JOHNSON: NEW TIPULIDAE. 117 
Dolichopeza americana Needham. 
PI. 15, fig. 1. 
D. americana Needhani, N. Y. state mus., bull. 124, p. 211, pi. 16, fig. 5, 1908. 
To the distribution of this species, the type of which was obtained 
at Old Forj2:c, New York, in August, I can add the following localities: 
Hammond's Pond, near Brookline, jNlassachusetts, June 11, 1905; 
Auburndale, Massachusetts, July 11, 1904; North x\dams, Massachu- 
setts, July 19, 1900, collected by the writer; and a specimen froni 
Rigolet, Labrador, July 16, 1906, collected by Dr. G. M. Allen. 
From the description it seems very close to D. albipes Strom, but 
European specimens are necessary to decide positively. 
Oropeza Needham. 
In this genus the genitalia, though simple in structure, seem to form 
excellent characters for defining a number of species which otherwise 
would be hard to separate, although there are minor differences, 
which, when studied in connection with the genitalia, are readily ap- 
parent. 
Osten Sacken (Studies on Tipulidae, pt. 1, p. 158, 18S6) in referring 
to the genus Apeilesis Macquart, says: "What IMacquart takes for 
and figures as the male forceps, are simply digitiform appendages to 
the forceps, homologous I believe to similar, although smaller, ap- 
pendages of Dolichopeza and especially of the North American D. 
annulaius Say." Skuse ("Diptera of Australia," Proc. Linn. soc. 
New So. Wales, vol. 5, p. GO, 1891) refers to them as digitiform ap- 
pendages. The following is a provisional table of the species:— 
1. Tarsi, at least, entirely white ....... 2. 
Tarsi yellow or brownish ........ 3. 
2. Digitiform appendages short or rudimentary; ventral margin deeply 
and narrowly emarginate albipes n. sp. 
Digitiform appendages moderately long; ventral margin broadly 
emarginate subalbipes n. sp. 
3. Halteres with dark brown knobs ....... 5. 
Halteres entirely yellow ........ 4. 
4. Style short, simple; ventral margin deeply and narrowly emar- 
ginate sayi. 
Style short, forked; ventral margin broadly emarginate similis n. sp. 
