- 00 TREUBIA VOL. II, 1. 
Male. Length 3.5 mm. Antennae !/, longer than the body, thickly haired, yellowish 
transparent, 14 segments, the 5th with stems 3 and 3!/, times their diameter respectively. 
The basal enlargement pyriform, the distal enlargement with a length about !/, greater 
than its diameter, each with a whorl of long, stout setae and presumably with a 
moderately long circumfilum, the 10th and following segments having the basal portion 
of the stem with a length about 2!/, times its diameter, the distal enlargement 
cyclindrical, somewhat produced and with a length over twice its diameter and the 
distal portion of the stem with a length 4 times its diameter, terminal segment somewhat 
produced, irregular, the basal portion of the stem being represented by a narrow 
constriction; the distal enlargement sowewhat produced, and apically bearing a long, 
stout, tapering setose process. Palpi, first segment moderately long, irregular, the 
second with a length about 3 times its diameter, the third !/, longer, more slender 
and the fourth a little shorter and more dilated than the third. Mouth parts produced 
as narrow, piercing organs with a length about !/, the vertical diameter of the head; 
body yellowish, wings hyaline, very narrow, with a length about 3 times the width, 
the third vein uniting with the margin well beyond the apex, halteres and legs yellowish 
transparent, claws moderately long, stout, curved at nearly right angles, simple, the 
pulvilli a little shorter than the claws, Genitalia; basal clasp segment moderately long, 
slender, with an irregular lobe basally, terminal clasp segment as long as the basal 
clasp segment and rather stout, dorsal plate broad, triangularly emarginate, the lobes 
obliquely truncate; ventral plate long, broad, broadly and roundly emarginate. 
Female. Length 3 mm. Antennae a little longer than the body, sparsely haired, 
pale yellowish, 14 segments, the 5th with a stem about as long as the sub-cyclindrical 
basal. enlargement, which latter has a length about 4 times its diameter and a distinct 
constriction near the basal third; basal enlargement of the terminal segment with a 
length about 2!/, times its diameter and apically with a moderately stout, tapering 
process. Mesonotum brownish yellow. Scutellum, postscutellum and abdomen yellowish, 
legs yellowish transparent, ovipositor short, the terminal lobes narrowly oval and 
sparsely setose, other characters nearly as in the male. 
Type Cecid. A. 3153 N. Y. State Museum. 
Orseoliella orientalis n. sp. 
The specimens were received from W. DOCTERS V. LEEUWEN under 
date of July 15th, 1920, labelled 20, Oplismenus compositus P. B., Bui- 
tenzorg VI, 1920, Alt. 250 m. New gall D.v.L. !) This species is very 
distinct from ©, javanica KIEFF. and probably so from O. graminis FELT since 
it presents well marked colorational and certain structural differences in 
the female. A series of both sexes would be necessary in order to establish 
this definitely. 
Male. Length 3 mm. Antennae a little longer than the body, thickly haired, light 
brown, 14 segments, the 5th with stems 1!/, and 3!/, times their diameters respectively. 
Basal enlargement pyriform, the distal enlargment sub-cyclindrical, with a length over twice 
the diameter and slightly constricted near the basal third. Palpi, first segment short, 
subquadrate, second broadly oval, the third !/, longer, more slender, the fourth a little 
longer and more slender than the third. Mesonotum reddish brown. Scutellum and 
postscutellum yellowish, abdomen yellowish brown, halteres pale yellowish, coxae and 
1) A leaf-sheath gall as may be found on different grasses. D. v. L. 
