12 Annals Entomological Society of America [Moll V', 
this sculpture seems to be of specific value. It is not always 
exactly alike in the sexes of a species. 
In the tables I have used the coloration as far as possible, 
not because it is the most important, but because it is easily 
observable; and the more essential characters are described, or 
have been described by others. 
Most of our species were described many years ago by Mr. 
Cresson; Packard treated them very briefly in his ‘‘ Fossorial 
Hymenoptera’’; a few new species have been added by others 
since, but no synoptic table of the Eastern species. Viereck 
and Cockerell tabulated the New Mexico species, and Swenk 
those of Nebraska. Schletterer has revised the European 
forms, and there are various other tables of local faune. 
Many other species occur in the Eastern States, and I hope 
this table will serve to interest others in their collection. 
Through the kindness of Dr. Skinner, I have examined the 
Cresson types in the American Entomological Society at 
Philadelphia, and wherever I did not already possess the species 
I have inserted it in the table according to the specimen in the 
Cresson collection bearing the label, which specimen I consider 
the type. 
A few other species have been described from the Eastern 
States, principally by Smith, from Florida, and Georgia; his 
C. rufopicta is probably a good species allied to C. rufinoda, but 
much larger. Saussure has described two from Texas which 
are unknown to me. 
MALES. 
1. Hind femora pale on base, with a large black spot near apex; rarely spot on 
sentellum,. post-seutellwm “yell Oy cy areas eaten ete ten ciety eet a -rsiaue eee 19 
Hind femora, mostly dark, mostly pale, or dark on base................. 2 
2. Scutellum not spotted, but post-scutellum yellow; large species; enclosure 
MOt thANSVELSELYEEUSOSEr eel oie ele ner oie ete merece clenelsyocre gee ot roles 3 
Some koran sanenaleexel yrttelay yO S65 ao dnondHosnagd ooodoucauesoospegdsueuns 5 
3 Wings black; a large lateral spot on each side of face; scape of antenne black; 
hind Stemoraand sstigmeanalsomblackarmn itt eit ttre ierre fumipennis 
Wings sub-hyaline; face all yellow; scape of antenne yellow beneath; hind 
femora mostly yellowish; stignia\ yellows: meee eee 4 
4. Band on second segment of abdomen not emarginate, legs II and III wholly 
yellow; no tuft of golden hair on last segment....................... gnara 
Band on second segment of abdomen emarginate in front, femora II and III 
black on base; apical segment with tuft of dense golden pubescence each 
side, basal jomt ‘of hind) tarsus, cunved. nee eer tt re ees ee venator 
5. Enclosure irregularly, transversely rugose; stigma blackish; hind femora 
mostly black: small, coarsely punctateiwspeeiesmnnris tate stete = 2) entree 6 
Enclosure more or less smooth, or longitudinally striate................... 9 
6. ‘Basal segment of abdomen mostly reddisinemie ee ee cette te a -cie letanenete 7 
Basal segment black, sometimes with a spot or band of yellow............. 8 
7. Band on second segment of abdomen not emarginate................ rufinoda 
Band on second segment emarginate in front........................ blakei 
