188 
Psyche 
[October 
side of front. Dorsal vittse of thorax much more distinct, the 
two laterals much heavier than the median one. Sternopleurals 
three. Apical cell just closed in the margin; bend of fourth 
vein somewhat more angular. Length 8 mm. 
Known only in the female. Described from a single spe- 
cimen collected by Mr. C. W. Johnson from Brookline, Mass., 
Sept. 6, 1904. Type is property of Boston Society of Natural 
History. 
Eutheresia montana n. sp 
Male: Front twice width of ocellar triangle. No orbitals. 
Antennse three-fifths as long as face, yellowish, the distal half 
darker. Arista short-plumose. Carina small and inconspicuous. 
Vibrissae practicall}^ on level with oral miargin. Facial ridges 
bristly nearly one-third their height. Proboscis one-third head 
height. Palpi yellow. Beard sparse, light colored. Eyes and 
sides of face bare. Thorax black, sprinkled with gray pollen, 
dorsal vittse 5. Post-suturals 4, sternopleurals 2 or 3, 1 stout 
and several lesser pteropleurals. Wings hyaline, venation not 
distinctive. Legs dark brown to black. Abdomen black to 
reddish, sprinkled with gray pollen. First segment without 
macrochsetse, second with a marginal pair, third and fourth 
each with a marginal row. No abdominal discals. Length 
8.5 mm. 
Known only in the male. Described from a single specimen 
collected by A. P. Morse on Mount Mansfield, Vt., at an ele- 
vation of 4000 to 4450 feet, July 21, 1891. Specimen was 
secured from C. W. Johnson thru an exchange of material, and 
bore the designation Eidheresiops sp. That genus however is 
characterized as having hairy parafacials as well as hairy eyes, 
and cannot possibly be construed as including this species. Type 
at Ithaca. 
Myiocera isolata n. sp. 
Male: Head at vibrissse as long as at base of antennae, 
face about two-thirds height of head behind. No orbitals. 
Antennae fully half as long as face. Carina very conspicuous. 
