342 THE AMERICAN NATURALIST. [Vor. XXXV. 
STETHOPATHIN&. 
Wingless or with rudimentary wings, eyes reduced, abdominal plates usu- 
ally much reduced, coxa very long, face deeply concave, eggs usually very 
large and causing an enlargement of the abdomen. Males, as far as posi- 
tively known, easily correlated with the females, but much like the males of 
the Phorine. 
GENERA OF STETHOPATHINA (FEMALEs).! 
I. Wings and halteres absent . i ; . T ; . . 5 
Either wings or halteres or both present `. : i i : 2 
2. Both wings and halteres present, the former abbreviated — . . 3 
Either wings or halteres present, never both ; à . . 
Arista of antenna dorsal, abdomen strongly chitinized throughout, pro- 
boscis much longer than height of head, very slender 
Psyllomyia Lw. 
Arista terminal, abdominal segments small, the greater part of the abdo- 
men membranous, proboscis shorter than height of head, stout 
Commoptera gez. nov. 
Abdomen greatly swollen, its apical segments bent forward on the ven- 
tral side of abdomen. Wings absent, halteres present 
: Termitoxenia Wasmann 
Abdominal segments normal in position, wings present, halteres absent 
Ecitomyia gez. nov. 
Ocelli present s : 3 ; i : Stethopathus Wand. 
Ocelli absent i à è í à i : : 6 
Head longer than wide, subtriangular, palpi when viewed from above 
extending far beyond anterior margin of head. Two macrochete on 
posterior margin of head .- . ; ; Wandolleckia Cook 
Head wider than long, trapezoidal, palpi not extending forward beyond 
front margin of head : ; : Chonocephalus Wand. 
LH 
= 
un 
e. 
If we desire to consider /Enigmatias as belonging here, it 
may be separated from all the other genera by its stout blattid- 
like form, with the thorax as wide as the abdomen. The 
problematical male (Platyphora) differs from the male of Ecito- 
myia in having no macrochzetze on the dorsum of the thorax. 
1 The male of only one genus (Ecitomyia) is known and it may be recognized 
by the diagnosis given farther on. 
