1944] Studies on Syr p hid Flies 33 
posterior margin. The anterior corners of the segment are dark 
brown and connected with the brown lateral margins. Fifth seg- 
ment marked in an exactly similar way, the lateral triangles more 
slender but reaching almost to the base of the segment and not 
connected with the somewhat more slender median stripe which 
latter is concave on each lateral surface; the anterio-lateral cor- 
ners of brown are absent; sixth segment with three median vittae 
of brown. Pile of abdomen wholly flat-appressed and black. 
Fourth segment about twice as wide as long, the third segment 
barely longer, the fifth barely shorter, the third barely shorter 
than the second. Legs: anterior and middle pair wholly pale 
yellow, pale pilose, the middle femora with a posterior row of 
long dark hair. Posterior femora light brown, apex yellow with 
a wide, dark brown, subapical annulus; almost the whole of its 
pile is black. Hind tibiae except for the very narrow base wholly 
dark brown, blackish pilose. Hind tarsi wholly yellow. Wings: 
very darkly tinged with brown, rather deep, and elongate oval; 
the alulae is small, the subapical cross vein rather sigmoid. 
Holotype : No. 23802, one female. Canal Zone, Barro Colorado, 
July 24, 1924, N. Banks collector. 
Salpingogaster panamana n. sp. 
Related to cothurnatus Bigot; it differs in the red and yellow 
pleurae and yellowish brown tarsi. 
Male. Length 12.5 mm.; wing 9 mm. Head: vertical triangle 
shining blackish, the front narrowly yellow upon the sides, 
broadly brownish-black in the middle, not especially protuberant. 
Face pale yellow and shining with short, pale yellow shining hair, 
rather sparse. There is no black or dark facial stripe. Antennae 
light brown throughout, without any suggestion of yellow or 
orange. Occiput black, sparsely pale pilose. Thorax: broadly 
dark brown over the mesonotum which is somewhat greasy and 
in consequence the arrangement of the pollen or possible vittae 
is obscured. Nevertheless the thorax appears to have been 
broadly greyish pubescence throughout the middle; it was prob- 
ably vittate. The humeri, a stripe along the sides as far as the 
suture only, the post calli and the whole of the scutellum except 
for a brown transverse band, pale yellow. Pleurae reddish brown 
with a broad stripe on the posterior half of the mesopleurae and 
propleurae, anterior portion of the pteropleurae and the greater 
part of the sternopleurae pale yellow. There is a second small 
