Robertson — Some Illinois Bees. 53 



Florilegus n. g. 



This is proposed for the reception of Melissodes condigna 

 Cr. It has the general character of Melissodes, but the max- 

 illary palpi are moniliform, five-jointed, the joints subequal. 

 The abdomen shows a metallic reflection. 



Anthedon n. g. 



This is proposed for the reception of Melissodes compta Cr. 

 The male has the antennae black, shorter than in Melissodes, 

 joints 3 and 4 subequal, the last joint is the longest in the 

 flagellum and is curved and produced to a point. In the 

 female the scopae consist of hairs which are quite simple, not 

 plumose as in Melissodes. The fasciae of abdomen are about 

 alike in both sexes. Otherwise as in Melissodes. 



Melissodes atripes Cr. 



Epimelissodes atripes Asbmead, Trans. Am. Ent. Soc. 26: 63. 1899. 



Mr. Ashmead makes this the type of a new genus. His 

 description of the venation is correct for only certain indi- 

 viduals, perhaps a majority, but in some specimens the first 

 submarginal cell is fully as long as the third. The maxillary 

 palpi are four-jointed. This species is closely related to 

 M. obliqua Say, which also has the maxillary palpi four- 

 jointed. 



Melissodes petalostemonis n. sp. 



5. — Related to and closely resembling M. communis Cr., 

 but is somewhat smaller and the mesonotum and scutellumare 

 without black pubescence. Also resembles M. comptoides, 

 but the pubescence is less fulvous above, and not dark on the 

 thorax beneath, the front and middle legs, and the hind meta- 

 tarsi beneath. Length 9-11 ram. 



Carlinville, Illinois ; 9 5 specimens. 



Emphor bombiformis Cr. 



Welissodesnigripes Smith, Brit. Mus. Cat. Hym. 2:311. ? (non ,^).lSSi. 

 Melissodes bombiformis Cresson, Proc. Acad. Nat. Sci. Phil. 1 878 : 2 19. J> 9 . 

 Emphor bombiformis Patton, Bull. C. S Geol. Surv. 5: i76. ,f> 9. 1879. 

 The male described by Smith belongs to Melissodes de- 

 sponsa. Cresson and I have supposed that the female was 



