130 HYMENOPTERA. 



tips ; the flagellum pale testaceous beneath. Thorax, the disk 

 thinly covered with pale ochraceous pubescence ; the anterior 

 and intermediate tibiae in front yellow ; all the tibiae and tarsi 

 have a pale glittering pubescence ; the apical joints of the tarsi 

 ferruginous ; wings subhy aline, iridescent, nervures fuscous, the 

 tegulse testaceous. Abdomen short and somewhat globose, de- 

 licately punctured, the margins of the segments have on each 

 side a short fascia of white pubescence. 



Obs. The fascia on the abdomen probably in very recently 

 disclosed specimens would be entire. 

 Hab. East Florida. (E. Doubleday, Esq.) (Coll. F. Smith.) 



Genus 5. MACROTERA. 



Macrotera, F. Smith's MSS. (Details, Plate V.) 



Head as wide as the thorax, ocelli in a slight curve on the 

 vertex ; 1 he mentum about one-third the length of the labium ; 

 the labium elongate, slender, tapering to a point at its apex ; 

 the labial palpi four-jointed, the basal joint one-third longer 

 than the three following united ; the basal joint narrowest at its 

 apex ; maxillary palpi six-jointed, gradually tapering to the apex ; 

 the anterior wings having one marginal cell, truncate at its apex ; 

 submarginal cells two, the first about twice the length of the 

 second ; the second narrowed to about half its length towards 

 the marginal ; the posterior tibiae having a long loose clothing of 

 hair. 



1. MACROTERA BICOLOR. B.M. 



Female. Length 4 lines. Head and thorax black, head de- 

 licately and closely punctured, the clypeus and lower parts of 

 the face having large scattered punctures, the anterior margin 

 of the clypeus truncate ; the flagellum rufo-testaceous beneath ; 

 the mandibles ferruginous, rounded at their apex, edentate. 

 Thorax, the disk smooth and shining, having a few scattered 

 fine punctures, the metathorax rounded, impunctate above, and 

 having a thin pale pubescence ; the wings hyaline and iridescent, 

 the tegulse testaceous, nervures ferruginous ; the tarsi have a 

 glittering pale yellow pubescence, and the posterior tibiae have a 

 thin scopa of the same colour, the claw- joints of the tarsi rufo- 

 testaceous. Abdomen elongate-ovate, ferruginous, more or less 

 fuscous at the base, the apex having a thin fimbria of pale pubes- 

 cence. 

 Hab. Mexico. 



