18 
transverse incised line, the punctures large, becoming sparse near apex, 
subapical depression broad and shallow, with two series of punctures 
centrally ; punctures on segments 2 to 6 large and deep, becoming pro- 
gressively larger and closer to sixth, on which they are subcontiguous ; 
seventh segment with large, deep contiguous punctures and narrow 
longitundinal impunctate line on apical half; fourth and fifth ventral seg- 
ments each with a poorly developed tubercle on each side near posterior 
lateral angle. Wing venation similar to that of inornata, the apex of 
marginal cell at upper anterior angle of submarginal, and very distinctly 
proximad of lower anterior angle; angulation of radius less than one- 
third of the distance from stigma to first transverse cubital. 
Length, 9.5 mm. 
Type locality, Colorado. One specimen labeled “Mts. of Colo., Aug.— 
Sept., Carpenter.” (Coll. N. Banks.) 
TIPHIA SIMILIS, Sp. n. 
Male.—Differs in color from occidentata in having the mandibles and 
palpi darker and the wings whitish. 
Face with less closely contiguous punctures on lower portion than 
occidentata, the preocellar impunctate space indistinct and the central 
ridge usually absent; clypeus doubly punctate, disc slightly convex, apical 
impunctate margin of moderate width, central emargination much less 
pronounced than in occidentata; mandibles simple; back of head glossy, 
the large punctures well separated, the minute punctures not very numer- 
ous. Pronotum with punctures separated and equal in size to those of 
mesopleura, the latter doubly punctate on margins and rather broadly 
so posteriorly; posterior face of metathorax with rather small close 
punctures ; lower half of sides of metathorax with longitudinal striae, but 
without the punctures present in foregoing species. Abdomen similar to 
that of occidentata, but with less conspicuous hairs, no tubercles on ven- 
tral segments, and the seventh dorsal segment with larger punctures and 
an impunctate central line; first dorsal segment much more rounded 
above, with a very deep post-marginal incised line, and the depression 
between the first and second segments very much deeper. Apex of mar- 
ginal cell in line with apex of submarginal, the lower angle of latter proxi- 
mad of median portion of posterior margin of cell; angulation of radius 
about two-fifths of the distance from stigma to transverse cubital. 
Length, 8 mm. f 
Type locality, Waukegan, Ill., August 25, 1917 (J. R. Malloch). 
A specimen in our collection differs from the type in having the 
legs paler, the wings almost milky, the stigma largely yellowish, the im- 
punctate line below anterior ocellus present, and the clypeus narrow and 
with a less distinct margin. In other respects it agrees with the type, 
and I consider it as the same species. 
Locality, Cherry Valley, Ill, Aug. 17, 1883. 
