210 WILLIAM H. ASHMEAD. 



Otacustes periliti sp. n. 



9 • — Length 5 mm. ; ovip. 0.6 mm. Head, thorax, legs and the abdomen to 

 the base of the third segment, reddish brown ; there are blackish streaks on the 

 mesonotum near the base of anterior wings and another small one on the disc; 

 the disc of the raetathorax and the terminal abdominal segments are black. The 

 insect presents a minutely shagreened sculpture ; the antennae are 22-jointed. pale 

 brown, the basal joints of the flagellum elongated ; the metathorax is areolated, 

 the face of the truncatnre more oblique than usual. The abdomen is as long as 

 the head and thorax together, its apex compressed, the ovipositor issuing from 

 beneath at the base of the compressed portion. Wings hyaline, with two trans- 

 verse dusky bands, the first about half the width of the second, enclo.sing the 

 basal nervure; the second includes the apical two-thirds of the stigma and the 

 entire radial cell, leaving the apex of the wings clear; the stigma has a yellow 

 si)ot at its base, and the radial cell has a small clear spot close to the stigma ; hind 

 wings hyaline. 



^a6.— Washington, D. C. 



Described from one specimen lMl)ele(l 2919, and the following ac- 

 count of the species is recorded in Department note book by Mr. 

 Pei'gande : 



" Oct. 21st, 1882 ; noticed, to-day in company with Mr. Schwarz, 

 a species of Hemiteles in the act of ovipositing the cocoon of a 

 species of PerUltus, perhaps Perilitiis conmiunis Cress., and the same 

 evening again in the same act. Pinned and marked it No. 2919; 

 the cocoon is placed in a tube to breed. 



"It takes several minutes before the fly succeeds in forcing its 

 ovipositor througli the tough case and before it reaches its victim ; 

 it moves the ovipositor slowly up and down, moving, during this 

 time, the abdomen from side to side, whilst the antennae are in con- 

 stant vibration." 



HEMITKI.es Grav. 



IIeinitcle»« laticiiictus sp. n. 



'J,. — Length 3.5 mm. Hlack ; the abdomen, except the gastroccpli, the third 

 segment entirely, and the apical edges of the following segments which are ri'd, 

 is also black. The head is polished, the face covered with pale pubescence ; an- 

 tennae brown, the two basal joints yellow. Thorax finely shagreened ; meta- 

 thorax longer than high, rounded off behind, the iransverse ridges distinct, but 

 the areas of the ujjper surface wanting. Legs reddish yellow. Abdomen witli 

 the first, second and third segments aciculated. tJie following segments smooth. 

 Wings hyaline, the stigma and veins brown. 



Hub. — New Haven, Conn. 



Described from one specimen labeKnl "parasite on LcKcaida uiil- 

 punctata, June, 1880." 



IIoiiiilolOM ciir.rpl.yoliisr sj). n. 



9. — Li'ngth 1..") nun.; ovip. O.S mm. Robust, the head and lliorax l)lack, sub- 

 opaque, shagreened. Legs reddish yellow; collar and mesopleura red. Abdomen 



