896 The American Naturalist. [October, 
from the ground and locust eggs are possibly its food. The discovery 
of a new species is therefore of interest. 
The antennz are fourteen-jointed in both sexes, those of the male 
longer. The mandibles, armed with a tooth near the apex within, and 
the labial palpi show no sexual difference. The maxillary palpi, long 
in the female, are not visible in the male. The middle and the hind 
tibiæ are two-spurred in both sexes; the hind tibiz greatly swollen in 
the female, are no more swollen than the femora in the male. The 
first joint of the hind tarsi in both sexes is as short as the last joint. 
The abdomen of the female is elongate, cylindric, six-jointed, with a 
seventh dorsal joint connate with the sixth; sting minute; the abdo- 
men of the male is cup-shaped, likewise six-jointed ; claspers directed 
forwards beneath. In the male abdomen the first segment is three times 
as long as all the rest combined, gradually enlarged towards the ex- 
tremity; the third and fourth segments are longer above than beneath ; 
the fifth and sixth segments are vertical, invisible from above. 
PELECINUS BRUNNEIPES, n. Sp. 
Female.—Size of dichrous. Dise of propodeum behind puncto- 
retieulate. An oblong brown cloud in the first submarginal cell 
behind the stigmal cloud. Legs piceous-brown ; middle and fore.tibise 
and tarsi clay-yellow. "Tenth and apical half of ninth joints of atenne 
whitish. The whole insect otherwise shiny black.—One specimen col- 
lected at Marysville by Prof. E. M. Aaron. 
In P. polycerator, which is of larger size, the disc of propodeum behind 
is transversely arcuately rugose, the depressions punctate; there is no 
separate cloud in the wing; and the legs, except tarsi, are entirely 
black. 
PELECINUs DICHROUS Klug. 
Specimens of this South American species, kindly sent me by Prof. 
Carl Berg, of Buenos Ayres, show the dise of the propodeum behind 
transversely rugose in the female and longitudinally rugose in the 
male. The female has the ocellar tubercle, the clypeus, a spot above 
clypeus, a spot at base of mandibles, the thorax (especially above) red; 
the legs more or less brownish; the tenth joint and apex of ninth joint 
and base of eleventh joint of &nténüs orange. 'The male has none of 
the red shown in the female and the atenn:e are entirely black. 
Wm. Hampton PATTON. 
Flight of Locusts.—Mr. C. B. Mitford pra. an interesting ac- 
count’ of what was, he says, a m any he has ever 
