NORTH AMERICAN HYMENOPTERA. 201 



legs are pale, almost white, with antennae, excepting scape, black. The wings are 

 hyaline, and the marginal vein very long, occupying two-thirds the length of 

 the wing, the stignial vein a mere dot. The scutcllum has but one groove down 

 its centre. 



Described from three specinien.s reared from a Tineid larva living 

 in the wooly galls of Andrieus fiocci Walsh. These two species are 

 the only ones known in this country. 



E]^TEDOIV Dalmau. 



72. Entedon diastata' Howard. 



Several specimens of this species were reared from a dipterous leaf- 

 mining fly Diastata sp. mining in corn leaves ; last summer. 



73. Entedon Horillus Walker. 



Several specimens of an Entedon agreeing almost exactly with Mr. 

 Walker's description of this species in Ann. Mag. Nat. Hist. vol. xx, 

 p. 23, were reared by me last summer from the pupa of Desmia 

 macidalis Westw. 



74. Entedon apliidipliagns n. sp. — 9- Length .08 inch. Head, thorax, 

 scutellum, metathorax and metapleurre, cupreous, rest of the body blue-black, 

 although there is a slight metallic lustre to the abdomen above, and in one speci- 

 men slightly to the legs. The tarsi are white: wings hyaline. 



Described from two specimens reared from the orange aphis 

 Siphonophora citrifolii Ashm. It seems to be very distinct from all 

 the others in our fauna and easily recognized. 



Subfamily Eulophin^. 



SYMPIESIS Forster. 



75. Syinpiesis flavipes Ashm. 



Three additional specimens of this species were reared last summer 

 from a rose gall. The type was taken at large. 



Subfamily TEXRASTiCHiNii^:. 



EUDERUS Haliday. 



76. Euderus elongalu!^ n. sp. — 9. Length .05) inch. Slender, elongate, 

 blue-black, with dull metallic green, scaly thorax and scutellum. Tlie vertex of 

 head is transversely acute and the front deeply grooved for the reception of the 

 antennae. The antenna" (8-joiuted?) dark brown, scape pale. The parapsides 

 very distinct ; tips of tibia> and tarsi white, excepting the last apical tarsal Joints, 

 which are brown. The abdomen is sessile, elongate-ovate and blue-black. 

 Wings hyaline; veins yellowish. 



Described from one specimen. 



TRANS. AMER. ENT. SOC. XIV. (26) NOVEMBER, 1887. 



