ABT. 2. ICHNEUMON-FLY GENUS METEORUS MUESEBECK. 15 



vulus is interstitial with basal vein; this character is variable, how- 

 ever, and of little significance; posterior coxae long, mostly polished, 

 with only scattered weak punctures; inner spur of posterior tibiae 

 about one-third as long as metatarsus; abdomen slender; the first 

 segment narrow, the petiole provided with a pair of small, narrow, 

 dorsal fossae; first tergite faintly roughened at base; weakly longi- 

 tudinally roughened posteriorly, shining; ovipositor sheaths less than 

 half as long as the abdomen. Uniformly ferruginous except the an- 

 tennae which are mostly fuscous; legs, including posterior tarsi, con- 

 colorous with the body; wings hyaline, stigma yellow, 



Male. — One antenna of allotype has 39 segments, the other 40; 

 the pro-, meso-, and metapleura are more coarsely roughened; 

 malar space about one-third the basal width of mandible; antennae 

 fuscous, scape testaceous below; stigma dark brown. 



Type locality. — Mount Washington, New Hampshire. 



Allotype locality. — Hanover, New Hampshire. 



Type.— C&t. No. 24967, U.S.N.M. 



Described from two specimens, the type with only the locality data, 

 the allotype labeled "Hanover, N. H., C. M. Weed." 



One other female specimen that appears to belong to this species, 

 and is labeled ''Wash. Terr./' is in the National Museum. The 

 ocell-ocular line is a little shorter than diameter of an ocellus, and the 

 posterior tarsi are a little infuscated. 



6. METEORUS COMMUNIS (Cresson). 



Periliius communis Cresson, Canad. Entom., vol. 4, 1872, p. 82, line 12. 

 Perilitus intermedius Cresson, Canad. Entora., vol. 4, 1872, p. 82, line 30. 

 Meteorus communis Cresson, Cresson, Synops. Hymen., N. Amer., 1887, p. 228. 

 MeteoTus intermedius L'resson, Cresson, Synops. Hymen., N. Amer., 1887, p. 229. 

 Meteorus petiolariferus Viereck, Bull. 22, Conn. State Geol. and Nat. Hist. 



Survey, 1917 (1916), p. 223. 

 Meteorus pretiosu^ Viereck, Bull. 22, Conn. State G^ol. and Nat. Hist. Survey, 



1917 (1916), p. 223. 



Type. — In the Philadelphia Academy of Sciences. The type of 

 intermedials is in the same collection; those of petiolariferus and pre- 

 tiosus are in the Connecticut Agricultural Experiment Station at 

 New Haven. A para type of pretiosus is in the collection of Bureau 

 of Plant Industry at Harrisburg, Pennsylvania. 



A thorough study of all the types convinces me that communis, 

 intermedius, petiolariferus, and pretiosus are the same species. The 

 rather marked difference between many males and the usual female 

 is doubtless responsible for the names, intermedius, petiolariferus , and 

 pretiosus, all of which were based on male specimens. Commonly, 

 in the male the stigma and the antennal flagellum are much darker 

 than in the female; the recurrent nervure often enters the first 

 cubital cell, while in the female it is normally interstitial with the 



