Sphecoidea of Nebraska 77 
Cubitus in hind wings originating far before the transverse median ner- 
vure; front wings with the first and third cubital cells each receiving 
SMLGCH NEM Mery mci terer Gara oe alia trothe gales at a ete amit uae Mellinus 
Mellinogastra Ashmead 
Mellinogastra mellinoides (Fox). 
1895. Gorytes mellinoides Fox, Proc. Acad. Nat. Sc. Phil., p. 524. 
Females 1: Monroe Canyon, August 19, 1912 (R. W. Dawson). 
This specimen differs from Fox’s description in having no 
yellow on the apical margin of the third tergite and second ster- 
nite. It may prove to be a distinct species. j 
Mellinogastra williamsi Mickel. 
1916. Mellinogastra williamsi Mickel, Trans. Amer. Ent. Soc., XLII, 
p. 402. 
Males 1: Omaha, August 17, 1914 (L. T. Williams). 
Hypomellinus Ashmead 
Hypomellinus venustus Mickel. 
1916. Hypomellinus venustus Mickel, Trans. Amer. Ent. Soc., XLII, 
DP. 403. 
Males 2: Omaha (1) and Harrison (1); June 14 and August 
12; visits flowers of Chamaecrista fasciculata. 
Hypomellinus tricinctus Mickel. 
1916. Hypomellinus tricinctus Mickel, Trans. Amer. Ent. Soc., XLII, 
Dp. 404. 
Females 3: Omaha (3); August 3 to 5; visits flowers of 
Chamaecrista fasciculata. 
Mellinus Fabricius 
KEY TO THE SPECIES 
At least three basal segments of abdomen red; legs black and yellow; 
abdomen of female without yellow maculae ............... abdominalis 
Petiole only of abdomen red; remaining segments black with yellow 
maculae laterally; legs red and yellow .......6..se00cceeenees rufinodus 
Mellinus abdominalis Cresson. 
1881. Mellinus abdominalis Cresson, Trans. Amer. Ent. Soc., IX, 
p. 39. 
1894. Mellinus abdominalis Fox, Ent. News, V, p. 202. 
395 
