254 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 99 



smooth and polished ; face about 2.50 times as wide as long, minutely 

 punctate, with a low median tubercle above ; clypeus slightly elevated 

 along basal margin, apical margin not notched, and slightly arched out- 

 wardly ; temple wider than eye in dorsal view ; galea short. Posterior 

 part of lateral face of pronotum rugose ; median lobe of mesoscutum 

 weakly elevated down the middle, the depression on each side of median 

 line weak or indistinct; notaulices finely foveolate; upper and lower 

 grooves of mesopleuron foveolate, posterior groove foveate, metapleu- 

 ron rugose, except on the small anterior portion which is minutely, 

 shallowly punctate ; propodeum rugose, carinae moderately prominent, 

 costulae present, areola rather narrow, spiracle ovate. First abscissa 

 of radius longer than that of basal vein; third abscissa of cubitus 

 slightly longer than fourth; nervulus postf ureal by about 0.67 its 

 length ; recurrent vein shorter than second abscissa of cubitus ; first ab- 

 scissa of submedius shorter than second ; interanal vein represented by 

 a short stump continued by a pigmented line. Second and fifth seg- 

 ments of fore tarsus about equal ; hind tibia broadened at apex but not 

 expanded into a flaring process; inner spur of middle tibia slightly 

 over half as long as basitarsus, second and fifth tarsal segments about 

 equal ; inner spur of hind tibia about half as long as basitarsus, basitar- 

 sus flattened and shorter than the last four tarsal segments, second tar- 

 sal segment longer than fifth ; hind tarsal claws pectinate basally. First 

 abdominal suture slightly curved to the margin ; second tergite shorter 

 than third medially; hypopygium in profile acute at apex, about as 

 long as the first two tergites combined, its median ventral line without 

 a longitudinal fold; ovipositor sheath about 0.75 as long as hypo- 

 pygium, longer than hind basitarsus, slightly pubescent, weakly de- 

 curved at apex (pi. 5, fig. 28). 



Male. — Essentially like the female. 



Type. — In the Academy of Natural Sciences of Philadelphia. 



In addition to the type, which is from El Paso County, Colo., the 

 author has studied specimens from Colorado, Kansas, Montana, Utah, 

 New Mexico, Texas, Iowa, and Arizona. 



CARDIOCHILES TENNESSENSIS, new species 



Female. — Length 6 mm. Head and thorax black, with broad outer 

 and incomplete, narrow inner orbital markings, and posterior half 

 of mesonotum, ferruginous; lateral face of pronotum and metanotum 

 also more or less ferruginous; wings dark fuliginous; coxae, trochan- 

 ters, and fore and middle femora black ; hind femur ferruginous ; fore 

 and middle tibiae and tarsi blackish, hind tibia ferruginous, broadly 

 blackish apically, tibial spurs ferruginous ; abdomen ferruginous ; ovi- 

 positor sheath black. Pubescence of head not especially long or thick, 

 chestnut-brown; antenna 36-segmented ; eye bare; ocelli elevated; 



