NORTH AMKRICAN HYMENOPTERA. 273 



IVoteii) oil Bees, with ne^^vriptioiis of IS'ew Species. 



BY CHARLES ROBERTSON. 



Prosopis floridanns 9. — Black, opaque, first segment of abdomen 

 shining; head and thorax densely and finely punctured; metathorax truncate, 

 the disc coarsely reticulated, abdomen impuuctate; flagelluni testaceous beneath : 

 a spot on clypeus, sometimes wanting, a spot on each side of face, extending 

 half its length above clypeus, two spots on collar, tubercles, a spot on tegulse, 

 and bases of all the tibise, pale yellow ; apical joints of tarsi testaceous, base of 

 hind pair whitish ; wings hyaline, nervures testaceous, stigma and tegulfe dull, 

 recurrent nervures uniting with transverse nervures, or slightly before them. 

 Length .5 nim. 



Hah. — Florida ; seven specinieus % taken in Citrus County. 



This species closely resembles /-*. affinis Sm. It is distinguished 

 from that species by its somewhat smaller size, its clearer wings, 

 paler ornaments, by having the spots on the face more elongate and 

 the hind tarsi whitish at base. 



Prosopis naininipes 9.— Black; the punctures rather coarse, more 

 dense on head than on mesothorax; metathorax not truncate, enclosure rugose; 

 a triangular spot on each side of face, two spots on collar, and tubercles yellow ; 

 first, and base of second segment of abdomen rufous; legs, except bases of an- 

 terior and middle pair fulvous; wings except base dusky, stigma and tegulse 

 black, first and second submarginal cells each receiving a recurrent nervure near 

 its apex. Length 7 mm. 



Hah. — Florida ; one specimen taken in Citrus County. 



This species closely resembles P. nelumhonis Rob. It is distin- 

 guished by darker antennae and tegul?e, more sparsely punctured 

 mesothorax, and especially by its fulvous legs. 



AiMlreiia cratsegi 9.— Black, shining; clypeus rather coarsely and 

 sparsely punctured ; clothed with short, thin, pale pubescence, on the sides of 

 the face and vertex the pubescence inclines to ochraceous; process of labrum 

 small, triangular, truncate, apex of mandibles rufous: mesouotum and scutellum 

 shining, sparsely punctured, clothed with pale ochraceous pubescence, which is 

 short and thin, except on the sides; metathorax truncate, with long pubescence 

 below, enclosure on the disc strongly rugose, but not enclosed with a salient rim ; 

 wings fulvo-hyaline with a strong violaceous reflection, the apex clouded, ner- 

 vures and stigma testaceous, tegulse dull; legs with ochraceous pubescence, the 

 tarsal joints within with fulvous pubescence; apical joints of tarsi ferru<rinous • 

 abdomen shining, rather coarsely punctured, apical margins of segments 2-4 de- 

 pressed nearly to the middle, the pubescence so short and thin that the abdomen 

 appears bare, except the anal fimbria, which is dull fulvous. Leuffth 10 mm. 



% .—Resembles the female, but the head and thorax are more closely punctured 

 and with the pubescence longer, more dense and more fulvous, the abdomen 

 more sparsely and finely punctured; antenna? long, third and fourth joints sub- 

 equal ; wings paler; sixth ventral segment with a conspicuous reflexed dentiform 

 angle on each side. Length 8-10 mm. 



Hab. — Illinois; thirty-one female, twenty-three male specitnens. 



TKANS. AM. ENT. SOC. XX. (35) OCTOBER. 1893. 



