PROC. ENT. SOC. WASH., VOL. 21, NO. I, JAN., 1919 '.', 



Family EULOPHIDAE. 

 Subfamily ELACHERTINAE. 

 Apterolophus new genus. 



Antennae inserted at the clypeus, 11-jointcd, consisting of a slender scape, 

 elongate pedicel, three distinct ring-joints, a .'j-jointed funicle, and a 3-jointed 

 club. Head viewed from in front approximately as long as broad; antennal 

 depression broad and deep, extending to the front ocellus; viewed from above 

 the head is transverse, ocelli small, in an obtuse triangle, the lateral ocelli 

 distant from the eye margins, occiput concave and immargined; ma idibles 

 both tridentate, the ventral tooth acute and prominent, the two dorsal teeth 

 very minute, dorsal margin of the mandible with a deep emargination near 

 the middle; thorax somewhat flattened, pronotum short, more or less conical 

 with a marginal row of about six stiff bristles; mesoscutum broader than long, 

 only slightly convex, without a median groove, but with the parapsidal 

 grooves deep and complete and with two pairs of stiff bristles on the prae- 

 scutum, the axillae each with a single bristle; scutellum broader than long, 

 only slightly convex, without any longitudinal grooves and with two pairs 

 of widely separated bristles; metanotum short; propodeum short, granularly 

 opaque, with a weak median longitudinal carina; wings reduced to mere 

 scale-like appendages which barely extend beyond the base of abdomen; 

 legs moderately slender, tarsi four-jointed, the hind tibiae apparently with 

 two spurs, one of which is very minute; abdomen sessile, as viewed from above 

 short, nearly circular in outline and usually broader than the thorax, the dor- 

 sum nearly flat; ovipositor wholly concealed. 



Type of the genus. Apterolophus pulchricornis, new species. 



Apterolophus pulchricornis, new species. 



Female. Length .9 mm. Vertex and antennal depression smooth, checks 

 and inner orbits very faintly sculptured; occiput finely reticulate; inesoscutum 

 and scutellum faintly reticulate; metanotum and propodeum very fimlv 

 granularly opaque; abdomen smooth. Antennal pedicel more than twice 

 as long as thick and equal to or very slightly longer than the first funicle 

 joint which is distinctly the longest of the funicle joints; joint two of the funicK 1 

 very slightly longer than joint three, the latter about one and one-half times 

 as long as thick; club conico-cylindrical, scarcely broader than the funicle, 

 a little longer than the two preceding funicle joints combined and 3-jointi . ! 

 the joints subequal in length; ring-joints all transverse, the third about twice 

 as broad as long and approximately equal to the other two combined. Scape, 

 pedicel, ring-joints and club white; funicle joints black; head black; entire 

 thorax and all legs pale testaceous; abdomen brownish black. Male unknown. 



Type locality. -Leeds, N. Y. 

 Type. Cat. No. 21910 U. S. N. M. 



