34 PROCEEDINGS OF THE NATIONAL, MUSEUM vol. 69 



deeper, and the propodeum is more strongly areolated than in most 

 specimens of sandus, the separating carinae being very prominent; 

 the scutellum is usually shorter and broader in texanns and has the 

 apical carina much more strongly developed. 



Head rather flat behind; eyes prominent, attaining the vertex; 

 third segment of labial palpi minute; antennae about 40 to 46 seg- 

 mented ; parapsidal furrows strongly impressed, the mesonotal lobes 

 prominent; propodeum coarsely regularly areolated, the median area 

 elongate-subtriangular, separated from the petiolarea; the lateral 

 areas well defined; mesopleural furrow usually broad and coarsely 

 foveate; the nervulus in the anterior wing varies from interstitial 

 with the basal vein to distinctly postfurcal; first abdominal tergite 

 with a small deep basal impression, which is usually not completely 

 margined 'by prominent carinae; the median longitudinal ridge 

 behind this basal impression varies from very weak to very promi- 

 nent ; ovipositor sheaths only a little longer than the abdomen. Head 

 and thorax black, the propodeum and metapleura varying from red 

 to black; anterior and middle legs black, their tarsi usually yellowish 

 in the male; posterior trochanters and tarsi black; posterior tibiae 

 varying from entirely black to almost entirely red; wings strongly 

 infumated; abdomen red. 



The above notes are based on the following material: The type, 

 which is from Texas, and three additional specimens, one from Illinois 

 and two from Georgia, in the Philadelphia Academy of Sciences; 

 one specimen, collected by C. W. Johnson at Danbury, Vermont, 

 in the Boston Society of Natural History collection; and more than 

 40 specimens in the United States National Museum, which are 

 from various localities in Texas, Louisiana, Georgia, Florida, Ala- 

 bama, Mississippi, Virginia, North Carolina, Maryland, New York, 

 Iowa, and British Columbia. 



Nothing is known of the host relationships of this species. 



6. BASSrS SANCTL'S Say 



Bassus sanctus Say, Boston Journ. Nat. Hist., vol. 1, 1836, p. 249. 



Type — Lost. 



As pointed out in the discussion under texanus, sanctus is very 

 similar to that species, but may be readily separated by the differ- 

 ences there mentioned. The brief general characterization of tex- 

 anus given above will apply to sanctus, with the following excep- 

 tions: Propodeum usually less coarsely areolated, the lateral areas 

 sometimes not distinctly defined; mesopleural furrow usually narrow 

 and more weakly foveolate; nervulus interstitial with basal vein or 

 very slightly antefurcal; ovipositor sheaths about as long as the body 

 or very nearly; propodeum and metapleura always yellowish ferru- 

 ginous. 



