AMERICAN HYMENOPTERA. 61 



Descriptions of new North American HYIIEIVOPTEBA in 

 the collection of the American Entomological Society. 



BY E. T. CRESSON. 



Family APID^. 



Panurgus chalybaeus. — 9. — Steel-blue, sometimes tinged with dark 

 green; head and thorax opaque, very densely punctured, clothed with long 

 whitish pubescence, mixed with black on the face; head wider than thorax, 

 anterior orbits broadly black, subdepressed and silvery-sericeous in certain 

 lights; face very broad; mandibles reddish at tips; scape of antennae densely 

 clothed with black pubescence, flagellum sometimes testaceous beneath; meta- 

 thorax truncated posteriorly, uniformly and densely' punctured ; tegulse shining 

 black; wings hyaline, faintly dusky at tips; marginal cell pointed at tip, second 

 submarginal cell nearly as long as the first submarginal cell, receiving the first 

 recurrent nervure about one-fourth from the base and the second about one- 

 fifth from the tip; legs black, clothed with long whitish pubescence; abdomen 

 elongate-ovate, depressed, shining steel-blue, densely and minutely punctured, 

 clothed with appressed pale glittering pubescence longer on the sides and more 

 conspicuous on the apical margins of the segments, apex fimbriated with long 

 pale pubescence; venter tinged with brown, the segments fringed at apex with 

 long pale hairs. Length .40 — ^.50 inch. 



% . — Smaller, more pubescent, the face with only a few black hairs on lateral 

 margin; antennae longer, scape with whitish pubescence; abdomen with erect 

 pubescence longer at base. Length .30 — .40 inch. 



Hab. — California, (Henry Edwards). Seven specimens. Easily 

 distinguished from all other species known to me by the steel-blue 

 color of the body. 



This as well as all the following species described under this genus, 

 have the mai-ginal cell long and pointed at apex. 



Panurgus maurus. — J. — Entirely deep black, shining, feebly punc- 

 tured, clothed with a short sparse black pubescence, longer and more dense on 

 face and cheeks; head rather wider than thorax, face broad, clypeus truncate at 

 apex and fringed with pale pubescence; enclosed space at base of metathorax 

 finely longitudinally striated; sides of thorax near intermediate coxse with a 

 short obtuse tubercle; tegulse polished black; wings hyaline, faintly dusky at 

 tips, second submarginal cell much narrowed towards marginal, receiving the 

 first recurrent nervure near the base and tiie second about one-fifth from the 

 tip; legs robust, clothed with short black pubescence, posterior femora armed 

 with a short subacute tooth at extreme base beneath, their tibiae rather sud- 

 denly dilated beneath before apex; abdomen smooth and shining, the apical 

 segments clothed with black pubescence. Length .35 inch. 

 Hub. — Colorado, (H. K. Morrison). Five specimens. 



TRANS. AM. ENT. SOC. VII. MARCH, 1878. 



