HOUGIT: PIFUNOULID AE OF THE UNITED STATES. 
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10. Ovipositor straight. 
11. Sixth abdominal segment not furrowed. 
a. The lanceolate terminal piece of the ovipositor not 
longer than the fifth abdominal segment 
atlanticus sp. nov. 
b. The awl-shaped terminal piece of the ovipositor as long 
as the second, third, fourth, and fifth abdominal segments 
together ...... subojictcus Lw. 
These females are like the males except for the sexual differences. 
As far as I know, the females of P. fasciatus and P. nigripes are 
unknown. 
Division 2. 
Dorsum of thorax with delicate but distinct hairs . . 1 
1. Abdomen shining black or bronze with opaque black fasciae 
or spots on the cephalic borders of the segments; males . 2 
Abdomen shining black without ojiaque black fasciae but with 
gray side spots; mostly females ..... 8 
2. Fourth longitudinal vein not interrupted ... 3 
3. Dorsum of thorax pollinose on the cephalic half without any 
clearly defined boundary line between the pollinose portion 
and the shining caudal portion ..... 4 
4. Abdomen with gray side spots ..... 5 
5. Abdominal segments with moderately broad opaque black 
fasciae at their cephalic borders. 
a. Tibiae largely brownish black . . cingulatus Lw. 
b. Tibiae yellow with scarcely a suggestion of brown ; hind 
tibiae rather strongly curved . • . fuscus Lw. 
8. Dorsum of thorax more or less pollinose . . . 11 
11. Tibiae between a brown and a yellow, seeming now one, now 
the other, according to the incidence of the light. Awl-shaped 
terminal piece of ovipositor straight . nitidiventris Lw. 
P. f uscus and P. nitidiventris belong to the difficult group of 
P. ater Meig. It is not unlikely that they will prove to be the 
two sexes of one species. 
P. cingidatus Lw. In the Loew collection a single male. 
“ Grayish black. Antennae wholly black ; third joint short, rather 
obtuse. Dorsum of thorax opaque with brownish cinereous pollen ; 
pleurae sprinkled with whitish cinereous pollen. Scutellum black, 
moderately sinning. Metanotum white pollinose. First abdomi¬ 
nal segment white pollinose with a median black spot; the rest of 
