AMERICAN IIYMENOPTERA. 71 



black spot on the breast. Abdomen entirely red ; feet black ; wings 

 blackish ; upper pair at the end pale and transpai'ent, the nerves and 

 stigma black. It conforms in size with II. cseridascens (of Europe)." 



North America. Not seen. 



The ff. scufellata of Lepel. is thought by Klug to be identical with 

 this. It seems to approach closely to //. humeralis. 



C. Head rufovs. 



a. Thorax partly black. 



1. Abdomen 2Tartly black. 



17. H. lepida. 



Ili/lotoma Ujiida. Klug, Jahrbuch., 1834, 2.''.9, 53, %. 

 Testaceous ; spots on the thorax, a2)ex of abdomen and the tarsi black ; wings 

 yellow hyaline, at apex fuscous. 



S . Antennae black; the two basal joints and the head pale yellow; 

 a long, black spot on each side of the scutel ; the middle of the breast, 

 the four last segments of the abdomen, the spines on tibias and the 

 tarsi black ; wings as far as the middle pale yellow with yellow nerves ; 

 toward the tip blackish, with black nerves; stigma in the middle 

 black. 



Mexico. One male. 



This only differs from No. 13, H. semlfmcus^ in the color of the 

 head and the number of vitta3 on the thorax. 



2. Abdomen rufous. 



18. H. coccinea. 



Hyhtoma coccinea, Fab., Svst. Piez. 1S07, 24, 11. 

 "Coccineus, with the antennae exarticulate; antennae and legs black; wings 

 cyaneus. 



Form and size of//, enodis, (of I^urope). Antennfe thickened with- 

 out, black. Head coccineus. Thorax coccineus, with the back black. 

 Abdomen coccineus, immaculate. Wing obscure cyaneus, at the apex 

 hyaline. Legs black." 

 Carolina. Not seen. 



19. H. rubra. 



Ilijlotoma rubra, Klug, Berl. Mag. vi, 1814. 299, 21, 9; Jahrbucher, 

 231, 21. 

 "9- Coccineus; a dorsal thoracic sjiot, the antennae and feet black. Length 

 4J lines. Br. 9 lines. 



The ground color of the body is cinnabar red; mandibles yellow-red, 

 with black teeth ; on the thorax a black spot covers most of the middle 

 lobe and summits of the two side lobes ; tegulfe black ; the breast is 

 without spots, the abdomen wholly red, the legs black, the wings brown 

 running into blackish, with darker nerves and stigma." 

 New York. One female. Not seen. 



