AMERICAN IIYMENOPTERA. 341 



11). L. semicincta. 

 Lycla semicincius, Xorton, Proc. Ent. Soc. Phil. i. 1802. 144. 9 • 

 Color black, with white sjiots and bands on tergum. Length .S.()4. Br. wings 

 0.74 iiicli. 



9. — Black; autenuie white, third joint hardly longer than fourth, 

 apical half of the two basal articles blackish ; orbits and back of head 

 white, except at summit; two dots back of ocelli and one beneath ; 

 two interrupted lines from orbits to ocelli, nasus and tip of labrum. 

 white; tegula3. edge of collar, V-spot, scutellum and behind, edge of 

 three apical segumeuts and sides of tergum white; legs white; middle 

 of femora and tips of tibia? and tarsi black; wings faintly clouded, a 

 smoky spot on upper pair below lanceolate cell. 

 A'^irginia. (Coll. Am. Ent. Soc.) One female. 



L'o. L. cavifrons. 



L}/du cavifrons, Cresson, Proc. Ent. Soc. Phil. iv. 1S65, 246, 3. 9 ■ 

 •' Black ; face, mouth, outer orbits, tegulse and legs pale luteous ; wings fusco- 

 hyaline; face concave. Length 4 lines. Br. wings 8 lines." 



9 . — Shining black ; head with a deep longitudinal furrow on each 

 side of the ocelli; extending from the base of the antenna; to the occi- 

 put, connected by a cross furrow behind the ocelli; face concave, the 

 margins prominent, subcarinate, with a longitudinal ridge in the middle 

 of the clypeus; the face, two spots above the base of antennae, clypeus, 

 labrum, mandibles, palpi, lower inner orbits, the outer orbits, interrup- 

 ted in the middle and extending on each side behind the eyes to the 

 occiput, yellowish or pale luteous ; antennae dull black, 27-jointed, the 

 scape beneath luteous, first joint stout, nearly four times longer than the 

 second. Thorax polished ; tegulae and a spot before it, pale luteous. 

 Wings ample, stained with pale fuscous, clearer at base, with a brassy 

 and iridescent reflection ; nervures black, pale at base, as well as tlie 

 costal nervure; marginal dividing nervure not coinciding with the 

 .'second submarginal nervure, the third brachial cell with an incom- 

 plete cress nervure ; legs pale luteous ; the coxae and the trochanters 

 except tips, black ; tarsi dusky at tips ; anterior tibiae without side 

 spur, each of the four posterior tibiae with three side spurs. Abdomen 

 .shining black; the extreme lateral margins of the dorsal segments and 

 the apical margins of the ventral segments pale luteous; extreme apical 

 segment testaceous. 



Colorado. (Coll. Am. Ent. Soc.) One female. 



2i. Lyda inconspicua, n. sp. 



Black, legs Juteous, wings hyaline. Length 0.32. Br. wings O.ofi inch. 

 9 . — Dull black ; antennae black, third joint one-half longer than 

 fourth, (joints beyond the sixth wanting) head blacky coarsely pitted, 



