461 Mr. F. Smitli's Revision 



The produced jDost-scutellum, althougli one of tlie 

 essential characters of the genus Pyrin, is also found to 

 characterize one or two species of Clirijsis from Western 

 Africa ; these belong to the division of that genus in which 

 the third abdominal segment is armed with four teeth. 

 Belonging to the same division, and also from the same 

 locality, several species of Chrysis have the post-scutellum 

 triangular and slightly projecting ; these species form 

 apparently a connecting link between the genera. 



Dahlbom has united tlie species of the genus Pyria 

 "vvith those of Chrysis, but the general aspect, or rather 

 habit of the species is sufficient in my opinion to warrant 

 their separation ; the type of the genus, Pyria lyncea, 

 closely resembles a true Stilhum in its general form ; it has 

 the head narrower than the thorax, the post-scutellum pro- 

 duced, the convex abdomen, gradually narrowed from the 

 base to the apex, whilst the construction of the antennas 

 separates them at once from the genus Chrysis. There are, 

 however, species which are placed in the genus Pyria Avhich 

 have not the post-scutellum produced ; P. ocellata is an 

 exam}ile of this : the genvis, therefore, will probably be 

 regarded as a mere section of the extensive genus Chrysis ; 

 any Avell-defined section of an extensive genus is advan- 

 tageous, whether a distinctive name be assigned to it or 

 not. 



1. Pyria lyncea. 



Chrysis lincea, Fabr. Syst. Ent. p. 357. Chrysis 



lyncea, Fabr. Ent. Syst. ii. 240 ; 



Syst. Piez. p. 172; Dahlb. Hym. 



Europ. ii. 839. 



Pyria armata, St. Farg. Encycl. Meth. x. 459; Brulle, 



Hist. Nat. des Ins. Hym. (St. Farg.) 



iv. p. 21. 



Pyria Reichei, Spin. Ann. Soc. Ent. France, vii. 448. 



Pyria canaliculata, Brulle, Hist. iS'^at. Ins. Hym. iv. 



p. 20. 

 Pyria lyncea, Gerst. Peters' Reise Mossamb. p. 519. 

 Hah. — Sierra Leone; Mozambique; Gambia; Angola; 

 Knysna ; Cape of Good Hope. 



2. Pyria stilhoides. 



Pyria stilboides. Spin. Ann. Soc. Ent. France, vii. 

 446 ; Gerst. Peters' Reise Mossamb. 

 p. 519. 



