26 
Subfamily ELACHISTIN A. 
The two genera mentioned under this subfamily may be separated as 
follows : 
AV OSUELIOLLUbI 2a) Wilby bW.O) SPULS e052 clos ae erste enters EUPLECTRUS. 
BP Eosterior cibievone-spurred cae ac25 Sole neeeee cere eee e ee eee ELACHISTUS. 
Genus EUPLECTRUS Westwood. 
Head triangular; eyes prominent. Antenne inserted below middle of face ; scape 
long; funicle 4-jointed. Thorax highly developed; mesonotum with a median 
longitudinal carina. Abdomen with a moderate, cylindrical petiole. Posterior tibia 
with two very long spurs. Body not metallic, but of dark color; head and thorax 
with sparse, coarse hairs. 
43. (1) Euplectrus comstockii Howard. 
Male.—Length, 1.98™™; wing expanse, 4.3™™; greatest width of fore wing, 0.8™™. 
Face triangular, narrowing sharply below eyes, smooth and glistening, with a very 
few punctures; antennal scape slender, not widened. Pronotum very rugose, except 
at posterior border; mesoscutum somewhat transversely rugose, with a strongly- 
marked median longitudinal carina; mesoscutellum smooth; metathoracie carina 
very pronounced and dividing posteriorly ; metatibial spine nearly as long as first 
two tarsal joints. Abdomen broadening from base and subtruncate at tip. Gen- 
eral color shining black with long stiff whitish hairs scattered over thorax; labrum 
honey-yellow; antennal scape light ho ey yellow, flagellum gradually darker, club 
quite dark at tip; all legs honey-yellow; abdomen with a dorsal yellow spot entirely 
bounded with black and of an irregular pyramidal shape, the base of the pyramid 
towards tip of abdomen; venter yellow-brown along median line 
Female.—Slightly larger; abdomen more nearly ovate. 
Described from many ¢ 2 specimens bred from half-grown larve of 
Aletia xylina (Say) in Mississippi, Alabama, and Florida. [C. V. R. 
and Dept. Agr. Coll.] 
(See Report Department of Agriculture, 1880, Plate II, Fig. 4. See 
also Can. Ent., XII, p. 159, and Am. Naturalist, 1881, p. 16.) 
44. (2) Huplectrus leucotrophis, n. sp. 
Male.—Length, 1.25"™; wing expanse, 2.91™™; greatest width of fore wing, 0.58™™. 
Differs from E. comstockii in the following points: Mesoscutum very rugose; median 
carina scarcely visible; face, below eyes, and scape of antenne nearly white, slightly 
yellowish; all legs, including coxa, semi-transparent, whitish in color; the dorsal 
abdominal yellow spot extends to pedicel, and at its base widens ont to include the 
lateral borders of the abdomen; the venter is yellowish near base; elsewhere dark 
brown, nearly black. 
Described from 3 é specimens bred from unknown Aretiid larva, July 
19, 1880, received from Dr. R. S. Turner, Fort George, Fla. [Dept. Agr. 
Coll. } 
45. (3) Buplectrus platyhypene, n. sp. 
Female.—Length, 1.67™™; wing expanse, 3.8™™; greatest width of fore wing, 0.6™™- 
Differs from H. comstockii as follows: Pronotum markedly shagreened; mesoscu- 
tum only slightly roughened ; median carina distinctly visible; hind border of abdo- 
men well rounded. Color: Face entirely black; legs dark honey-yellow; hind cox 
