by a distinct suture and 

 ending in a microscopic bristle, but without any apical pencil of 

 hairs (fig. 307). Pulvilli undeveloped. 



jV.B. — These characters do not apply to several European species 



Fig. 306. — Exoprosopa Minos ? . x 6^ 



which have been placed in Ejcoprosojia simply because they have three 

 submarginal cells and apparently a terminal style, e.g., E. stiqnda has 

 no separated style but only the apical microscopic bristle, and E. 

 Pallasii has only a short rather thick style. 



Exoprosopa. 



9 (8) Third joint of the antennte and its style as in Argyramceba 

 (fig. 808). Pulvilli developed. Spongostylum. 



10 (7) Submarginal cells two only (fig. 304). 



11 (12) Antennal style separated from the prolongation of the third 



antennal joint by a distinct suture, and bearing an apical 

 pencil of hairs (fig. 308). Pulvilli developed. 



Fig. 307. — Exoprosopa Jacchus 

 i. X 33. 



Fio. 308. — Argyramceba sinuata 

 ?. X 22. 



Fig. 309. — Anthrax Paniscus 

 £. X 33. 



Third antennal joint usually shaped Hke a flattened onion except 

 for the contrasted style-like prolongation, but stages occur in which it 

 is more conical. 



Argyramceba.* 



12 (11) Antennae with the third joint produced into a long style-like cone 

 which bears a microscopic apical bristle but no pencil of hairs 

 (fig. 309). Pulvilli usually undeveloped. 



Contact of the discal cell with the third posterior at least twice as 

 long as with the postical, the latter contact being sometimes only 

 punctiform. 



3. Anthrax.* 



* Bezzi contends that Argyramceba should be caUed Anthrax, a.nA that Anthrax in the sense used above 

 should be called Hemipenthes. 



