no. 1812. NEW ICHNEUMON FLIES— VIERECK. 191 



locular line, lateral ocellar line a little longer than the greatest diameter 

 of the lateral ocellus, postocellar line nearly one and one-half times 

 as long as the lateral ocellar line; costulae developed, extending to 

 the lateral longitudinal carina?, which latter are not well defined, 

 basal area and areola nearly as in Limnerium oxylus Cresson except 

 that the third abscissa of the median longitudinal carina is nearly 

 parallel to its fellow of the opposite side, apical transverse carina 

 poorly developed, more or less wanting, second abscissa of radius 

 straight as compared with the first and a little more than one and 

 one half times as long as the same, stigma nearly three times as long 

 as wide or high, areolet mesochorine in shape, petiolate, nervellus 

 angulate below the middle, the portion below the angulation post- 

 f ureal, hind claws apparently simple; tegulae, base of wings, anterior, 

 middle and distal posterior trochanters yellow, anterior and middle 

 coxae more or less brownish, hind coxa? black, proximal posterior 

 trochanters mostly blackish, fore and mid-femora translucent brown- 

 ish, hind femora castaneous, fore and mid-tibiae translucent brownish 

 with yellowish above except apically, hind tibiae variegated with a 

 yellowish band at base followed by a fuscous band then a yellow band, 

 and finally with the apical third infuscated, tarsi more or less brown- 

 ish; abdomen with a more or less developed apical brownish band to 

 the dorsal segments and with the greater part of the sides of the com- 

 pressed segments brownish, plica yellow infuscated. 



Male. — Similar to the female. The type lacks entirely the apical 

 transverse carine. 



Type.— Cat. No. 13483, U.S.N.M. 



Type-locality. — Mount Washington, Ohio. 



The types were received from the U. S. Department of Agriculture, 

 Bureau of Entomology, with the following legends: "Bred from 

 Prodenia ornithogalli, August 21, 1909." H. M. Miller, collector. 



MEGARHYSSA GREENEI, new species. 



Female. — Length, 27 mm.; sheaths of the ovipositor 35 mm. long; 

 similar to Megarhyssa lunator (Fabricius Cresson), from which it 

 may be distinguished by the maculation of the wings being confined 

 to the basal half of the marginal cell and to the apical third of the 

 discocubital cell and by the length of the sheaths of the ovipositor 

 which compared with the length, of the body are comparatively 

 shorter than in Megarhyssa lunator (Fabricius, Cresson). 



Male. — Similar in color with the female but with traces of infus- 

 cation along the basal vein; abdomen differing from that in Megar- 

 hyssa lunator (Fabricius, Cresson) in ground color, and in the third 

 to seventh tergal segments lacking a median longitudinal furrow. 



Type.— Cat. No. 13499, U.S.N.M. 



Type-locality. — Harrisburg, Pennsylvania; female June 21, male 

 August 22, 1908. Collected by A. B. Champlain. 



