66 WM. H. ASHMEAD. 



Second cubital cell quadrate or trapezoidal, as long as the first or third, coni- 

 cal, banded or marked witb white pubescence; maxillary and labial 



palpi 4-jointed Lei opod us Smith. 



3. Second cubital cell, along the cubitus, shorter than either the first or third, or 

 the second and third are equal or nearly. 

 Third cubital cell, along the radius, much shorter than along the cubitus, being 



narrowed above 16. 



Third cubital cell, along the radius, as long as along the cubitus, not narrower 



above than below 4. 



1. First cubital cell, along the cubitus, much shorter than the second and third. .9. 



First cubital cell, along the cubitus, as long as the second and third united or 



nearly. 



Third transverse cubitus angularly broken, not strongly curved outwardly. .8. 



Third transverse cubitus not angularly broken, strongly curved outwardly. .5. 



."">. Submedian cell somewhat longer than the median, but the transverse median 



neivure is straight, oblique or only slightly bent, but not angulated. .7. 



Submedian cell much longer than the median, the transverse median neivure 



strongly angulated or > shaped 6. 



i) Body black, the thorax densely pubescent, with griseous or pale fulvous 

 hairs above. 

 Abdomen black, immaculate; scutellum broad, the axilbe produced poste- 

 riorly into long, acute teeth or spines, the postscutellum unarmed. 



Bombomelecta Patton. 

 Abdomen black, shining, but the dorsum with maculae of white pubescence 

 laterally; scutellum somewhat convex, scarcely bilobed, the postscu- 

 tellum armed with a spine or tooth, the axillae normal, unarmed ; 



maxillary palpi 5-jointed ; labial palpi 4-jointed HI electa Latr. 



Body rufous or rufous and black, bare or nearly; scutellum bilobed, the axilla* 

 triangularly acute at apex, but neither long nor extending beyond the 

 bind margin of the middle lobe. 



Pyrrhomelecta Aslun. n. g. (Type Epeolus glabrata Cr.). 



Body black, the thorax almost bare above, the abdomen dorsally banded with 



white or with white lateral maculae; axillse triangular; scutellum 



proper [middle lobe) very large, flat, quadrangular and extending 



over the metathorax, the hind margin sinuate; labial palpi 2-jointed ; 



maxillary palpi 5-jointed. • • •'• C'rocisa Latr. 



7. Third cubital cell not narrowed above, the marginal cell not longer than half 

 the length of the first discoidal cell. 

 Scutellum bilobed. each lobe with a short conical tooth on its disk; axillse 

 normal; postscutellum unarmed; labial palpi 5-jointed; maxillary 

 palpi 4-jointed, the last joint minute. . ■ I'seudomelecta Radoszk. 

 Scutellum terminating in two pointed tubercles; axillae produced posteriorly 

 into acute incurved spines ; postscutellum unarmed; labial palpi 

 4-jointed ; maxillary palpi 2-jointed, the basal joint minute globose 



Thalestria Smith. 



Third cubital cell narrowed above, being much shorter along the radius than 



along tin- cubitus, the marginal cell longer thau half the length of the 



first discoidal ; labial palpi 2-jointed. 



Metathoraeic angles densely pubescent : transverse median nervure notangu- 



late; scutellum bilobed Ericrocis Cress. 



