of some new Species o/"Diopsis. 549 



graciles. Thorax cum spinis scutellaiibus (arcuatis) et metathoracicis, 

 piceo-niger. Scutellictn sordid^ albido-fuscescens. Abdomen dimidio ba- 

 sali fusco-rufesoenti, parte postica obscurioii, vel piceo. Alee hyalinae, 

 fascicl tenui basin versus, 2da latissima centrali, et 3tia tenuiori extern^ 

 curvata, apicem versus alarum fuscis. Pedes fusco-rufescentes, femori- 

 bus anticis paull6 incrassatis, posticis ad apicem inermibus, pedibus posti- 

 cis nisi ad basin femorum paull6 obscurioribus. 



Species 30. (vel 19 c.). Diopsis ornata, mihi. 

 Tab. XXVIII. Fig. 12. 



D. atra, capite abdomine pedibusque piceo-nigricantibus, oculis ferrugineis 

 pedunculis oculiferis capite paull6 longioribus, femoribus anticis dilatatis, 

 posticis quatuor ad apicem spiniferis ; abdomine dilatato clavato ; alls 4- 

 fasciatis, fascia 1 ma angusta et ad partem Sam longitudinis alarum sita, 

 2da latissima medium alarum occupanti ; 3tia angusta et 4ta apicali. 



Long. Corp. 3 lin. 



Habitat ? 



Diopsis fasciata. Crudrin Icoti. Rkgne An. Ins. pi. 103. Jig. 8. (descriptione 

 nondum edita). 



I have been obliged to give a new specific name to this insect, in order that 

 it may not be confounded with the D.fasciata of my monograph. 



Species 31. (vel 19rf.). Diopsis circularis. 

 Tab. XXVIII. Fig. 13. 



D. " Noir ; dilatations du front brunes. Genoux et tarses anterieurs et inter- 

 mediaires fauves. Ailes h, grand tache discoidale brune arrondie, en- 

 tourn^e d'un cercle hyalin. 



Long. Corp. 3^ lin. 



Habitat in India orient. 



Diopsis circularis. Macqiiart Hist. Nat. Ins. Dipt. vol. ii. p. 486. 



With reference to the geographical range of this genus, the species above 

 described prove, as already surmised, that it is confined to the Old World, 



