220 E. T. CRESSON. 



abdomen, but easily separated by the two black spots at base of 

 clypeus. 



Bembex Sayi. 



Bembex Sayi, Cress. Proc. Ent. Soc. Phil, iv., p. 467. 

 One 9 specimen. (Belfrage.) 



Bembex Belfragei, n. sp. 



% . — Deep black, shining, head and thorax clothed with a fine, rather 

 dense pale silky down; clypeus and labrum sometimes entirely black, some- 

 times the former is entirely yellow or a yellowish-white spot on each side, and 

 the labrum sometimes yellow with the apex and central line, not reaching base, 

 black; generally the anterior and posterior orbits are narrowly yellowish; 

 mandibles more or less white on outer side, tips piceous; antennas generally 

 entirely black, only one specimen has the scape white beneath; thorax entirely 

 black, except sometimes a line on lateral posterior margin of prothorax curv- 

 ing around tubercles; metathorax very short and flat behind; tegulce black; 

 wings hyaline, narrow; legs dull yellowish-white, coxse and femora except tips 

 and a line on upper anterior edge, black; abdomen robust, first segment with 

 a large dull yellowish-white transverse spot on each side, more or less nar- 

 rowed within; second and third segments each with a transverse band of 

 same color, broad laterally and suddenly narrowed on the lateral anterior mid- 

 dle, and slightly interrupted on the disk; two or three following segments each 

 with a narrow undulate band also slightly interrupted medially; ventral seg- 

 ments with spot on each side, the second with a large flattened, more or less 

 hooked process, the terminal segment raised transversely with posterior edge 

 carinate and sometimes dentate, Length .75 inch. 



Five specimens. (Belfrage.) A very distinct species. 



Bembex moiwxlonla. 



Bembex monodonta, Say, Long's 2d Exped. ii., p. 335. 

 One $ specimen. (Belfrage.) 



Monetlula Carolina. 



Bembex Carolina, Fabr. Ent. Syst. ii., p. 249. 



Three S specimens. (Boll; Heiligbrodt.) 



>I unetl ala 4-fasciata. 



Monedula 4-fasciata, Say, Long's 2d Exped. ii., p. 336. 

 Seven S 9 specimens. (Belfrage, Boll; Heiligbrodt.) 



H cmedula ventralis. 



Monedula ventralis, Say, Long's 2d Exped. ii., p. 337. 



Fourteen % 9 specimens. (Belfrage.) The clypeus and mandi- 

 bles vary from entirely black to entirely yellow; the mesothorax has 

 sometimes two short yellow discal lines; the two spots on scutellum 

 are sometimes confluent, forming a broad band; the prominent angles 

 of metathorax more ar less broadly yellow, and in some specimens 

 there is an arcuate yellow line on upper middle, reaching from base of 



