1880.] PROF. WESTWOOD ON THE GENUS PERGA. 37l 



20. Perga kirbii, Leach, Zool. Misc. iii. p. 117. (Plate 

 XXXVII. fig. 4.) 



" P. lutescens, capite thoraceque supra fusco-ferrugineis, abdominis 



durso violascenti-ferrugineo ; alis hyalinis, casta stigmateque fer- 



rugineis ; abdomine Urieari. Maris long, corp. 9, expans. alar, 



18 lin. Mus. Kirby." — Leach. 



Obs. Typus masculinvis Leacliianus hujus speciei valde distinctse 



olim in Mus. Kirbii, nunc iu Mus. Hopeiano (a Leacbio ipso in- 



scriptus) hospitatur. 



21. Perga dahlbomii, Westw. (Plate XXXV. figs. 3, 4.) 



P. bicoiori, Leach, affinis magniludine et habitu, differt scutello 

 piano, postice marginato, cellulaque secunda submarginali parva 

 tertiaque subovali imprimis distincta. 



Capite nigra ; labro, clj/peo mandibulisque concolaribus, tuberculis 

 antenniferis guttaque poneaculas luteis ; antennis brevissimis, ni- 

 gris; coliaris laleribus dilatatis, luteis, antice parian obscuri- 

 oribus; scutello albido-lutea, subplano, postice tenuiter marginato ; 

 abdomine nigro-chalijbeio ; alee stigmute venisque nigris, cellulis 

 submarginalibus prima et secunda cuqualibus, tertia multo mnjore 

 elongata sabovuli, apice vulde cvrvato ; pleuris mesosferni nigris, 

 macula magna semiovali et metapleuris gutta rotunda luteis notutis; 

 coxis anticis basi albidis; pedibus luteis, femaribus omnibus basi 

 apiceque tibiarum et tarsarum in jjosticis ?iigris. 



Mas differt vertice longitudinaliter impresso, et maculis duabus 

 rotundis luteis notato, thorace magna, antice elo7igata, abdomine 

 parum niinore quam thorax, alarum anticarum stigmate magna 

 margineque antico pone stigma haud subito oblique truncate. 



Long. carp. ^ lin. 5, $ 6|^. Expans. alar, antic, d" Hn. 10, $ 

 lin. 12. 



Hab. in Australasia. In Mus. Hopeiano Oxonise. 



22. Perga bicolor. Leach, Zool. Misc. iii. p. 116. 



" Per nigra, clypeo, capitis lateribus, thorace ante squamas utrinque, 

 scutello, tibiis, tarsis coxisqxie 4 posticis albidis, tarsis tibiisqueA 

 posticis apice nigris ; alis hyalinis,upicefuscescentibus,pterygosteis 

 nigris. Femora postica basi albida. Mas adhuc latet." (Leach.) 



Species nigra, labra nigra, clypeo scutellaque luteis, coxis, trochan- 

 teribus hasique femarum 2 j^osticorum albidis distincta. 



Scutellum convexum, medio longitudinaliter impressum. Alarum 

 anticarum cellula secunda submarginalis prcecedente vel sequente 

 7najor ; cellula tertia subquadrata. 



Long. corp. 7g. Expans. alar. 11| lin. 



Long, indiv. nonnuUorum foemineorum in Mus. Hopeiano lin, 63; 

 expans. alar, antic, lin. 12^. 



Hab. in Australasia (South Australia, Damell). 



23. Perga spinol^, sp. nov. (Plate XXXVI. fig. 4.) 

 Foemina. Subgracilis, cyiindrica, piceo-nigra, punctata, abdominis 



basi et apice Jiavis, alis anticis dimidio apicali magisfuscis ; labro, 

 Proc Zool. Soc— 1880, No. XXV. 25 



