216 NEW YORK STATE MUSEUM 
with yellowish Sciara larvae. The larva of this midge was not seen. 
This species is closely allied to L. americana from which it is 
most easily separated by the relatively longer twelfth and thirteenth 
antennal segments, these latter having a length two and one-half 
times the diameter, the distal being knobbed. See the above citation 
for a description of the male. 
Leptosyna americana n. sp. 
The specimen referred to this genus was captured in a trap lan- 
tern at Nassau, N. Y., May 27, 1908. 
Male. Length .75 mm. Antennae extending to the second ab- 
dominal segment, sparsely haired, fuscous yellowish; 13 segments, 
the first somewhat produced, obconic, the second short, subglobose, 
the third and fourth distinct, the fifth with a stem as long as 
the subcylindric basal enlargement, which latter has a length one- 
half greater than its diameter and is adorned subapically with a thick 
whorl of long, stout setae, the twelfth and thirteenth segments are 
rather closely fused, the latter truncate apically. Palpi apparently 
uniarticulate. Mesonotum dark reddish brown. Scutellum, post- 
scutellum and abdomen fuscous yellowish or yellowish orange. 
Wings hyaline, subcosta uniting with costa at the basal third, the 
third vein at the apex and the simple fifth at the distal third. 
Halteres yellowish transparent. Legs light fuscous yellowish; 
tarsi slightly darker, presumably five-segmented. Genitalia; basal 
clasp segment stout, truncate; terminal clasp segment stout, strongly 
curved, apically with a heavy, recurved, process; dorsal plate long, 
broad, deeply and triangularly emarginate, the lobes roundly trun- 
_ cate; ventral plate long, nearly divided, the lobes long, slender, 
tapering, narrowly rounded. (Plate 13, figure 5.) Type Cecid. 
1341. 
Frirenia Kieff. 
1894 Kieffer, J. J. Wien. Ent. Zeit., 13:204, 206-9 
1904 Meunier, F. Soc. Sci. Brux. Ann., 28:9 
rome helt, EB. Pa Ne wont. Soc: Jour, 10:37 
IgII —————— N. Y. State Mus. Bul. 147, p. 85 
Members of this genus may be recognized by the 3 simple long 
veins, the third disappearing before the tip of the wing, the mem- 
brane sparsely clothed with fine hairs, and the 5 tarsal segments, 
the first being shorter than the second, in connection with the biartic- 
ulate palpi. Antennal segments 13, subcylindric and with short 
stems in both sexes. Male genitalia; basal clasp segment stout, 
subtriangular; terminal clasp segment rather long, stout, with a 
distinct, chitinous process at the internal distal angle; dorsal plate 
short, broad, deeply and roundly emarginate, the lobes roundly tri- 
angular; ventral plate rather long, broad, truncate apically ; oviposi- 
tor short, the lobes consisting of three subequal segments. Type 
F. tenella Kieff. No American species are known. 
