June,1919 Bulletin of the Brooklyn Entomological Society 91 
Gillette and Baker is Estes Park, Colo., July 12, Gillette; Fort 
Collins Colom pine 1216." uly en, 2ereos (Drake) Barber 
McA tee); N¥Colo,, 5:o:98 (Ball));)Anrizona (U; S. Nv M.): 
A specimen from Fort Collins, Colo., July 1, 1898 (Drake), 
with whole body except eyes, terminal antennal joint and tip of 
beak stramineous, is made the type of Piesma costata variety 
defecta new variety. 
Piesma depressa, n. sp. 
Structure of antenna and thorax as indicated in key: carinz, 
except intercalary traceable, but low, front of thorax almost angu- 
larly emarginate; whole dorsal surface closely punctate, sutural 
area with a maximum of six rows of punctures. 
Ground color stramineous, but reticulation almost uniformly 
infuscate a little lighter at base of corium and on pronotal carinz ; 
apex of scutellum pale. A finely reticulated, very plainly colored 
species; eyes reddish. Maculations of under surface obscure. 
Areolar formula, see table, page 92. Length 2.25 mm. 
Described from a single female specimen, labelled Ariz., 2073 
(CR SINE MT.) 
Piesma incisa, n. sp. 
Structure of antenna and thorax as pointed out in key; front 
of thorax almost or quite angularly emarginate; dorsal surface 
less closely punctate than in P. depressa, sutural area with a 
‘maximum of four series of punctures. 
Color pale stramineous, all of basal, and apical half of terminal 
antennal joint, tips of jugeze, and sometimes other parts of head, 
and femora, infuscate; eyes reddish. A closely reticulated, very 
pale. ionus) “areolar tonmulayesee able, “page 92) Wengurld 
2.25 mm. 
Type, a macropterous female, labelled Ariz. 2073 (U.S. N.M.). 
Paratypes, brachypterous females, labelled Ariz. (Drake), and 
Dixie, Utah, September 9, 1915, E. D. Ball (Ball). 
Piesma explanata, n. sp. 
In size, color and character of pronotal carine, this species is 
much like P. cinerea Say, but is strongly distinguished from that 
