42 STUDIES IN AMERICAN EPHYDRIDAE (dIPTERA) 
Variation. — A male bearing the same data as the type, differs 
in having the series of facial bristles more extended and the aristal 
hairs seven in number. There is also faint indications of thoracic 
maciilation. A possible intergrade may invalidate this variety. 
I have also a male, labeled “D. C., 8. 19. 99”, [U. S. N. M.], 
which is not typical, but I hesitate to recognize it as a distinct 
species or variety upon such meager and uncertain data. It 
seems to simulate this variety, but the thorax shows faint macula- 
tion, the facial bristles are weaker, in more extended series, and 
the fore tibiae and tarsi are entirely infuscate. 
Xotiphila vittata Loew 
1862. Notiphila vittata Loew, Mon. Dipt. N. Am., i, 136. 
This and the following species form a small group which I have 
not otherwise recognized. Although typical of the cinerea group, 
these species have the male abdomen elongate, arched and cylin- 
drical, and sunken on the dorsum; not flattened and ovate as is 
usual with the other species. The females, on the other hand, 
are very similar, in fact they are difficult to separate from those 
of virgata. In the latter species, however, the face is broader, 
the abdominal spots are more isolated, with less tendency to 
coalesce into bands; the lateral stripe of the mesonotum is broad, 
completely traversing the sutural depression and extending to 
the supra-alar region. 
My specimens agree so well with the original description that 
I have no doubt of the determination. 
Description. — Similar to virgata in color and general markings. Frons not 
vittate; mesonotum faintly and narrowly vittate medianly, but with a broad 
lateral stripe extending over the sutural depression to the supra-alar region; 
mesopleura also vittate above and below; scutellum with lateral margins 
brown. Abdomen with four series of spots of which the median pair are elon- 
gate, generally attaining apices of segments, sometimes narrowly connected 
basally with the lateral spots on segments two, three and five; ventral lobes 
also with series of spots. 
Structurally similar to nudipes, but the bristles of legs normal and well de- 
veloped. Length. — 3 mm. 
Type. — 9 ; Middle States, [Mus. Comp. Zobl.]. 
Specimens Examined. — 3 cf , 7 9 . 
New Jersey: Cape May, VI, 7, 1914, (H. S. Harbeck), 1 9, [Harbeck]. 
Maryland: Pope’s Creek, V, 22, 1896, 1 cf, 2 9 , [A. N. S. P. and H. N. M.]. 
District of Columbia: VIII, 19, 1899, 1 9, [Ohio]. 
Ohio: Sandusky, VI, 30, 1900, 3 9, [Ohio]; VII, 1914, 1 9, [Ohio]. Wau- 
seon, VIII, 25, 1902, 1 S', I 9, [Ohio]. 
