THe CRANE-FLIES oF NEw YorkK—Parrt I 903 
specialized forms the number of free segments beyond the fusion segment 
is reduced to four or five, making a total of eleven or twelve segments. 
The following key separates the local species of Chionea: | 
1. Color of the body grayish. [Can. Ent., vol. 49, p. 205-206. 1917.] 
C. noveboracensis Alex. 
Colorotphebodys reddish. yellow or yellow. <3). .5- 52500552 as ys ns secs eee ae eens. 2 
2. Form long and slender, length of male less than 4 mm., diameter across thorax about 
0.6 mm.; legs all very long and slender, not incrassated. [Can. Ent., vol. 49, p. 206. 
LICL | eI SP ret a es eh le ey ae ee ae C. gracilis Alex. 
Form stouter, length of male over 4 mm., diameter across thorax over 1 mm.; male with 
Am ecaAstbhesposternormlezsinerassabed wins an slse eh aiy ce toeel ca leieeernl) coe: ae 3 
3. Antennae with 12 segments, there being 9 flagellar segments beyond the Ist, or fusion, 
segment; all the femora incrassated; size larger, length of male about 5.5 mm., diameter 
across thorax 1.5mm. [Can. Ent., vol. 49, p. 204-205. 1917.]...... C. primitiva Alex. 
Antennae with 7 segments, there being 4 flagellar segments beyond the Ist, or fusion, 
segment; only the hind femora incrassated; size smaller, length of male about 5 mm., 
diameter across thorax 1 mm. [Ins. Injur. to Veget., 3d ed., p. 601, fig. 260. 1841.] 
C. valga Harr. 
(C. scita Walk. and C. aspera Walk. are probably synonymous with C. valga.) 
Genus Cladura Osten Sacken 
1859 Cladura O.S. Proc. Acad. Nat. Sci. Phila., p. 229. 
There are but two described species of Cladura, both occurring within 
the limits considered in this paper. Cladura fuscula Loew (of Europe) 
is Adelphomyia serilis (Hal.); C. flavescens Brun. (of India) is doubtfully 
a member of this genus. It should be noted here that the antennae of 
Cladura have the basal segments of the flagellum united into a fusion-seg- 
ment so that the antenna seems to have less than sixteen segments. The 
immature stages are quite unknown but are presumably spent in the soil. 
The two species of Cladura are separated by the following key: 
Large species, wing of female over 7 mm.; reddish yellow, the thoracic pleura spotted 
with brown; wings yellowish, the cross-veins and deflections of veins clouded with brown; 
Sc long, ending opposite the base of R2, Sc. being about opposite the fork of R2+3; r at 
or beyond one-third the length of R2; petiole of cell Mi short, not much longer than m. 
[C. flavoferruginea O. S., Proc. Acad. Nat. Sci. Phila., pl. 4, fig. 34,1859. C. indivisa 
O.S., Proce. Acad. Nat. Sci. Phila., p. 291, 1861.] (Plate XX XVII, 102.) 
C. flavoferruginea O. S. 
Smaller species, wing of female under 6 mm.; pale yellow, no spots on the thoracic pleura; 
wings hyaline without dark markings on the cross-veins and deflections of veins; Sc short, 
ending about opposite midlength of R2+s, Sc: being nearly opposite the fork of the sector; 
r at about one-fourth the length of R2; petiole of cell Mi long, about twice the length of m. 
[Proc. Acad. Nat. Sci. Phila., p. 589-590, pl. 27,. fig. 27. 1914.] (Plate XX XVII, 103.) 
C. delicatula Alex. 
These species are characteristic late summer and autumnal crane-flies, 
very common in some localities thruout September and October. They 
