AMERICAN HYMENOPTERA. 87 



Description of a new species of JIASARIS. from California. 



BY E. T. CRESSON. 



Masaris Edwardsii, n. sp. 



9 . — Black, opaque, head and thorax clothed with a short blackish 

 pubescence; orbits, filling up sinus of eyes and slightly interrupted 

 at summit, a subtriangular spot on middle of front, clypeus except a 

 large U-shaped black mark on disk, and mandibles except tips, pale 

 lemon-yellow; the black mark on clypeus is sometimes slightly con- 

 fluent above with the black on each side of the face, thus forming a 

 slender yellow T ; apex of clypeus deeply arcuate ; labrum pubescent, 

 fuscous, edged laterally with yellowish ; antennae short, clavate, black- 

 ish above, fuscous or fusco-testaceous beneath, the three or four basal 

 joints beneath more or less yellowish ; anterior and upper margins of 

 prothorax, confluent in front and broad anteriorly, two short lines or 

 dots on disk of mesothorax, broad posterior margin of scutellum, some- 

 times two dots on postscutellum, metathorax except two large spots 

 on posterior face, a large irregular mark on each side of pleura, and 

 the tegulas, all lemon-yellow; metathoracic spines long, slender, sub- 

 acute ; wings fusco-hyaline, the marginal and first submarginal cells 

 darker; spot on coxae, femora except base and stripe behind, tibiae 

 and tarsi lemon-yellow, tarsi dusky beneath, their tips honey-yellow ; 

 abdomen very finely and densely punctured, segments 1 — 5 each with 

 a broad continuous apical lemon-yellow band, that on first segment 

 uneven anteriorly, sometimes enclosing two black dots, those on re- 

 maining segments sometimes slightly emarginate on anterior middle ; 

 apical segment broadly rounded at tip, with a broad central band ; 

 venter banded with yellow, the apical segments with two yellow spots. 

 Length .40 — .45 inch. 



S . — Longer than £ , shining, more thickly pubescent; orbits, fill- 

 ing in sinus of eyes and slightly interrupted at summit, a large tri- 

 angular spot on middle of front sometimes confluent on each side 

 above with orbits, clypeus, mandibles and basal joint of antennae, 

 flesh-color or yellow; middle of front prominent, with a central black 

 dot; clypeus smooth, convex, apex deeply arcuate; labrum yellow; 

 antennae longer than head and thorax, pale yellow tinged with fulvous 



