184 
Psyche 
[October 
NEW NORTHEASTERN DEXIINiE (DIPTER.E; 
TACHINID^). 
By Luther S. West. 
Department of Entomology, Cornell University, Ithaca, N. Y. 
The following preliminary descriptions are offered at the 
present time in order that the species names may be included 
by Mr. C. W. Johnson in his ^Dist of New England Diptera’^ 
soon to be published. Full descriptions, which have been in 
manuscript for some time, will be published in the author’s 
Monograph of Northeastern Tachinidse, now in process of prepa- 
ration. 
Ptilodexia neotibialis n. sp. 
Alale: Front, at narrowest part, one and one-half times 
width of ocellar triangle. No orbitals. Antennae nearly half as 
long as face. Facial carina small. Vibrissae distinctly above oral 
margin, one or two bristles above each. Proboscis rather slender, 
nearly as long as head height. Palpi reddish-brown. Beard 
dense, light in color. Sides of face bearing coarse, dark hairs. 
Thorax black, sprinkled with gray pollen. Dorsal vittae usually 
5, all indistinct. Post-suturals 3, sternopleurals usually 3, one 
stout and several lesser pteropleurals. Wings hyaline, venation 
not distinctive. Legs black. Adbomen black, the sides reddish. 
Chaetotaxy variable. First segment usually with one pair of 
marginals, second with two or three pairs of discals and one pair 
of marginals, third with two or three pairs of discals and a mar- 
ginal row, fourth segment densely clothed with spines. Length 
14 mm. 
Female: Front, at narrowest part, as wide as either eye. 
Orbitals present. Bristles of abdomen usually as follows; — 
first segment without macrochsetse, second with a discal and a 
marginal pair, third with a discal pair and a marginal row, fourth 
with a discal row and a marginal row. 
Described from eleven male and five female specimens 
