MuIIocIl — Some Undescribed JSortJi Ainericaii Sopromi/zidm.- 
troin weeds, Xorinal, Illinois, .lane ll, 1<S84; and onii I’einale, Pond (irovc', 
Urhana, Illinois, .Inne P!, ISS!) ((’. A. llai't). 'I’ype in Illinois 8tat(^ 
Laboratory of Natural llistoi-y. Fourteen paratypes in eolle(dion of 
W. L. iNIcAtee from the following loe.aliti(is: Wasliin^don, 1). C., May, 
.June, and -Inly; Plmniners Island, Maryland, Jidy L’l, and Asheville, 
North Carolina, .Inne 2(1. 
aS'. cornpedita is represented in the same eollee.tions hy four speeimens, 
three females and oue male, from Illinois, and one specimen from (treat 
Falls, Virginia, June JO, and another fnnn Maryland, near Plummers 
Island, June (1. 
Sapromyza bispina Loew, et al. 
In the ^enus Sapromyza, as in most otlau' ^enei’a, there ar('. several 
species which are very inconspicuously marked, do not lend tlumiselves 
readily to classification, and the characters for the diilereutiation of which 
are very minute or obscure. The earlier workers generally refrained from 
dealing with such si)ecie.s, or if they did notice them, it was either to 
associate them with previously described forms of similar general appear¬ 
ance, or else to describe them in such a vague nuinner that it is almost 
impossible to decide just what species was before them unless hy exami¬ 
nation of the tyi)e. It is to such an obscure section of Sapromyza that 
bispina Lw. belongs, and when engaged in identifying the material in the 
collection of the Illinois State Lai)oratory of Natural History, I have had 
to separate the species belonging to this group from bispina Lw., and 
iennispina Lw. In the belief that it may prove useful to workers on 
this genus I herewith present, with the description of some new species, 
a comparative talJe for their separation. The species included all have 
the wings unmarked, the cross veins alone heiiig occasionally slightly 
blackened, though the meml)rano of the wing adjoining these veins is 
never infuscated. The face, mesonotum, pleurae, scutellum, abdomen, 
and legs are also without black marks, in the form either of spots, hands, 
or stripes. In making an examination of the wing for markings it is 
better to use a low power hand lens, as then there is no chance of mis¬ 
taking the blacker cross vein for the spot-like infuscation which is present 
Sapromyza i Minel.Ua) nnbila Melander. 
1. .Mesonotum in both sexi's grayish on di.sc; cheeks without any 
hairs, 4 very strong dorso-cxmtrals pn^sent ; 2 rows of strong 
acrostichals; arista short-haired; ahdonum in both sexes shorter 
than thorax; in the & distinctly tapering toward the apex, 
keel-shaped, its height as great as its breadth at base on dor¬ 
sum, in $ broad to end of (ith segment, the 7th abruptly con¬ 
tracted, projecting cone-like, from the fith; legs stout; mid 
til)ia with 3-4 well developed apical spurs; hind lemur in (S' 
with 0-4 in $ with two bristles at apical third on antero-ventral 
surface; hind tibia normal. harli, new species. 
