126 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
Hexatoma megacera (Osten Sacken). 
Anisomera megacera Osten Sacken, Proe. acad. nat. sci. Phila., 1859, p. 242. 
A specimen of this species was obtained bv Dr. W. E. Britton, at 
Chapinville, Connecticut, May 26, 1904. 
Hexatoma Latreille 1809, non IVIeigen 1820 (Tabanidae), will have 
to be adopted in place of Anisomera Meigen, 1818. 
Antocha saxicola Osten Sacken. 
A. saxicola Osten Sacken, Proc. acad. nat. sci. Phila., 1859, p. 219. 
A. opalizans Osten Sacken, Proc. acad. nat. sci. Phila., 1859, p. 220. 
The species described first in the publication will have to be adopted, 
and the later species placed in the synonymy. There seems to be 
little ground for considering one a variety. Whether it will prove to 
be the same as A. infripennis (iMeigen) of Europe remains to be seen. 
Cladura flavoferruginea Osten Sacken. 
This species which has only been recorded from the District of 
Columbia, has been taken by Mr. S. A. Shaw at Hampton, New 
Hampshire, Sept. 30 and Oct. 5. A specimen was also collected by 
the writer at Philadelphia, Pennsylvania, Oct. 4, 1891. 
Cryptolabis paradoxa Osten Sacken. 
In naming some Diptera for Professor John Barlow, I found a 
specimen of this interesting species captured at Wolfville, Nova Scotia. 
Nineteen specimens were collected by the writer at Norwich, Vermont, 
and Hanover, New Hampshire, July 6 to 8, 1908. It was previously 
known only from the types collected by Baron Osten Sacken at White 
Sulphur Springs, Virginia, June 30, 1859: 
Limnophila alleni new species. 
PI. 16, fig. 18. 
cj" . — Head blackish, narrow, the neck and collar brown, rostrum 
reddish brown, palpi black; the first and second joints of the antennae 
