36 
Psyche 
[March- June 
position of a certain intermediate specimens and possible 
application of some Neotropical name make it inadvisable to 
provide a name for this as yet, although its distinctness tinc- 
torially is as marked as certain species now differentiated 
from nigrovittatus for example. 
Questionably associated with the typical form is a con- 
siderable series of flies from Florida and neighboring states, 
the females of which have slightly wider fronts (about 1:5) 
and almost square through small callosities. The sides of the 
abdomen are often broadly reddish, the lateral dark stripes 
missing or obsolescent. The males of this and the typical 
form differ only in the regularity and width of the abdominal 
stripes, particularly the sublateral ones, duller pollinose 
thoracic dorsums, and possibly greater extent of the en- 
larged facets. 
A portion of the complex thus still remains in unsatis- 
factory condition with no immediate hope of clarification, 
but it is confidently believed the recognition and separation 
of the preceding species and subspecies will at least narrow 
the problem. A key is here offered, not only to separate 
these recognized forms, but to call attention to other prob- 
lematic variants for at least a part of which names may 
already be available when the Neotropical relatives have 
been adequately reviewed. 
1. Males 2 
Females 8 
2. Scutellum and thorax concolorous, dark 3 
Scutellum reddish on the posterior margin 6 
3. Upper eye facets markedly enlarged, glabrous or 
imperceptibly hairy 4 
Upper eye facets but little enlarged, normally plain- 
ly hairy (Texas) 5 
4. Middorsal abdominal stripe chalky white 
lineola Fabr. 
Middorsal and sublateral stripes yellow .. lineola subsp.? 
5. Femora infuscated; scape somewhat enlarged 
amplifrons Krob 
