THe Crane-Fures oF New York — Parr I 891 
2. A supernumerary cross-vein in cell {st A, connecting the two anal veins. 
Discobola O. 8S. (p. oe 
INotsupermumenranyacross-veim my cell) 1sttAms ees .c ccs eens de cute ce tne seedless a. 
3. Often with a supernumerary cross-vein in cell Sc; antennae of the male bi-, uni-, or 
Hilo-eaoMaAiesl. da ke ad os ASHE eee ee ee eS ee Rhipidia Meig. (p. 892) 
No supernumerary cross-vein in cell Sc (excepting a weak one in Dicranomyia simulans); 
angennacroimuhemmalemot pectinated: ... .secse dos fe ee sce aed twee oe. 4 
4, Sc usually short, ending opposite the origin of Rs; claws usually with but a single tooth on 
the lower side; ventral pleural appendage of the male hypopygium a fleshy lobe. 
Dicranomyia Steph. (p. 893) 
Se always elongate, ending far beyond the origin of Rs; r often considerably removed 
from the tip of Ri; claws usually with two or three teeth on the lower side; ventral 
pleural appendage of the male hypopygium horny............ Limnobia Meig. (p. 895) 
Genus Geranomyia Haliday 
1833 Geranomyia Hal. Ent. Mag., vol. 1, p. 154. 
1835 Limnobiorhynchus Westw. Ann. Soc. Ent. France, vol. 4, p. 683. 
1838 Aporosa Macq. Dipt. Exot., vol. 1, p. 62. 
1865 Plettusa Phil. Verh. Zool.-Bot. Ges. Wien, p. 597. 
The genus Geranomyia includes about seventy described forms, the 
species being most numerous in the Neotropical and Oriental regions. 
The species are readily distinguished from all other crane-flies by the 
curious elongate rostrum (fig. 124, a, page 846). The four species occurring 
within the limits considered in this paper are common and widely dis- 
tributed; further notes on their distribution have been given by the writer 
in an earlier paper on the genus (Alexander, 1916:486-496). Nothing is 
known concerning their immature stages, this being one of the most 
conspicuous gaps in the whole family. It is probable that G. rostrata, 
at least, is partly aquatic, living in moist earth or possibly in wet moss. 
The following key divides the local species of the genus: 
1. Wings heavily spotted with dark brown i wes of the tibiae black. [Limnobia rostrata Say. 
Journ. Acad. Nat. Sci. Phil., vol. 3,p. 22. 1823.) (Plate XXXI, 10.)..G. rostrata (Say) 
Wings unmarked or with only pale ae Seams aon cGhe cond apps eee ee 
2. Sc short, ending opposite or just beyond the origin of Rs; cross-veins and deflections 4 
veins faintly seamed with darker. [Proc. Acad. Nat. Sci. Phil., p. 207. 1859.] 
zl ae PNONONGI MOSS) Sort en voninhias Geko tina cic innn ocak sroierernec gm cle Nee G. diversa O.S. 
Sc long, ending at about midlength of the sector; wings unmarked except for the stigmal 
SO... coco oped ome pObiCE DOOM OB OOM OR US oD Come cuore Oem o aU SC CbeD aaa be 3 
3. Body coloration yellow; wings with the stigma pale; legs dull yellow, the femora not . 
darkened at their tips. [Journ. N. Y. Ent. Soc., vol. 8, p. 186, pl. 7, fig. 18. 1900. 
CGPiaii® SOKO, DAY) ren Nala orks 6 Hin oie Oe ae ee See G. distincta Doane 
Body coloration yellowish brown, darkest on the scutal lobes and the postnotum; wings 
with the stigma oval, dark brown, well-defined; legs brownish yellow, the femora brown 
at the tips. [Limnobiorhynchus canadensis Westw. Ann. Soc. Ent. France, vol. 4, 
PaGetemisoo (plate XOOXT, 1c ise ceo. ee eee ee se. G. canadensis (Westw.) 
