E. T. CRESSOX, JR. 
35 
A female from ^lartiiiiqiie, West Indies, VII, 26, (A. Busck), 
[U. S. X. M.], is (loii])tfully conspecific with the above series. 
Having seen only one specimen, the difference may be due to 
variation, on account of the rather poor condition of the speci- 
men. The yellow antennae and legs are darker and the mes- 
onotum more distinctly irrorated and the abdomen more shining. 
It suggests A\ decorata Williston, excepting that the mesonotum 
is irrorated with brown. 
Notiphila bicolor new species 
Here we have a very unsatisfactory species, mainly on ac- 
count of the lack of a good series. Its similarity to erythrocera is 
evident and of which it is possibly only a variety or subspecies. 
The study of a large series may reveal some variation and make 
it difficult to separate it from that species. In the type speci- 
men there is noticeable contrast between the brown thorax and 
the gray abdomen. The second antennal joint and the fore legs 
are black. 
Description . — cf. Black; base of third antennal joint, palpi, halteres, 
apices of femora, bases of fore tibiae, middle and hind tibiae, excepting pre- 
apical ring, and middle and hind tarsi, yellow or tawny; tarsal fascicle black; 
wings hj-aline, veins j'ellowish. 
Opaque; fro ns, mesonotum and scutellum, yellowish brown or old gold; 
frontal and facial orbits silverjq face gray, tinged with yellow. Cheeks, occi- 
put, pleura, pectus, and abdomen, gra 3 ’. Mesonotum with small, brown, presu- 
tural spot and a similar spot on mesopleura. Abdomen with a pair of elongate 
median and rounded lateral spots on segments two to five; the lateral spots 
diminishing until nearlj’ obsolete on fifth segment. Femora fainth' graj'ish. 
Frons broad as long; orbits parallel. Face slight!}' narrower, concaved 
above ; foveae and carina weak ; about three moderately developed bristles on 
lower third of profile. Cheeks hardly as broad as third antennal joint. Spine 
of second antennal joint small; third joint large, straight above, convex below 
twice as long as second; arista with seven to eight hairs. Scutellum flat, 
broad apically. Abdomen ovate; segments four and five subequal in length. 
Middle femora of male sparingly, andjtheir tibiae minutely, ciliate. ings 
long, with second costal section two and a half times as long as third. Length. 
— 3 mm. 
Holoiype. — cT ; Columbia, Missouri, May 26 to June 8, 1906, 
(C. R. Crosby), [Cornell Univ.]. 
Variation .- — Before me are two specimens ( 9 ?) [Illinois] which 
seem to belong here, showing but little variation from the type. 
The arista, however, has nine hairs and the bristles of the face 
are finer and somewhat more numerous. 
TRANS. AM. ENT. SOC., XLIII. 
