1929 ] Syrphidae Collected at New Hampshire 371 
Chalcomyia. The last of my June trips was in 1926 from 
the 5th to the 18th. 
It is interesting to note how seasons and conditions change 
in different years in this fascinating place. I was not able 
to duplicate the great catch I made in June, 1917, on the 
flowers of the choke cherry, neither have I been able to find 
so much sap flowing from stumps as in 1920, nor another 
oak log frequented by the two species of Chalcomyia. The 
area covered in collecting extends from the Shattuck Inn 
to about 1700 feet on Mt. Monadnock and from Mead’s 
Brook to Hadley Brook, an area of about tw T o square miles. 
A few trips were made to the top of the mountain (3166 
ft.) but no additional species were taken, all those on the 
bare rocks of the summit being probably derived from 
lower levels. With “The Ark”, where I stayed, as a center, 
I doubt if there is a corresponding area that would produce 
as many Syrphidae in the time mentioned. Of the 113 
species recorded below, six were new to science. In addi- 
tion to these a great many other insects were also collected. 
List of Species 
Microdon ocellaris Curr. June 20, 1923. 
M. tristis Loew. June 14-21, 1923. 
M. ruficrus Will. June 21, 1923. 
Chrysotoxum fasciolatum DeGeer. June 18, 1917. 
Chrysogaster nigripes Loew. June 15-25, 1917. 
C. pulchella Will. June 18, 1917. 
C. pictipennis Loew. June 18, 1917. 
Pipiza femoralis Loew. June 18, 1917. 
P. nigropilosa Will. May 14, ’25, Junt 14, ’23. 
P. nigrotibiata Curr. Allotype June 17, 1917. 
P. quoArimaculata Panz. May 12, ’25, June 19, ’17. 
Heringia salax Loew. June 9, 1920. 
Cnemodon pisticoides Will. May 16, ’25, June 12, ’26. 
Paragus bicolor Fab. May 16, ’25, June 15, ’17. 
Chilosia ( Chilosia ) orillsensis Curr. June 16-18, 1923. 
C. ( Cartosyrphus ) pallipes Loew. June 8, 1920. 
C. ( Cartosyrphus ) sialia Shan. May 18, ’25, June 10, ’26. 
C. ( Cartosyrphus ) slossonw Shan. May 16-18, 1925. 
C. ( Cartosyrphus ) tristis Loew. June 14, 1920. 
