8 PROCEEDINGS OF THE NATIONAL MUSEUM vol.80 



Redescribed from 8 males and 10 females in the National Mu- 

 seum collection. The type series consists of 3 males and 4 females, 

 Woods Hole, Mass., bred from Hylotoma humeralis Beauvois by 

 H. G. Dyar. Three additional males were bred from Arge sp. at 

 East River, Conn., by C. R. Ely; 4 females bred at Falls Church, 

 Va., from Arge sp., by Carl Heinrich; 1 female bred at Westerly, 

 R. I., by workers at the Gypsy Moth Laboratory. One female was 

 collected at Miami, Fla., by Townsend ; 1 male at La Fayette, Ind., 

 by myself; and 1 male from Massachusetts has no collector label. 



ry^e.— Male, U.S.N.M. No. 4061. 



SPATHIMEIGENIA NIGRIVENTRIS Smith 



Spathimeigenia nigrwentris Smith, Psyche, vol. 24, p. 139, 1917. — Johnson, List 

 of the Diptera of New England, p. 185, 1925. 



Described from a single female in the collection of ihe Massachu- 

 setts Agricultural College, presumably from Massachusetts. The 

 type has been generously loaned to the National Museum for my 

 examination. The pollen of the front is cinereous, not yellow. There 

 are absolutely no discal bristles, even minute ones. The fourth 

 abdominal segment is wholly black; the keel is well developed, bear- 

 ing on the third segment four pairs of blunt spines, and on the fourth 

 segment two pairs, the second segment with about two somewhat 

 longer and less blunt. The apical cross vein is not so oblique as in 

 spinigera and the others, sharing this peculiarity with texensis. 

 Infrasquamal setules absent. For other characters, see original 

 description. 



SPATHIMEIGENIA EEECTA. new species 



Male. — Front narrow (0.21 and 0.23 of head width in the two speci- 

 mens) ; parafrontals light yellow poUinose, the parafacials, cheeks, 

 and posterior orbits subsilvery; antennae black, third joint twice 

 the second, slightly upturned and pointed at tip; last three ab- 

 dominal segments with a one or two pairs of discals and several much 

 smaller erect large hairs or very small bristles; a longitudinal area 

 between the discals is changeable in color from the median line, one 

 half looking dark when the other is light, and reversing when viewed 

 at a different angle. Fourth segment very obscurely reddish at tip. 

 Sides of abdomen reddish in ground color toward base. Otherwise 

 as in spinigera. 



Length, 7.4 mm. 



Female. — Unknown. 



Described from two males, reared at Kalamazoo, Mich., from 

 Neodiprion sp. by R. A. Todd. Date of emergence, August 27, 1903. 



Ty^e.— Male, U.S.N.M. No. 43356. 



