mens of a very handsome aplieliniiie were reared from scales found 

 upon a crab-apple tree on the grounds of the Department of Agricul- 

 ture. 



This parasite proves, on careful examination, to be identical with a 

 form des(;ribed by Mr. Ashmead as Centrodora clisiocampa' (Proc. Ent. 

 Soc. Wash., vol. iii, p. 10). The opportunity which this rearing has 

 afforded for a close study of fresh specimens shows that it does not 

 belong- to Fiirster's getius Centrodora and I have felt obliged to erect 

 a new genus to contain it. It is described below as Ablerus clisiocampa' 

 (Ashm.). The specific name is unfortunate in its signification, since, in 

 my opinion, the true host is Chionaspis, and not the egg stage of Clisio- 

 campa. 



Fig. 2.—ProspaUainurffHdtiin. sp. : female, greatly enlarged (original). 



Prospalta* gen. nov. 

 Female. — Anterior wiugs with no oblique, transverse, hairless line below stigma. 

 Auteuuii' 8-jointed; club Sjointed; 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; scapulte extending anteriorly to swelling of parapsides; metascutellum broad 

 and short; legs rather stout; all tarsi short; tirst joint of hind tarsi only as long as 

 second ; lirst joint of middle and front tarsi longer than second. Ovipositor slightly 

 extruded. Wiugs 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 4.5° 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 teguhe to tip of abdomen. 



Prospalta murtfeldtii u. sp. 



Female. — Length, 0.69'""'; expanse 1.7™"'; greatest width of fore- wing, 0.3""". 

 Surface of body nearly smooth; scutellum slightly shagreened. General color 

 light yellow ; mesoscutum with brownish patch covering entire disk ; mesoscutellum 



* ITpoCTTaAr*/, nom. prop. 



