1925] 
Note on Panurgidce (Bees) 
113 
NOTE ON PANURGIDCE (BEES) 
By Charles Robertson. 
Carlinville, Illinois. 
That the cubital cells in Perditinse are the first and third, as 
stated in my Synopsis of Panurgidse, Psyche, vol. 29, p. 195, was 
pointed out by Cockerell (Proc. Acad. Sci. Phil. Jan. 1896, p. 30) 
who says that on one side of the type $ of obscurata a petiolate 
second cell shows. A male taken by me at Orlando, Florida, 
shows this second cell in both wings. In a recent paper I notice 
that the third cell is called “second.” The relative size of the 
two cells would be different, when the two veins coalesce, from 
what it would be if one were obliterated. 
On page 161 of my paper it is stated that Zaperdita maura 
is an oligolege of Physalis. In the Canadian Entomologist vol. 
35, p. 334, Crawford says that Graenicher regards it as an oli- 
gotropic visitor of Physalis. Graenicher used the term oligotro- 
pic in the sense in which I have used it, but that term is used in so 
many senses that I have adopted oligolege, or oligolectic bee, as 
more precise. 
Another Instance of the Northward Migration of Odonata 
in the Spring. 
Mr. John B. Paine has informed me that on either May 
25th., or 26th., 1923 as he crossed the street from a store to the 
Custom House in Boston, he noticed on the side walk over a 
dozen dead dragon-flies. He attached no particular interest to 
their presence but noted that they were of medium size and dark 
colored. In questioning Mr. Paine about the matter he told me 
that the area he crossed was very limited and therefore the large 
number of the insects and their presence on a city side-walk 
attracted his notice. Evidently, I believe, they were casualities 
from a migrating horde such as has been described by Bradford 
Torrey as seen twice in the city of Boston on a spring northward 
migration. 
R. Heber Howe, Jr. 
The David Mason Little Memorial 
Museum of Natural History. 
