22 PROCEEDINGS OF THE NATIONAL MUSEUM vol.71 



times as long as the first and three times as long as thick; third joint 

 equal to the second in length and very slightly thicker; club with 

 three distinct joints, the first and second each subequal to the third 

 funicle joint in length and approximately twice as long as broad, the 

 third a little longer than the others and conical in shape. Head not 

 quite as broad as thorax, apparently smooth; ocelli moderately large, 

 placed in a slightly obtuse triangle; praescutum distinctly reticulated 

 (under high power magnification) ; scutellum and axillae without 

 definite sculpture, the former with a deep median longitudinal groove; 

 wings ample, the longest marginal cilia of forewing very nearly equal 

 to half the greatest width of wing, submarginal and marginal veins 

 very nearly equal. Abdomen as broad as thorax and distinctly 

 longer; ovipositor sometimes very slightly exserted. General color 

 brownish black; head entirely, mesoscutum for the most part, axillae, 

 metathorax, propodeum and abdomen brownish black; scutellum pale 

 yellowish ; narrow borders of praescutum along parapsidal grooves, 

 scapulae, more or less of pleura, and to some extent the underside of 

 the thorax yellow but darker than the scutellum; antennae and legs 

 pale yellowish, the hind coxae brownish and the hind femora some- 

 times faintly dusky; wings hyaline, the venation dusky. 



Male. — Length 0.6 mm. Agrees with female except in antenual 

 characters. Antennae nearly as long as the body, 8-jointed, scape 

 slender, pedicel one and one-half times as long as broad at apex; first 

 flagellar joint very nearly twice as long as the pedicel; second, third, 

 fourth, and fifth joints subequal, about three times as long as broad 

 and each very slightly longer than the first; apical joint conical and 

 a little shorter than the preceding. Abdomen about equal to the 

 thorax in length. 



Tyve locality. — Agricultural College, Michigan. 



Coty pes. —Csit. No. 29447, U.S.N.M. 



Host. — CMonaspis pinifoliae (Fitch) 



Described from 36 specimens, 19 females and 17 males, mounted in 

 balsam on two slides, received from Prof. R. H. Pettit, of the Michi- 

 gan Agricultural College, and said to have been reared June 28, 1924, 

 from the above-mentioned pine leaf scale on Pinus strohus. Accord- 

 ing to Professor Pettit the parasite was very abundant. 



PROSPALTELLA CILI.iTA, new species 



Resembles ( Mimatomus) Prospaltelh, peltatus Cockerell in having 

 the marginal fringe of forewing short, the longest marginal cilia being 

 approximately one-sixth as long as the grr.itest width of wing, but 

 differs from peltatw^ as well as all other species known to the writer 

 by having the discal cilia behind the marginal vein more obviously 

 longer and somewhat coarser than those toward apex of wing. The 



