14 PROCEEDINGS OF THE NATIONAL. MUSEUM. vol.64. 



TEIBE CREMASTINI. 

 Genus XIPHOSOMELLA Szepligeti. 



Judging from the new species described below, this genus is, in 

 several respects, intermediate between Eiphosoma Cresson and Pristo- 

 merus Curtis. The lateral edges of the first tergite, although touch- 

 ing along the ventral median line, are not completely fused as in 

 Eiphosoma^ but leave a distinct suture. The stigma is relatively 

 broader than in Eiphosoma though narrower than in Pristomerus^ 

 and the radius originates at about its middle. The petiolar area is 

 much longer than in Eiphosoma. The areola is usually open at the 

 sides, though according to Szepligeti, it is closed in the genotype, 

 Xiphosomella hrasiliensis Szepligeti. The hind femur is stouter 

 and not attenuate at the base as in Eiphosoma^ and the tooth is be- 

 fore the apical fourth in the female and at about the apical third 

 in the male. The abdomen is in form about intermediate between 

 the two genera, being shorter and less strongly compressed than in 

 Eiphosoma and broader and more strongly compressed than in 

 Pri&tomerus. 



In general form and in more minute structure it is perhaps some- 

 what more closely related to Eiphosoma. 



XIPHOSOMELLA STENOMAE, new species. 



Will run to neither of Szepligeti's three species in his key,® 

 agreeing with hrasiliensis in the sculpture of the mesoscutum and 

 with holiviensis and cremastoides in the incomplete areola and dis- 

 tinct though short intercubitus. From the only other described spe- 

 cies, tahascensis Morley, it is immediately distinguishable in having 

 the mesoscutum black not red. 



Female. — Length 13 mm.; antennae 8 mm.; ovipositor 4 mm. 



Head broad and very thin, temples very narrow, the occiput oc- 

 cupying nearly the entire posterior surface; frons, vertex, and tem- 

 ples opaque shagreened; frons with a longitudinal welt on each 

 side next to the eyes ; face polished, sparsely punctate, mediall}^ longi- 

 tudinally elevated, nearly twice as wide as long ; eyes nearly parallel 

 within, the face very slightly wider than frons; cylpeus about half 

 as wide as face; distinctly separated, strongly convex, rounded at 

 apex, with a narrow reflexed margin ; malar space about half as long 

 as basal width of mandible; mandibles nearly as broad at base as 

 long with lower margin narrowly flangelike, upper tooth slightly 

 longer and larger than lower. Thorax short; pronotum polished, 

 deeply impressed laterally, epomia strong; mesoscutum polished 

 with very sparse punctures anteriorly, notauli very deep but fading 



«Ann. Mus. Nat. Hung., vol. 4, 1906, p. 120. 



