54 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 82 



PSENIA MARGINATA, new species 

 Pl>ATE 2, FiGUKE 40 



Male and femoJe. — Very similar to rufibasis^ but that species is 

 readily distinguished in both sexes by the predominantly red color 

 of the basal two segments on the abdomen, even the petiole being 

 chestnut-red. The petiole in tnarginuta is glossy black, the first ter- 

 gite is narrowly and the other tergites more broadly testaceous at 

 apices, though in one male the pale apices are more red than yellow. 

 The femora in both sexes of typical examples are largely black or 

 dark brown, paler at apices of the fore and mid pairs, and the tibiae 

 and tarsi are yellow, the hind tibiae largely black beyond the whitish 

 yellow basal third. Facial hairs of female yellowish white. 



In structure there is very little difference between this species and 

 ruflbasis, the coarse sculpture of the entire thorax setting them apart 

 from other closely allied species. Apical sternite of male as in plate 

 2, figure 40. 



Length, 7-9 mm. 



Type (U.S.N.M. No. 44225), female, allotype, and six paratype 

 males, Louisiana, no other data (Baker collection). Paratypes, male 

 and female, Opelousas, La., no other data (G. R. Pilate), and Ye- 

 massee, Buckfield Plant., S.C, October 1, 1926 (J. T. Rogers). 



The last listed specimen is a male that is larger than the others, 

 10.5 mm, and has the femora with the exception of the extreme bases 

 of the hind pair fulvous-yellow. I do not care to consider it as 

 other than a variety of marginafa. 



PSENIA BREVIPETIOLATA (Rohwer) 

 Plate 2, Figure 41 



Psenulus {Neofowia) irevipetiolatus Rohwee, Proc. Ent. Soc. Washington, vol. 

 12, p. 100, 1910. (Female.) 



I have examined the type specimen in the National Museum, and 

 though the abdomen has been broken off through the petiole and 

 rather badly glued together the characters are suflficiently well pre- 

 served to enable me definitely to place it in the key and to determine 

 another female now before me as belonging to the species. The very 

 finely sculptured eps 2 of this species is distinctive, this part of the 

 mesopleura appearing granulose even under a very high-power lens, 

 the lower part, eps 1, being very finely shagreened or alutaceous and 

 furnished with sparse small punctures. The propodeum has thf» 

 enclosure with rugae, and the lateral areas finely striate (pi. 2, fig. 

 41). The petiole of the abdomen is about half as long as the swollen 

 part of the segment and not more than half as long as the hind 

 femur ; apex of second and base of third tergite red ; pygidium about 



