SPECIAL REPORT ON THE COLLECTION 
95 
10. Small triangular labels, yellow and green, mark a consider¬ 
able number of specimens from Western New York , which I received 
for determination from Prof. J. H. Comstock with the permission 
to retain duplicates. 
Some further notices may be useful: — 
Diptera from Nebraska , some of which are described in the 
“Centuries” (for instance, I, 37,57, 79, 80; II, 9, 15; IV, 52, 73, 
91; V, 42; VI, 15, 18; VII, 27, 47, 48; VIII, 43, 94; IX, 21), 
were collected by Dr. F. V. Ilayden, during the earlier period of 
his career. I mention this, because the name of the collector has 
in most cases been omitted by Loew. 
Diptera marked N. II. (New Hampshire) on white, square, 
printed labels, were all collected by me in the White Mountains, 
New Hampshire, whether my name is mentioned or not (this con¬ 
cerns especially Century IX). 
Between the years of 1858 and 1861, I received several lots of 
Diptera, collected by Mr. W. II. Edwards (of Coalburgh, Virginia) 
principally in the State of New York; but I do not remember 
whether they were separately labeled or not. Edwards’s name often 
occurs in the “ Centuries,” especially in the first. 
Several specimens from California I received from Mr. Alexander 
Agassiz. They are described in the “ Centuries,” as received from 
him, but whether they bear particular marks in the Collection, I do 
not remember. 
Many new species of Diptera contributed by Dr. William Le 
Baron, in Geneva, Ill., will be found described, principally in 
Loew’s “Centuries” ( e.g . Century II, VI, etc.). 
Diptera from Oregon (Centuries VI, 69) and Matamoras (Cen¬ 
turies VI, 65) are wrongly attributed to me in the “Centuries.” 
I have never visited these regions. 
Before the arrival, in 1877, of the collection from Guben, I had 
made a present of my own collection of North American Diptera 
to the Museum of Comparative Zoology in Cambridge, Mass, 
(compare Chapter XII). With this collection I amalgamated the 
materials in Diptera which had been accumulated in the Museum 
before my arrival, principally by its Custodian, Mr. Philip IE 
Uhler, predecessor of Dr. Hagen. Of the result of this operation 
