ANTHOPHILA. 129 



6. — Third submarginal cell sulxiuadrate, not narrower above than beneath ; mar- 

 ginal cell obtuse at tip, extending beyond the apex of the third 

 snbniargiual cell not more than its widest part ; maxillary paJpi 

 ()-jointed. 

 Knee plate of posterior tibiie 9 li^rge and rounded ; mandibles simple or 



bidentate at apex in both sexes Antliophora Latr. 



Knee plate 9 sharply defined, its tip narrow and elongate ; mandibles 



tridentate in both sexes. Clisodoil Patton 



Third submargiiial cell narrower above than beneath ; marginal cell extend- 

 ing far beyond the apex of the third submarginal cell 7. 



7. — Apex of marginal cell obtuse, not attaining the costal margin; second sub- 

 marginal cell nearly triangular, being much narrowed towards the 

 marginal and smaller than the third submarginal ; scutellum with 

 a more or less distinct lateral tooth ; abdomen with short, dense, 

 scale-like pubescence; maxillary palpi l-jointed...Epeolus Latr. 

 Apex of marginal cell attaining the costal margin of the wing; maxillary 

 palpi fi-jointed. 

 Body almost entirely naked, of graceful form and more or less ornamented 

 with pale markings ; abdomen subsessilc ; legs without or with very 

 sparee pubescence ; scutellum often obtusely bituberculate, but with- 

 out lateral teeth ; stigma well developed, lanceolate, second submar- 

 ginal cell receiving the first recurrent nervure in tlie middle or 



between the middle and apex NoinHtla Fabr. 



Body, except most of abdomen, clothed with dense pubescence ; form 

 broad and robust, abdomen sessile ; legs densely hairy, especially 

 in 9 ; stigma not well developed, second submarginal cell receiving 

 the first recurrent nervure at apex ; % antennse longer than in 9 • 



Hubropoda Smith. 



8.- -Stigma well developed, lanceolate 9. 



Stigma not well developed, short and often subobsolete. 14. 



9. — Second recurrent nervure strongly sii uose, the lower half bulging outwardly 

 toward.s the ape.K of the wing ; posterior tibiae without knee plate ; 



maxillary palpi 6-jointc(i C'olletes Latr. 



Second recurrent nervure either straight or obliquely inclined inwardly; 



maxillary palpi 6-jointed 10. 



10. — First submarginal cell conspicuously longer than the third, and generally 



as long as the .second and third combined 11. 



Fii-st submarginal cell about as long as the third 13. 



11. — Basal nervure of anterior wings olitusely bent or rounded posteriorlj' 12. 



Basal nervure straight or nearly so ; clypeus of % not prom inent or pro- 

 longed, the face generally with long dense pubescence. 

 Apical joint of antennie obliquely truncate ; ocelli placed in a curve. 



CiliMsa Leach. 

 Apical joint of antennse not obliquely truncate ; ocelli placed in a triangle. 



A lid re 11 a Fabr. 



]"2. — Body, or at least the thorax, metallic green or blue. -— ^ - 



First recurrent nervure received at the extreme base of the third sulmiar- 



• ginal cell, or uniting with the second transveree cubital nervure, 



rarely recei' :d at the extreme base of the second submarginal cell : 



clypeus^ not prominent or prolonged; body entirely metallic blue 



or green Augoelilora Smith. 



TRANS. AMEE. KNT. SOC. (17) SUPPL. VOL. 1887. 



