NO. 1866. XEW SAWFLIE^ IN U. S. NATIONAL MUSEUM— ROHWER. 391 



and \vith the rounded lower wall broken; postocellar area convex, 

 bounded laterally by punctiform fovese; postocellar line longer than 

 the ocelloccipital but shorter than the ocellocular; antennse sub- 

 pilose robust, not tapering, third joint longer than the fourth; stigma 

 rounded beneath, tiTincate apically; claws with a small basal tooth; 

 hypopygidium broadl}^ subangulate apically. Black; clypeus, lab- 

 rum, palpi, and anterior tibiae and tarsi white; tegulse, legs except 

 most of posterior tibiae and tarsi, abdominal segments two to six 

 ferruginous. Wings dusky hyaline, iridescent; venation dark brown. 



Mexico. One male from the C. F. Baker collection. 



Type.— Cat. No. 13942, U.S.N.M. 



Genus STROMBOCEROS Konow. 



Stromboceros Konow, Wien. Ent. Zeit., vol. 4, 1885, pp. 19 and 20. 

 Waldheimia Kirby, List Hym. Brit. Mus., vol. 1, 1882, p. 326 (not Brull6). 

 Waldheimia Ashmead, Can. Ent., vol. 30, 1898, p. 307 (not Brulle). 



Brulle ^ in describing the genus Waldheimia named the genotype 

 Tenthredo hrazilensis Lepeletier. The type of Tenihredo hrazilensis 

 Lepeletier seems to have been lost, at least it is not in the Museum 

 of Paris, but Konow ^ places as a synonym of Lepeletier's species 

 his Monophadnus alveatus, wdiich should stand as a proxytype of 

 Tenthredo hrazilensis Lepeletier. This makes the genus fall in 

 Konow's Blennocampides and not near Strongylogaster, as Ashmead 

 and Kirby have it. Ashmead and Kirby probably followed the 

 figure of Waldheimia orhignyana BruUe ^ which belongs in Strom- 

 boceros sensu latoriore. 



Stromhoceros Konow may be divided into a number of species 

 groups. The following are in the material in the Museum: 



Key to Subgenera. 



Hind basitarsis much shorter than the following joints; (clypeus trimcate). 



Eustromboceros Rohwer. 



Hind basitarsis subequal with or longer than the following joints 1 



1. Clypeus distinctly emarginate Stromboceros Konow. 



Clypeus truncate or nearly Stromboceridea Rohwer. 



Subgenus STROMBOCEROS, Sensu Strictiore. 

 STROMBOCEROS (STROMBOCEROS) BARRETTI, new species. 



Female. — Length 6.5 mm. Clypeus with a V-shaped emargination 

 lobes broad, obtuse apicaUy; supraclypeal foveas connected with the 

 antennal foveas which are large and extend a little above the lower 

 border of the ocellar basin where they are bounded by a transverse 

 carina; antennal furrows nearly complete above the foveas; middle 

 fovea oval, well defined ; oceUar basin sharply defined, large, V-shaped, 



1 Hist. Nat. Insects Hym., vol. 4, 1846, p. 665. 3 PI. 46, figs. 8, 8a, 86, Hist. Nat. Insects Hym. 



2 Zeit. Hym. u. Dipt., vol. 4, 1904, p. 242. 



