AMERICAN HYMENOPTERA. 45 



yellow, teeth numerous and minute; posterior tibiae yellow, brownish near 

 base; abdomen shining, piceous-blaek, with an abbreviated yellow band at 

 base of second segment; petiole short, stout, black. Length .20 inch. 

 Hub — Delaware. One specimen. 



10. Smicra lauta, n. sp. 



9 • — Black : head white, lower margin of face brownish ; a spot on middle of 

 front, spot covering ocelli, confluent with occiput, and tips of mandibles black ; 

 antenna? black, scape white beneath ; thorax with rather sparse, not deep, punc- 

 tures, shining; posterior margin of prothorax dilated laterally, four longitudinal 

 stripes on mesothorax, scutellum except base and apex, and the tegulae, white; 

 scutellum large, rouuded at tips, depressed centrally; wings tinged with dusky ; 

 four anterior legs white; posterior coxa? black beneath, dark red above, their 

 femora black, with a large irregular spot above at tip, a small rounded spot be- 

 neath and an elongate spot at base beneath, white, inner side reddish with two 

 whitish spots near tip which is black, teeth numerous and small; posterior 

 tibiae dull ferruginous, their tarsi whitish; abdomen smooth and polished, 

 pointed at tip, rufo-piceous ; petiole very short and stout, yellowish-ferrugi- 

 nous. Length .25 inch. 



Hub. — Mexico. (Prof. Sumichrast.) One specimen. A very 

 handsome and distinct species. 



20. Smicra Xortonii. n. sp. 



%■ — Head lemon-yellow, space behind antennae, vertex except a short line 

 before each posterior ocellus, occiput, a small oblique spot beneath base of each 

 antenna, lower margin of cheeks narrowly and tips of mandibles, black ; scape 

 black above, yellow beneath, (flagellum wanting); thorax broad, robust, with 

 large, dense, coarse punctures; prothorax yellow; mesothorax black, with 

 four narrow yellow stripes, the two central ones oblique, converging and abbre- 

 viated behind, almost contiguous; scutellum yellow, with a large longitudi- 

 nally ovate black discal spot; metathorax black with apex yellow; pleura black, 

 a spot beneath wings and the large prominentconvex swelling behind, yellow ; 

 tegulae pale yellow, pupilled with brown; wings yellow-hyaline; legs lemon- 

 yellow, posterior coxae with a broad black stripe above and beneath, not reach- 

 apex ; their trochanters black; their femora large, oblong, irregularly black at 

 base, as well as the inferior margin which has about ten irregular teeth, on in- 

 ner side the base is obliquely black and with a short oblique central band ab- 

 breviated above ; their tibiae pale fuscous at the extreme base ; abdomen banded 

 alternately with black and yellow, the first segment with two blackish spots at 

 base; petiole short, reddish-brown, yellow above. Length .35 inch. 



Eab. — District of Columbia. (Coll. Mr. E. Norton.) One speci- 

 men. This fine species, which at first sight closely resembles the 

 three following, may be distinguished at once by the yellow posterior 

 femora being black only at base on outer side. 



21. Smicra coxalis, n. sp. 



%. — Black, profusely marked with lemon-yellow; face transversely rugose, 

 lemon-yellow, with two approximate blackish marks above clypeus; space be- 

 hind antennae covering vertex and occiput black; scape lemon-yellow beneath ; 



