134 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 5«. 



Of the twelve species remaining in the genus, H. eytelwdnii (Ratz- 

 burg), orci Girauit and microgaster Girault seem to be synonymous 

 with, flaminivs (Dalman), and H. ohscurus Howard in all probability 

 is a synonj^m of //. terminalis (Say), thus leaving eight valid names of 

 specific or subspccific rank, as the present or subsequent investigations 

 may show. These in he order of their inception are as follows: 

 //. iiaminius (Dalman), terminalis (Say), scymni (Shimer), alhitarsus 

 Gahan, mirabilis (Brethes), vicinus Silvestri, calif orniais Girault, and 

 oculat'us (Girault). In the following pages a substantia! addition is 

 made to this list by the characterization of eight new s}:)ocies. 



Genus HOMALOTYLUS Mayr. 



Homalotijlus Mayr. Verb, zool.-bot. Ges. Wien, vol. 25. 1876, pp. 680, 752.— 

 AsHMEAD, Proc. U. S. Nat. Mils., vol. 22, 1900, pp. 337, 344, .377; Mem. Car- 

 negie Mils., vol. 1, No. 4, 1904, pp. 301. 308. — Schmiedeknecht, Genera 

 Insectorum, Fasc. 97. 1909, pp. 212, 219, 2.35, 263, 267, pi. 5. figs. 5-6. 



Nohrimus Thomsok, Hymen. Scand.. vol. 4, 1876, pp. 116, 137. 



Mendozaniella Bkethe.s, Anal. Miis. Nac. Buenos Airea, vol. 24, 1913, p. 97. fig. 7. 



Hemaenasoidea Girault, Annals Entom. Soc. Amer., vol. 9, 1916, p. 307. 



Fem,ale. — ^Head subhemispherical, about as wide as the thorax, 

 usually a little longer than wide, the thickness fronto-occipitally 

 somewhat loss than one-half the length; as seen from in front the 

 outline is either nearly circular or broadly oval with the oral margin 

 trimcate, as seen from the side the curvature is nearly uniform from 

 the vertex to clypeus although often more abrupt at either end; the 

 occiput nearly flat or but slightly concave above, with the neck 

 inserted near the middle; the vertex narrow at the posterior ocelli, 

 the frons gradually increasing in width anteriorly, so that the anterior 

 corners of the eyes are separated by a space twice or more greater 

 than the width of the vertex; ocelli placed in an acute-angled or at 

 most an equilateral triangle, the posterior pair almost touching the 

 eye-margins; eyes large, narrowly oval, nearly or quite twice as long 

 as wide, posteriorly nearly touching the occipital margin and strongly 

 divergent anteriorly; cheeks short or about equal to one-half the 

 width of the eyes; face short and broad, entirely without antennal 

 scrobes, the antennae inserted rather far apart and close to the 

 clypeal margin, the space between their sockets moderately convex 

 yet never prominently elevated. Scape long and slender, about 

 equal to the length of the head or a little more, the radicle joint 

 about one sixth of the total length, the scape proper often slightly 

 curved on the basal half, the dorsal side convex, the inferior surface 

 flattened and grooved on the apical half or third for the reception 

 of the pedicel, the inner, inferior margin at the apex often laraellately 

 produced, but never more than slightly so; pedicel obconical, about 

 equal to the fu'st and a half or sometimes the whole of the second 

 funicle joint combmed; funicle six-jointed, cylindi-ical, never mcreas- 



