76 
PSYCHE 
[August 
Tliey liave the habit of lioverinf!; in the air, in the woods, along the paths and road- 
ways. 
Pipiza radirum Walsh and ftiley, is not related to this species, as is shown by 
Mr. I). W. ('otpiillett (Proe. ^Va.shingt^)n Kntoin. Soc., VI, p. 200, 1904). 
Pipiza fe.stiva Meigen. 
P. festiva Aleig. Syst. Besehr., Ill, p. 243, 1822; Williston, Syn. N. Ainer. 
Syrphidae, p. 27, 1886. 
Two female sjiecimen.s which agree with the descrijition of this species, were 
taken by the writer at the cascades on the road to Mt. (Ireylock, near North Adams, 
Ma.ss., June 14, 1906. Comparing the.se with the specimen in the Museum of Com- 
parative Zoology, from “Canada,” referred to by ( )sten Sacken in his Catalogue as 
“Pipiza festiva Meigen (or a species closely allied to it)” proves them to be the 
same. There is also a sjiecimen from I lallowell. Me,, in the Harris collection, Boston 
.Society of Natural Hi.storv bearing the M.S. name of “ binolata.” 
That it is a variable species is shown by .Schiner in his Fauna Aiistriaca 1, ]>. 262, 
where he considers the P. oniata, luiiata and arfrmis only variations. In general 
appearance it re.sembles P. femoralis but is readily distinguished by the dark smoky 
brown of the outer half of the wing; it is also a little larger, measuring about 10 mm., 
while fcmoralis averages about 8 mm. The locality “Canada” being questioned 
by Dr. Williston jirobably accounts for its omission by Prof. Aldrich from his (Cata- 
logue. The species has recently been recorded from Boca, Nebr., by Mr. Paul B. 
Jones (Jour. N. Y. Flntom. Soc. XV, p. 89, 1907). 
Pipiza quadrimacul.vta Panzer. 
Syrphus quadriinacukitnx Panz., Fauna Germ., LXXXVI, p. 19, 1803. 
Pipiza quadrimarulata Meigen, .Syst. Besehr. Ill, ]>. 249, 1822; Schiner, Fauna 
Austr., 1, p. 262, 1862. 
On June 8, 1898, I collected a number of specimens referable to this European 
species on the Howers of the Lalirador tea (Ledum, latifoPium) near Bicketts, “North 
Alt.” Pa., alt. about 2300 ft. The same species was collected on Mt. Greylock, 
Ala.ss., June Hi, 1906, at an elevation of 353.'') ft. The specimens agree so closely 
with the de.scri])tion of this species, that there seems to be no doubt of their identity. 
The head, thorax and abdomen are a very dark bluish black, shining, with short thin 
hair; antennae brown; second and third segments of the abdomen, each marked 
