6 
mens of a very handsome aphelinine were reared from scales found 
upon a crab-apple tree on the grounds of the Department of Agricul- 
ture. 
This parasite proves, on careful examinatiou, to be identical with a 
form described by Mr. Ashmead as Centrodora clisiocampw (Proc. Ent. 
Soc. Wash., vol. in, p. 10). The opportunity which this rearing has 
afforded for a close study of fresh specimens shows that it does not 
belong to Forster's genus Centrodora and I have felt obliged to erect 
a new genus to contain it. It is described below as Ablerus clisiocampce 
(Ashm.). The specific name is unfortunate in its signification, since, in 
my opinion, the true host is Ohionaspis, and not the egg stage of Clisio- 
campa. 
Fig. 2. — Prosjjalta murtfeldtii n. sp. : female, greatly enlarged (original). 
Prospalta* gen. nov. 
Female. — Anterior wings with no oblique, transverse, hairless line below stigma. 
Antemne 8-jointed; club 3-jointed; all joints subequal in length ; first joint of club 
widest. Head transverse; ocelli at corners of an oblique angled triangle. Thorax 
wider than head; mesoscutar parapsides club-shaped, broadening suddenly on distal 
side; scapulae extending anteriorly to swelling of parapsides ; metascutelluin broad 
and short; legs rather stout; all tarsi short; first joint of hind tarsi only as long as 
second ; first joint of middle and front tarsi longer than second. Ovipositor slightly 
extruded. Wings long and broad; submarginal vein reaching nearly to middle of 
wing; marginal much shorter than submarginal; stigmal very short, its anterior 
border nearly parallel with costa, its posterior border extending into disk of wing 
at an angle of 45° with costa; outer margin of fore wing with rather short cilia; 
under margin of hind-wings with somewhat longer cilia. First abdominal joint 
much the longest; abdomen on the whole equaling thorax in length; whole body 
tapering gradually from tegulse to tip of abdomen. 
Prospalta murtfeldtii n. sp. 
Female.— Length, 0.69 mn ' ; expanse 1.7 mm ; greatest width of fore- wing, 0.3 mm . 
Surface of body nearly smooth; scutellum slightly shagreened. General color 
light yellow ; mesoscutum with brownish patch covering entire disk; mesoscutellum 
* UpbaKaTiTu, nom. prop. 
