44 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 92 
margin with about 9 or 10 unusually short, blunt, subequal teeth and 
with a slight tubercle on inner ventral margin. Abdomen pointed- 
ovate, about as long as head and thorax; first tergite perfectly smooth 
and bare except for a few hairs on dorsolateral margins, posterior 
margin straight; second tergite hairy and weakly shagreened dorso- 
laterally, polished and bare on middle of dorsum and on ventral half 
of lateral aspect, its posterior margin not straight but broadly arcu- 
ately emarginate medially; sides of third, fourth, and fifth tergites 
entirely sculptured and hairy, their dorsums more weakly sculptured 
and each with one more or less complete transverse row of hairs; 
posterior margin of third tergite very slightly, arcuately emarginate 
medially, that of fourth and fifth not emarginate; sixth tergite com- 
pletely hairy and finely shagreened and with numerous shallow, in- 
distinct punctures or pits; seventh tergite about as long as sixth, 
finely shagreened and hairy ; ovipositor sheath barely extending beyond 
apex of seventh tergite. 
General color black; scape reddish testaceous beneath, black or 
blackish above; pedicel and flagellum black; tegulae yellow; wings 
hyaline, venation dark brown; anterior and middle coxae black, pos- 
terior pair black outwardly but usually testaceous on inner side; 
femora varying from brownish testaceous to mostly black, with a pale- 
yellow spot at apex of each; tibiae likewise varying from brownish 
testaceous to black, the anterior and middle pairs yellowish at bases 
and apices and the posterior pair with a yellow spot on posterior face 
of each some distance behind the base and another at extreme apex; 
tarsi testaceous; abdominal sternites more or less testaceous. 
Male—Length 3.3 mm. Agreeing with the description of female 
except that the raised area on scutellum is less conspicuous, being 
smaller and not polished but very finely sculptured, the abdomen is 
about as long as thorax, the second tergite is not distinctly arcuately 
emarginate, the hind coxae are entirely black, and the sternites are 
black. The antennal flagella are missing from the only male specimen 
available; the scape is like that of the female. 
Type locality—Tamazunchale, San Luis Potosi, Mexico. 
Type.—U.S.N.M. No. 55149. 
Remarks—Described from six females and one male received from 
Phi] Rau under his note Nos. 1431 and 1436 and said to have been 
reared from nests of Polistes instabilis Saussure collected in the type 
locality, the parasites having emerged at Kirkwood, Mo., May 7 
to 14, 1939. 
BRACHYMERIA DISCRETOIDEA, new species 
This is very similar to d7sereta but, so far as may be judged by the 
material at hand, seems to be sufficiently distinct to justify description 
as a different species. 
