248 ENTOMOLOGICAL NEWS. [ June, *14 
notopleural spots, black or brown. Pleura black below with upper mar- 
gin and longitudinal stripe over mesopleura cinereous. Scutellum black 
with basal angles cinereous. Halteres white with apex of knob infus- 
cate. Abdominal spots arranged in four longitudinal series, two on 
dorsum and one on each ventral lobe of dorsal plate; sometimes apical 
margins of these segments narrowly cinereous, or the spots may be ab- 
sent on most segments. Apices of femora, bases and apices of tibiae, 
and tarsi except apices, yellow. 
Front convex, twice as broad as long. Face depressed above, as 
broad as length of third antennal joint, below strongly, obliquely pro- 
jecting, with about 5 hair-like side bristles; facial prominence bare, 
shining, in profile with straight margin. Cheeks hardly more than half 
as wide as third antennal joint. Antennae with joint 3 subconical, 
straight on upper margin; arista with 8-9 hairs which are nearly as 
long as width of third. 
Mesonotal setulae indiscernible except in post intra-alar series; no 
prescutellars, otherwise chaetotaxy normal. Abdominal marginal bris- 
tles proportionately long and suberect. Venation as in Figure 2. 
Length 1.5 mm. . 
Holotype—¢, Alajuela, Costa Rica. Collected September 
15, 1909, by sweeping at 3100 feet altitude by P. P. Calvert. 
In collection at Philadelphia Academy of Natural Sciences. 
No. 6064. 
Paratypes—1 ¢@, Juan Vifias, Costa Rica, April, 1910, (P. 
P. Calvert); 1 ¢ 1 2, Asuncion, Villa Morra, Paraguay 
( Vezenyi). 
Evidently belonging to the picta group which has long hairs 
on the arista and only two dorso-central bristles. It is my 
pleasure to name this pretty species in honor of my friend, 
Dr. Philip P. Calvert, who by careful collecting in Costa Rica 
has brought to light many new and interesting species of this 
family. 
Lytogaster pallipes n. sp. 
Shining black, sparingly brown pruinose; antennae except above, 
palpi, and legs except femora sometimes infuscate medianly, yellow; 
halteres whitish; face and cheeks sparingly cinereous, narrow orbits 
densely silvery; wings hyaline, yellowish, immaculate, with yellow 
veins. 
Smooth, except abdomen sometimes faintly sculptured especially 
basally. Front 1.5 times as broad as long; orbitals small. Face half 
the width of vertex, twice as long as broad, with weak median tuberos- 
ity; upper orbits parallel; bristles minute. Cheeks as wide as third an- 
tennal joint; latter large, as broad as long; arista short-haired above. 
