19 
TIPHIA AFFINIS, Sp. n. 
Male—Very similar to similis, differing only in having the disc of 
mesopleura usually with a few scattered small punctures interspersed 
between the large ones, the face with a very distinct central ridge, the 
clypeus broader, lower portion of sides of metathorax shagreened, second 
dorsal abdominal segment precipitous anteriorly so that there is a very 
pronounced incision between the first two segments. 
Female.—Differs from the male in having the antennae ferruginous 
apically, and the under side of antennal flagellum of same color. 
Face narrowly doubly punctate above antennae, remainder of sur- 
face with sparse large punctures: clypeus doubly punctate basally, im- 
punctate on a broad apical margin, centrally narrowly emarginate ; man- 
dibles simple, broad, grooves ceasing some distance before apex; cheeks, 
posteriorly, narrowly doubly punctate above. Mesopleura glossy, doubly 
punctate posteriorly ; enclosure parallel-sided, well defined, central ridge 
distinct; posterior face of metathorax doubly punctate laterally. Basal 
abdominal segment with very small sparse punctures, preapical depression 
consisting of a single transverse series of deep contiguous punctures; 
anterior margin of second segment not so noticeably declivitous as in 
male, but more so than in females of other species; remaining segments 
sparsely covered with small punctures, which are closer near anterior and 
posterior margins; pygidium with the apical half glossy and impunctate. 
Stigma small, truncate, outer transverse cubital oblique. Basal joint with 
groove on posterior surface weak-—in the form of two small subcon- 
tiguous pits. 
Length: male, 6-7 mm.; female, 7 mm. 
Type locality, Galena, Ill., July 8, 1917 (Hart and Malloch). Para- 
types: Falls Church, Va., July 1-4 (N. Banks); Dubois, Ill., Aug. 10, 
1917 (J. R. Malloch). 
TIPHIA ATERRIMA, Sp. nl. 
Female—Glossy black; flagellum below, and mandibles except 
apices ferruginous; front side of fore tibiae and the tarsi brownish. 
Head rounded above; the front slightly buccate above antennae and 
not steeply declivitous above, sparsely punctate above, punctures below 
not contiguous; clypeus with a broad impunctate margin, apex slightly, 
narrowly emarginate; mandibles simple, long; space between oral open- 
ing and back of head broad. Metathorax twice as long as scutellum, 
shagreened and sparsely punctate on dorsum; enclosure 3 times as long 
as broad, parallel-sided or slightly narrowed centrally; lower portion of 
sides of metathorax distinctly shagreened, posterior face doubly punctate. 
Anterior declivitous portion of dorsal abdominal segment doubly punc- 
tate on entire surface, the small punctures very minute; post-marginal 
depression broad, with 2-3 series of large punctures except in center; 
punctures on remaining segments as in punctata, the post-marginal 
incised line distinct except sometimes on median portion of second seg- 
