488 [June 



Male. — Smaller and more slender than the female ; the tips of the 

 four anterior femora, all the tibia? except the posterior pair behind, and 

 all of the tarsi, are pale fulvous; the wings are more brilliantly iride- 

 scent ; the abdomen is more elongated and slender, with the petiole, 

 first segment except tip, an irregular mark across the middle of the 

 second and third segments, and the remaining segments entirely, are 

 black or piceous-black ; the apex has an upcurved, ferruginous spine. 

 Length 31 lines; expanse of wings 5? lines. 



Two 9 , one % , specimens. 



2. Mimesa proxima. n. sp. 



Black; face silvery: wings hyaline; antennfe beneath and abdomen, except 

 base and apex, fulvous: metathorax finely sculptured: petiole of abdomen short. 

 Female. — Black, thinly clothed with a short, glittering, pale pube- 

 scence, with scattered minute punctures; face and clypeus silvery; an- 

 tennae rather short, clavate, much thickened towards the tips, the flagel- 

 lum fulvous beneath. Thorax : metathorax with white pubescence, 

 very finely sculptured, with a deep longitudinal central channel poste- 

 riorly, the base finely striated ; tegulas dull testaceous. Wing hyaline, 

 iridescent; nervures fuscous. Legs piceous-black, pubescent; tarsi 

 pale fuscous, the calcaria whitish. Abdomen elongate, shining, subse- 

 riceous, rufo-ferruginous; the petiole, base of first segment, and the two 

 apical segments, blackish ; petiole short, about as long as the first seg- 

 ment. Length 3] lines; expanse of wings 5 lines. 



One specimen. Closely related to the preceding, but very distinct 

 by the finely sculptured metathorax. 



3. Mimesa unicincta. n. sp. 



Black; face silvery : wings hyaline: second segment of abdomen rufous. 



Female. — Black, slender, thinly clothed with a short glittering pu- 

 bescence; the face and clypeus bright silvery; antenna? as long as the 

 head and thorax, gradually, but not strongly thickened at tips, which 

 are fulvous beneath. Thorax very minutely and sparsely punctured, 

 metathorax finely and longitudinally sculptured, the posterior face un- 

 evenly depressed, sides pubescent; tegulse obscure testaceous. Wings 

 hyaline, beautifully iridescent; nervures black. Legs black, sericeous, 

 the tarsi pale fuscous. Abdomen elongate, subclavate, sericeous, shin- 

 ing black, the second segment orange-ferruginous, dusky at tip; petiole 

 linear, as long as the first segment. Length 3 lines ; expanse of wings 

 4| lines. 



One specimen. Easily distinguished by the single rufous band on 

 the abdomen. 



