PARASITIC lIYMKNorTKUA. 203 



hyaline, the stigma and veins pale; the third discoidal cell is not quite twice as 

 long as the second ; the metathorax as well as the sculpture of the first and second 

 ahdojiiinal segments is as in previous species. 



Hah. — Mountain View, Cal. 



Described from one % specimen received from Mr. Ehrhorn. 



IIYPOI.KPTIJS Forstcr. 

 Ilypoleptuiii ooliimbiaiiuw sp. n. 



^ .— Length 2 mm. Black: palpi, legs, first and second abdominal segments 

 at base and the venter pale yellowish ; antennse 18-jointed, nearly as long as the 

 body, hrown : the first joint of the flagellum is a little shorter than the second; 

 metanotum exareolated without carinas. Wiugs hyaline, ciliate, the stigma and 

 veins brownish yellow, the areolet wanting. Abdomen, except the first segment, 

 which is aciculated, smooth and polished. 



Hah. — District of Columbia. 



I¥EIIRATKI,11S Ratzeburg. 

 ]Weiirat<>Iiis aniericaiiiiM sp. n. 



9. — Length 2..") 15 mm. Polished black; legs and venter brow'nish yellow, a 

 blotch above on hind coxte. hind femora and tips of their tibise more or less dusky ; 

 anteniue 21-jointed, the terminal joints quadrate, the basal joints of tiagellum 

 elongate; metathonux exareolated, alutaceous, with traces of the lateral carina; 

 posteriorly, the apical tnmsverse carina alone distinct. Wiugs hyaline, the stigma 

 and veins light Ijrown. Abdomen with the first segment and the second at base 

 shagreened, or finely granulated, the sutures 1, 2 and 3 being pale. 



Hah. — Fredericktown, Md. 



Neuraloliix ulniicola sp. n. 



9- — Length 2.5-3 mm. Polished black; face, anterior orbits, lower ])art of 

 cheeks, dypeus, mandibles, pronotum, except a dusky streak al)ove. mesopleura, 

 legs and sometimes a spot at anterior lateral angles of mesonotum reddish yellow, 

 the face and scape benejith more decidedly yellow; the palpi, tegulse and venter 

 white. Wings hyaline, the stigma and veins brown, the areolet wanting, the 

 third discoidal cell fully twice as long as the second ; metanotum exareolated, but 

 with traces of the lateral longitudinal carina' posteriorly ; antennse 23-jointed, 

 dusky or brownish, except at basal ojie-third. which is yellowish. Abdomen 

 compres.sed from the middle of third segment, perfectly smooth and shining, 

 except segments one and two, which are shagreened. 



Hah. — Columbus, Ohio. 



Described from one 9 receive<l from Prof. F. ^f. Webster, and 

 bred by him from a leaf-miner on elm, probabl}' Lithocolletui alnwlht, 

 Chambers. 



iV<'iiratelu!>i liriodeiidri sp. n. 



9- — Length 2.1 mm. Polished black; face brownish, tegulse and palpi white; 

 antennfe toward base and legs, yellow; the antennse are 22-j()inted ; metathorax 

 smooth, polished, exareolated. Witigs hyaline, the stigma and veins i)ale brown. 

 Abdomen with a yellow blotch at ba.se of third segment, the first segment and 

 basal two-thirds of second aciculated. 



TRAN.S. AM. KNT. SOC. XXIII. JUNE. 1896. 



