E. T. CRESSON, JR. 
31 
3. Tarsal fascicle of male consisting of a long bristle, nearlj^ as long as first 
tarsal joint; abdominal bands of female small, abbreviated laterally. 
macrochaeta p. 54. 
Tarsal fascicle consisting of a minute black bristle; abdominal bands of 
female broad, almost attaining lateral margins atrisetis p. 52. 
4. Abdominal bands obscured and attenuating laterally; arista with 12 to 
14 hairs olivacea p. 52. 
Abdominal bands broad, shining, not attenuating laterally; arista with 
8 to 10 hairs 5 
5. Abdomen slender, elongate; tarsi black atripes p. 50. 
Abdomen ovate; tarsi more or less pale 6 
6. Western nearctic species occidentalls p. 51. 
Eastern nearctic species scalarls p. 49. 
7. Frons and mesonotum distinctly striped 8 
Frons and mesonotum not distinctly strij)ed; sixth abdominal segment of 
male conical with two approximate, apical, upcurved bristles 10 
Dark abdominal bands broad and broadly attaining apical margins of 
segments (Neotropical species) frontalis p. 56. 
Dark bands not or narrowly attaining apical margins, sometimes reduced 
to spots 9 
Frontal stripes uelvety black var. signata p. 57. 
Frontal stripes obscured, not velvety black pulchrifrons p. 55. 
10. Second antennal joint black; sixth abdominal segment of male with a 
long, cylindrical, bristle-bearing appendage furcata p. 59. 
Antennae yellow; sixth segment without appendage . . . bispinosa p. 58. 
8 . 
9 
Subgenus Notiphila 
The species comprising this subgenus are generally ochreous 
in color, becoming cinereous below, opaque; seldom are the dark 
abdominal markings shining. The facial bristles are usually 
stout, limited to three or four in a series, not or scarcely attain- 
ing the middle of the facial profile. In those having these bris- 
tles hair-like the series is more extended, thus showing a ten- 
dency to intergrade with species of the subgenus Agrolimna. 
In the present suljgenus the antennae are generally, and the 
palpi are always, yellow or tawny. The abdomen is marked 
with brown spots, or in some species is immaculate; while on 
the other hand some have the spots more or less transversely 
connected, forming basal bands on the segments. However, 
these bands always have their posterior margins emarginated, 
or are constricted between where the spots normally are, and 
are more or less dilated at the middle longitudinal gray stripe. 
The middle femora of the male are more or less tlistinctly ciliate 
TRAXS. AM. EXT. SOC., XLIII. 
