22 
Genus Homalotyltts Mayr. 
Female. — The antennae are given off near the border of the mouth; the pedicel is 
somewhat longer than the first fanicle joint; the 6-jointed funicle has cylindrical 
joints, which increase more or less in thickness toward the club ; the club is obliquely 
truncate from the tip to the base, or nearly to the base. The head is thin (fronto-occip- 
itajly) : the facial groove is very delicate or is wanting (H. flaminius). The eyes are 
much farther apart below than above. The ocelli form an acute or a right-angled tri- 
angle. The face, and especially the clypeus, not broad, covered with very fine and 
thick punctulations, and with larger punctures in rows or irregularly placed. Meso" 
notum finely shagreened and moderately shining. The axilla} meet only in a point, 
or are far apart. The ovipositor is hidden. The hind femora have a longitudinal 
groove for the reception of the hind tibiae. The marginal vein is very short, or is 
wanting. The stigmal is rather long. 
Male unknown. 
35. (1) Homalotylus obscurus, n. sp. 
Female. — Length, 1.86 mm ; wing expanse, 3.8 mni ; greatest width of fore wing, 
0.58 mm . Antennal scape, very long and slender ; pedicel somewhat more than twice 
as long as thick; first funicle joint one-third longer than thick; sixth funicle joint a 
trifle thicker than long ; all funicle joints cylindrical, and increasing slightly in thick- 
ness and decreasing in length from joint 1 to joint 6; club as long as the preced- 
ing three joints together, obliquely truncate from tip quite to base. Facial groove 
entirely wanting. Ocelli form an acute-angled triangle. The larger punctures of the 
head are irregularly placed. The axillae meet at their apices only. First joint of 
middle tarsus as long as all the succeeding joints together, and only slightly incras- 
sated ; middle tibial spur stout, and longer than the first tarsal joint. Color : Antennal 
scape, pedicel, and funicle black, club yellowish-white ; face yellow-brown, with a 
metallic luster behind the eyes ; pronotutn and mesoscutum black, with a faint 
golden luster ; mesoscutelluin and axillae dead-black, owing to the very close fine 
punctures ; tegnlae black at tips, brown at bases ; metanotum and dorsum of abdomen 
black: venter of thorax dark honey-yellow, of abdomen black; all coxa? and femora 
dark brown ; all tiba> black ; front and hind tarsi black ; middle tarsi, except fifth 
joint and middle tibial spur, white or yellowish-white. Fore wing with a large 
subcircular dusky spot in the middle, including stigmal and marginal veins, and 
with a narrow, clear, hairless streak extending transversely and proximally from 
marginal vein to near the hinder border of the wing ; cilia very short. 
Described from 13 9 specimens bred from Coccineilid larvae, in all 
probability those of Cycloneda sangninea L., at Centreville, Fla., by 
Mr. H. G. Hubbard. From two to five of the parasites were bred from 
each of the parasited larvae. [0. V. R. Coll. J 
Of the three European species of Homalotylus, the only one whose 
habits are known, H. flaminius (Dahnan), lives in Coccineilid larvae ; and 
Walker (Eutom. Mag. V, 1838, p. 54) states that he has bred it from 
Oaleruca calmariensis, an insect which, though very abundant, has never 
been found parasited in this country. 
Genus Leptomastix Forster. 
Female. — The antennae are very long, as long as or somewhat longer than the body, 
slender and clothed with short hairs ; the pedicel is twice as long as thick ; each of 
