222 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.43. 



inated; antennae 9-jointed, short, stout, thickening apically, third 

 joint much longer than the fourth; head and thorax coarsely punc- 

 tured ; metepimeron narrow, not nearly as high as the metepisternum, 

 the dorsal margin strongly curved, hardly reaching to the propodeal 

 spiracle; propodeum with a longitudinal suture; venation of normal 

 type; legs similar to those of Macropliya, hind coxae not quite as 

 large as usual for Macrophya; abdomen short, stout. 

 Type. — ZamacropTiya nigrilabris, Rohwer. 



ZAMACROPHYA NIGRILABRIS, new species. 



wSuperficially recalls Macropliya succincta Cresson. 



Female. — Length 9 mm. Labrum long, narrowly rounded api- 

 cally; clypeus polished, arcuately emarginate, lobes broad, truncate; 

 supraclypeal foveae small, close to the eyes, not confluent with the 

 antennal fovese ; supraclypeal area sparsely punctured, gentty convex, 

 higher above; head coarsely striato-punctate ; middle fovea and 

 antennal furrows obsolete; postocellar area sharply defined on all 

 sides, about twice as wide as long; postocellar line subequal with the 

 ocelloccipital line; third antennal joint subequal in length with the 

 two following; thorax closely, rather coarsely punctured; stigma 

 narrow, rounded below, truncate apically ; transverse radius strongly 

 curved, received a little beyond the middle of the third cubital cell 

 which is more than twice as broad at apex as at base and subequal 

 in length with the first and second on the cubitus; sheath rather 

 narrow, straight dorsally, rounded apically, oblique ventrally. 

 Black; most of clypeus, mandibles, scape, pedicellum, dorsal and ven- 

 tral margins of pronotum, most of scutellum, metepisternum, pro- 

 podeum, apical margins of third and following segments, trochanters, 

 four anterior femora beneath, tibise except at apex, tarsi (liind tarsi 

 infuscate), yellow; wings yellowish hyaline; venation pale brown, 

 costa and stigma (except base) ^''ellowish. 



Ilale. — Length 9 mm. Very^ like the female. Hypopygidium 

 broadly rounded apically. 



Meadow Valley, Mexico. Many specimens collected by C. H. T. 

 Townsend. 



Type.— C&t. No. 14621, U.S.N.M. 



A specimen labeled "Wooton 52" is probably from New Mexico. 



Genus TENTHREDO Linnaeus. 

 Subgenus LABIDIA Provancher. 



The name Lahidia Provancher can be retained as a subgenus only. 

 Separated from Tenthredo, as far as Neartic species are concerned, 

 by the short, clavate, seven or eight jointed antennae, and by having 

 the anal cell of the hind wings longly petiolate. 



