292 
[November 
postscutellum aud an obsolete spot on tbe pleura immediately behind 
the fore-feet, yellow ; tegulm honey-yellow. Wings subliyaline, apical 
margins faintly clouded with fuscous; nervures piceous. Legs : coxae 
black, the posterior pair with a yellow spot at their base; trochanters 
and femora ferruginous, varied with blackish in front, almost entirely 
blackish behind; tibiae yellow varied with fuscous and ferruginous, 
the posterior tibiae having a patch of blackish on the middle of the 
outer surface but not reaching the upper margin which is entirely yel¬ 
low ; tarsi yellowish-ferruginous. Abdomen finely punctured, shining, 
black; first segment above black, sometimes with an obsolete ferrugi¬ 
nous stain on its disk; on each side of the second segment a large cu¬ 
neiform macula pointed within and sometimes almost contiguous on 
the disk; on each side of the third segment a transverse yellow line; 
the fourth and fifth segments each with a yellow fascia, indented on 
each side anteriorly, the fascia on the fourth segment very slightly in¬ 
dented on the disk both anteriorly and posteriorly, and that on the fifth 
segment rather deeply and obtusely indented on the disk posteriorly; 
beneath blackish-piceous, with obsolete ferruginous stains, the fourth 
segment has a yellowish fascia the anterior margin of which is scooped 
out on each side, sometimes there is an obsolete similar fascia on the 
third segment. Length 3—3 | lines. 
Male. Like the female, except that the clypeus is sometimes almost 
entirely yellow, the yellow orbits of the eyes behind, the yellow spot on 
the pleura and the yellow line on the post-scutellum are sometimes 
obliterated; the sixth segment of the abdomen above has a yellow fas¬ 
cia, and the anus is somewhat rounded at tip. Length 3^-—4 lines. 
Hah. Pennsylvania. Four 9 and two % specimens. Coll. Ent. 
Soc. Philad. 
The yellow markings on the ventral segments of the female are some¬ 
times obsolete. 
This species resembles N. electa n. sp., very much in color and mark¬ 
ings, but it is much smaller; the first abdominal segment has no yellow 
spots or lines, and the yellow line on each side of the 3d segment is 
not indented either anteriorly or posteriorly. 
TO. N. vicina n. sp. 
Female. Head black, densely punctured; orbits of the eyes behind, 
obsoletely in front, dark ferruginous ; mouth piceous. Antennae black, 
