1910] Johnson—Diptera of New England 233 
Palloptera similis n. sp. 
Head and antennz yellow, arista brown, ocellar triangle blackish. Thorax and 
scutellum shining, reddish yellow, plure yellow, opaque. Abdomen shining, yel- 
low, the posterior edges of the segments narrowly and the sides broadly margined 
with black. Legs and halteres light yellow. Wings with the broad anterior of 
dark brown, as in P. superba Loew, but the brown at the posterior cross vein is not 
connected. Length, 6 mm. 
One 2 collected by the writer at Fort Kent, Maine, August 17, 
1910. Type in the New England Collection of the Boston Society 
of Natural History. 
This species closely resembles P. superba but is readily separated 
by its shining thorax and abdomen, with the black margins of the 
segments continuous and not punctate. From P. jucunda it is 
distinguished by its larger size and by the marginal cell being 
entirely brown. 
Palloptera arcuata Fallen. 
Two specimens of this species were collected by Dr. C. S. Minot 
at Northeast Harbor, Maine, July 1, 1909. It has previously 
been recorded in America only from the White Mts., N. H. 
Sapromyza inusta Meigen given as a synonym in Aldrich’s Cat- 
alogue (p. 582) is a good species and a true Sapromyza. Figure 15, 
page 80 of Williston’s Manual North American Diptera, repre- 
sents Palloptera superba and not P. jucunda Loew. 
ORTALIDAE. 
The following species of this family have been collected in 
various parts of New England, extending considerably their 
recorded distribution. 
Rivellia brevifasciata Johns., Tuckernuck Isl., Mass., July 21, 1910 (Dr. G. 
M. Allen). 
Rivellia conjuncta Loew, New Haven, Conn., June 8 (Dr. W. E. Britton); 
Barnstable, Mass., July 4; Woods Hole, Mass., July 24 (C. W. Johnson). 
Rivellia quadrifasciata Macq., New Haven, Conn., Aug. 1, Springfield, 
Mass., July 13 (Dr. Dimmock). 
Rivellia pallida Loew, Mt. Greylock, Aug. 8, 1907 (Owen Bryant); Auburn- 
‘dale, Aug. 9, and Plymouth, Mass., July 27 (C. W. Johnson). 
Tritoxa incurva Loew, East Hartford, Conn., Aug. 9, 1904 (P. L. Butrick). 
