56 PROCEEDINGS OF THE NATIONAL, MUSEUM vol.82 



Oil the central part of ventral surface of the head is very narrow, 

 similar to that of tibialis^ which it closely resembles in many respects. 



Length, G-T mm. 



Originally described from Onaga, Kans., U.S.N.M. No. 12856. 

 There is one paratype so labeled by Mr. Rohwer and bearing the 

 same number as the type, from Texas, which is not listed as a para- 

 type, though no doubt it is the specimen referred to in the conclud- 

 ing paragraph under the description as " the species recorded as 

 M'rmesa pauper by Cresson in Hymenoptera Texana." 



Other localities represented by material before me are as follows: 

 District of Columbia, Louisiana, Alabama, New Mexico, and Cali- 

 fornia. 



PSENIA TEXANA, new species 



Male and female. — Very similar to sayi and the species following 

 this, differing from the first named in the coarser sculptured upper 

 part of the mesopleura (eps 2) and from littoralis in having the 

 scutellum more highly polished, and no evident sensory elevation on 

 the second flagellar segment. The female in particular has the scu- 

 tellum highly polished and smooth as against the quite uneven and 

 dull surface of that part in littoralis. The hind tibiae in both sexes 

 have a lesser proportion of their base yellow than is the case in the 

 other species, but I do not place much dependence upon this as a dis- 

 tinguishing specific character. 



Lengih, 6-7.5 mm. 



Type (U.S.N.M. No. 44226), female, allotype, and one female 

 paratype, Brownsville. Tex., 1921 (J. C. Bridwell). 



PSENIA LITTORALIS, new species 



Male and female. — Shining black. Anteniuil flagellum yellow be- 

 low on entire extent in the male, and except on basal segment in 

 female ; facial hairs silvery white in both sexes. Mesopleura not so 

 distinctly shining as mesonotum. Abdomen shining black, apices 

 of first three and bases of second and third tergites rather narrowly 

 red in male, apex of first, all of second, and base of third red in 

 female. Femora black, in male partly yellow above and at apices 

 of fore and mid pairs, tibiae of fore and mid legs yellow, partly 

 browned below in female only, fore and mid tarsi yellow, apical 

 segment of mid pair brown in female ; hind tibiae blackened except at 

 bases; hind tarsi fuscous, the apices of all segments narrowly yellow. 

 Wings grayish hyaline, stigma and veins fuscous. 



Male. — Antennal flagellum not clubbed, longer than head and 

 thorax combined, the sensory areas almost linear, black, entire, pres- 

 ent on all but the basal and apical segments, and sometimes rudi- 



