PARASITIC IIYMENOPTERA. 197 



Perilissu^i paiiiscoitles sp. n. 



9.— Length ?.') imii. Polished, inipiinctate, and of a iinifoiin pale honey- 

 yellow color, except the stemiuaticiim, the eyes and the teeth of the mandibles, 

 which are black; ocelli very large, pale, situated on a black spot; metathorax 

 smooth, cxareolated. Wings hyaline, the costal vein and stigma honey-yellow, 

 the internal veins dusky, the cubito-discoidal vein strongly curved, the areolet 

 subsessile. 



The % differs in no particular from the 9- except in having a slightly smaller 

 head, and in having the abdomen faintly dusky at apox. 



Hab.—Centviil Park, N. Y., and Canada. 

 Tril)e IT. Exenterim. 



niAKORrK Fiirster. 



Diaboriis iniiciiliv<>iitri!>» 8j>. n. 



%. — Length 7 niiii. Black; anterior orbits, extending on to the cheeks, the 

 clypeus. the mandibles, except teeth and a spot at base, the palpi, the tegulaj, a 

 line in front on superior margin of collar, the venter and triangular spots on 

 apical middle of each dorsal abdominal segment, white or yellowish white. The 

 spots on dorsal abdominal segments gradually increase in size and become bands 

 towards the apex of abdomen. Legs, except coxa?, rufous, apex of anterior and 

 middle coxa; and their trochanters more or less honey-yellow, the first joint of 

 trochanters above, however, as well as the posterior trochanters are usually black ; 

 middle and hind tai'si and tips of hind femora fuscous. Wings hyaline, the veins 

 brown ; metathorax completely areolated. Abdomen longer than the head and 

 thorax united, the, first and second segments finely rugulose. opaque. 



Hitb.—\Y\\\iG M()untain.s, N. H. (Prof. Albert Morse). 

 The species conies very close to Diaborus literaforii(s Linn., of 

 Euroi)e, and may he the American form of that si)ecies. 



EXYSTOX Schiodte. 



KxyNton abdoiiiiiialiN sp. n.? 



% .—Length 5 mm. Head, thorax, antennfe, coxa;, except tips of anterior and 

 middle pairs, and first abdominal segment black ; lower half of face, clypeus, 

 mandibles, except teeth and a small spot at base, legs and the abdomen, except as 

 hereafter mentioned, rufous or ferruginous; the palpi, tips of scutellum. tegulae, 

 base of costal veins and trochanters, whitish ; base of second abdominal segment 

 and the fourth and sixth at base slightly dusky. There is an obscure spot on hind 

 trochanters above, a dusky annulus towards base of hind femora, while tlieir 

 apices and tai"si are subfuscous. The wings are hyaline, the veins brown. 



Hab. — Beverly, Mass. 



Described from one male s[)ecimen received from Prof Albert 

 Morse, labeled June 14, 18(58. 



The species conies nearest to Exyston clavaim Cress., and mav be 

 confused in collections with that species. 



TRANS. AM. ENT. SOC. XXIII. JUNE. 1896. 



