CLASSIFICATION OF THE BEES. 89 



6. Second cubital cell, along the cubitus, much smaller than the third, rarely 



much longer than half its length or even shorter 7. 



Second cubital cell, along the cubitus, as long as the third or even a little 

 longer. 



Second and third cubital cells equal, the former nearly quadrate, very slightly 

 narrowed above, and receiving the first recurrent nervure at the mid- 

 dle, the third cubital cell receiving the second recurrent a little beyond 

 its middle; maxillary palpi 6-jointed, the first joint the longest, the 

 following gradually decreasing in length; labial palpi 4-jointed, the 

 first joint the longest, the following shorter, subequal. 



< allomelittH Smith. 



Second cubital cell a little longer than the third, narrowed above and re- 

 ceiving the first recurrent nervure at its middle; the third cubital tell 

 also receives the second recurrent at its middle; maxillary palpi 

 6-jointed, the first joint longer aud stouter than the others, the follow- 

 ing successively becoming shorter and slenderer; antenna? clavate, the 

 scape short and stout, one-third shorter than the third joint. 



Gastropsis Smith = CEstropsis Smith. 



7. Submedian vein (or anal vein of some authors) in hind wings distinct to the 



hind margin; hind trochanters in 9 with a polleniferous flocculus; 



antennae in % not truncate at apex 8. 



Submedian vein in hind wings abbreviated, not extending to the hind mar- 

 gin ; hind trochanters in J without a polleniferous flocculus; antenna? 

 iu % sometimes truncate at apex. 



Head normal, not wider than the thorax ; abdomen truncate at base ; antenna? 

 in % truncate at apex, the joints subserrate or crenulate beneath. 



Hfelitta Kirby = Cilissa Leach. 



Head very large, transverse, much wider than the thorax ; abdomen rounded 

 at base; antennse in % filiform, neither truncate at apex nor crenulate 

 beneath Sphecopliala Sauss. (Type & philanthoides Sauss.). 



8. Stigma very minute. 



Second cubital cell very short, wider (higher) than long, receiving the first 

 recurrent nervure a little before the middle, the second recurrent 

 being interstitial or nearly with the third transverse cubitus, head 

 transverse, not so wide as the thorax; ocelli in a triangle; tongue 

 very short, densely pubescent, the paraglossse elongate, plumose; 

 labial palpi 4-jointed, short and stout; maxillary palpi 6-joiuted. 



1*1 iloglossa Smith. 

 Stigma distinct, not small. 



Marginal cell pointed at apex, its extreme apex attaining the costa ; sub- 

 median cell not quite as long as the median ; second cubital cell quad- 

 rate, receiving the first recurrent nervure at the middle, the third 

 cubital cell receiving the second recurrent nervure at its apical third : 

 abdomen above bare, the dorsal segments 2-4 delicately, but not 

 sharply depressed at apex; pygidial plate triangular, with a median 

 ridge; middle tibial spurs long, finely serrated; maxillary palpi 

 6-jointed ; labial palpi 4-jointed : superorbital fovea? wanting. 



Micrandreiia Ashm. n. g. (Type M. pacifica Ashm.). 



TRANS. AM. ENT. SOC. XXVI. (12) JUNE. 1899. 



