176 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.43. 



CLOSTEROCERUS WINNEMAN^ffi, new species. 



Female. — Length about 1.12 mm. Varying shades of purple and 

 blue, with the head above largely greenish and some greenish tints 

 on the mesothorax; mesonotum with a broad medial longitudinal 

 black stripe bordered on each side by a narrow stripe of green; head 

 laterad of the oceUi polished, almost nonscidptured (the highest power 

 of the binocular microscope showing a small area of indistinct reticu- 

 lations); mesonotum with crowded punctures, medially coarser and 

 resembling reticulations; inner half of parapsidal areas transversely 

 rugulose; pimctures laterad on scutellum much finer than those mesad; 

 metanotum and propodeum smooth, the former distinctly shorter than 

 the propodeum, which has no trace of a neck; wings trifasciate, one 

 band at the apex of the wings, one at the stigmal vein and the third 

 about half way between the base and apex of the marginal vein; 

 legs brownish with a purplish luster; the apical haK of the anterior 

 tibiae and aU tarsi, except apices, whitish; abdomen black with the 

 lateral margins broadly purple. 



Male. — Length about 1.0 mm. Similar to the female, but the 

 mesonotum largely greenish and the median black stripe replaced by 

 a narrower brownish one. 



Type-locality. — Plummer's Island, Maryland. 



Reared from the eggs of Arge solids Rohwer, together with Winne- 

 mana argei Crawford. 



In having a median black stripe on the mesoscutum this species 

 resembles C. tricinctus Ashmead, but that species has the propodeum 

 with a short but distinct neck defined by a carina at each side, the 

 metanotum delicately but distinctly sculptured, and fully as long as 

 the propodeum from the base to the beginning of the carinas which 

 bound the neck of the propodeum. 



Type.— C&t. No. 14787, U.S.N.M. 



HORISMENUS URICm, new species. 



Female. — Length about 1.5 mm. Very dark blue-green, the meso- 

 notum in certain lights appearing aeneous; face below V-shaped fur- 

 row with thimblelike punctures; above it with two lines of similar 

 shallower punctures extending upward as far as the anterior ocellus; 

 between these two lines of punctures and laterad of them the face 

 smooth ; ocellar triangle finely reticulated ; scape white, rest of anten- 

 nae, green,; pedicel about as long as first joint of the funicle; the fol- 

 lowing joints of the funicle slightly shorter than the first, subquad- 

 rate; mesoscutum delicately reticulated; scutellum on basal two- 

 thirds with similar indistinct sculpture; lateral grooves on scutellum 

 not extending mesad at rear, their caudal ends widely separated; 

 medial furrow not quite reaching apex of scutellum; propodeum 

 except extreme apex and the depressions on each side of median 



