246 NEW YORK STATE MUSEUM 
a Sc longer, considerably surpassing the base of Is; cross 
Vein s/s PRESEM Ea weeks ace ee ae ee Empeda 
hh R2 longer than the fused portion of Res 
1 Rs greatly shortened and angulate at its first fork, forming 
a V-shaped support for the front end of the™ 
(ofa 6 Mee MEA SP ee ROBE RR et What ml rn ck a (tae Cryptolabis 
tw Rs normal . 
jy Second fork of Rs _ shifted to the posterior 
S 1G Cis. 8s ais te Rb etch es pean ee Molophilus 
jj Second fork of sector, anterior and normal in position 
k A supernumerary cross vein present in the cell R:; 2d 
Zl SBROMCA WONSMTAUAMES, 5 coccdcouococensovc‘es Helobia 
kk No supernumerary cross vein in cell Rk2; 2dA 
not Strongly bisinuate 
1 The tips of the cubital vein showing a tendency to 
turn toward the apex of the wing 
m Cross vein m present, and situate nearer to the 
wing margin than to the fork of M, inclosing 
an unusually long cell rst M, 
n Outer border of cell rst Mz sinuate..Acyphona 
mn Outer border of cell rst M2 broken by a re- 
entrant angle from which springs a spur or a 
CLOSS “VeINis iin aie tn Petar ae eee Haplobasis 
mum Either the base of Ms; or the cross vein M 
absent, leaving the cell: 7st M2 open ex- 
ternally 
n The cross vein m absent; anal veins conver- 
HSTANS WONVaIKG! (aS WDS.ccoccoccocccs Erioptera 
nn Base of M; absent, its tip transferred to 
the support of cross vein m, anal veins not 
convergent at their tips......... Mesocyphona 
ll The tips of the cubital vein in their normal posi- 
tion, turned.away from the wing apex 
° m The sides of cell rst M2 parallel: the tip of R. 
more or less decurved 
#1 he first fork of is skewed forward.......- 
Gnophomyia 
Pe INKS mrPSt soOwke JS SymMMeEwRICAll, ooo55000006 
Limnophila in part and Ulomorpha 
mm The sides of cell rst Mz more or less divergent 
to its outer end; tip of FR. straight, or slightly 
recurved 
n The deflected base of Cu: meets vein M, a con- 
siderable distance before its fork. The second 
fork of Rs skewed forward. ........ Trimicra 
nn The deflected base of Cu: meets vein M after 
or quite close to its fork; the second fork of 
IRS OMANI 5 o000000000%008 Rhypholophus 
« Also Phyllolabis Doane, which appears to be indistinguishable by its venation from 
Gonomyia; this is the only Phyllolabis known to me, j uy | 
