1924 ] 
Notes on Some New England Phoridce 
43 
pendicular to the costa; fourth vein very slightly and evenly 
curved; fifth faintly bisinuate; sixth and seventh similarly 
sinuate; costal cilia rather long and set moderately close together. 
Type from Salisbury Cove, Maine, July 17, 1913 (C. W* 
Johnson). It is deposited in the collection of the Boston Society 
of Natural History. 
The distinguishing characteristics of this species may be 
indicated by the following tabular arrangement. 
Key to the North American Species of Apocephalus (Females). 
1. Front more than twice as wide as long, ovipositor narrowed 
to tip, without lateral enlargements. . . .wheeleri Brues. 
Front quadrate or nearly so 2. 
2. Costal vein much less than half the length of the broad wing, 
with long, sparse fringe; ovipositor broad, with acuminate 
apex spinicosta Malloch. 
Costal vein about half the length of the wing, which is not 
unusually broad; costal fringe shorter and more dense 
3. 
3. Ovipositor, in dorsal view, swollen near base and apex, with 
a constriction between coquilletti Malloch. 
Ovipositor without lateral expansions, or with one at base 
only 4 . 
4. Scutellum with two marginal bristles, ovipositor with 
widely separated dorsal and ventral valves; wing very 
narrow; front entirely yellow borealis sp. no\ . . 
Scutellum with the second pair of bristles present, though 
smaller; ovipositor without separated valves, wing broad- 
er 5 . 
5. Ovipositor with very strong lateral expansions near base 
where it is three times as wide as at tip . . pergandei Coquillet 
Ovipositor with weak expansions at base which is twice as 
wide as the tip Malloch. 
Two other North American species are known only in the 
male sex. A, aridus Malloch differs in having black halteres 
and a much more sparse costal fringe. A. pictus Malloch differs 
in having four subequal scutellar bristles and a black front. 
