96 WM. H. ASHMEAD. 



Both recurrent nervures received by the second cubital cell, or the second 

 recurrent is interstitial with the second transverse cubitus. 



Second cubital eel! shorter than the first; labial palpi rather short, the 

 first joint shorter than joints 2-3 united ; tongue only slightly eniar- 

 ginate at apex Enryglossa Smith. 



Second cubital cell as long as the first or very nearly ; labial palpi elon- 

 gate, the first joint as long as joints 2-5 united ; tongue deeply trian- 

 gularly ernarginate Hy Ireoides Smith. 



3. Head seen from in front a little longer than wide, slightly narrowed below; 



frontal fovea?, distinctly long, linear; maxillary palpi 6-jointed. the 

 joints short, subequal; labial palpi 4-jointed Prosopis Fabr. 



4. Both recurrent nervures received by the second cubital cell, or the first recur- 



rent is interstitial with the first transverse cubitus; sometimes the 

 second recurrent is interstitial with the second transverse cubitus (very 

 exceptionally does the first recurrent joint the first cubital cell just 

 before the first transverse cubitus) ; maxillary palpi 6-jointed ; labial 

 palpi 4-jointed. 

 Stigma very small, inconspicuous or poorly developed, the transverse median 



nervure not interstitial 6. 



Stigma distinct, well developed, the transverse median nervure interstitial 

 or nearly with the basal nervure 5. 



.">. Maxillary joints short, subequal ; labial palpi 4-jointed, short, the first two a 

 little stouter and longer than the last two; head seen from in front a 

 little longer than wide, slightly narrowed below, the frontal fovese 



distinct, long, linear Prosopiw Fabr. 



Basal three joints of maxillary palpi stout, subequal, joints 3 6 much slenderer 

 and clavate; basal joint of labial palpi somewhat longer than the 

 second, joints 2-3 subequal, the last cylindrical. 



Stilpiiosoma Smith. 



6. First joint of maxillary palpi the shortest and stoutest joint, the third slightly 

 the longest, joints 4-5 subequal ; first joint of labial palpi the longest, 

 joints 2-4 subequal iVIeroglossa Smith. 



ERRATA. 



Page 55, line 32, for golden read pollen. 



58, " 20, for cleft mid tuft. 



61, " 5 from bottom, for graga read a raja. 



63, " 14. for Xenogloss read Xenoglossa. 



66, " 1, insert abdomen after third. 



68, " 4, for 16 read 15. 



72, " 13, for mediam read median. 



73, " 11, for Jarine read Juriue. 



