AETHROPODA OP THE COMMANDER ISLANDS. 339 



smooth and polished, except the petiole, which is subopaque and aclculated and as 

 long as the second and third segments united, the spiracles placed beyond the middle; 

 fourth segment shorter than the third, the following still shorter; the tip of the 

 abdomen is subcompressed. 



Type.— So. 3650, TJ. 8. N. M. 



Copper Island. Described from a single specimen, accession No. 30232, taken by 

 Dr, L. Stejneger August, 1895. 

 (11) Hedylws crassicornis, new species. 



J^emale.— Length, 3.75 mm. Black, shining; mandibles, legs, except coxae which 

 are black, and the hind femora which are fuscous, pale ferruginous; palpi and teguhe 

 yellowish white. Antennae 18-jointed, rather stout, subclavate, the scape black, the 

 pedicel and flagellum brown. Metathorax completely areolated, rather short, the 

 posterior angles somewhat acute, the areola hexagonal, a little wider than long. 

 Wings hyaline, the stigma and veins brown, the areolet very large, pentagonal, the 

 sides composed of the first and second transverse cubitr equal but considerably 

 shorter than the other three sides, base of third discoidal cell as wide as the base of 

 second ; hind wings with the transverse median nervure straight, not broken. Abdo- 

 men, except base of second segment, black; the body of abdomen is oval, polished, 

 impunctate; the petiole long, with the basal two thirds striate, the apex impunctate; 

 the second segment at base is red, while the venter is more or less yellowish or white; 

 ovipositor as long as the petiole. 



Type.— No. 4043, U. S. N. M. 



Bering Island, July, 1897 (Mr. Barrett-Hamilton). 



