LIST OF MY ENTOMOLOGICAL PUBLICATIONS ETC. 
211 
and institutions: Prof. Rosenhauer in Erlangen, Professors Siebold and 
Gemminger in Munich (June 3—9), R. Schiuer and Dr. Frauenfeld 
in Vienna (June 9 — 15), the Museum in Berlin (August 10—12). As the 
Franco-German war had broken out at that time, I felt it my duty to re¬ 
turn to my post of Consul-General in New York, which I reached Sept. 6 
1870. The news brought by the pilot at our arrival was that of the sur¬ 
render of Sedan! (Continued on p. 212.) 
1870 . 
33. On the transformations of Simulinm. 
Amer. Entomologist and Botanist, II, p.227—231; 1870, w. woodcuts. 
NB. A popular exposition of the subject, with but a few original observations. 
34. Biological notes on Diptera. Article second (comp. No. 32, 
1869) . 
Trans. Amer. Entom. Soc. Ill, p. 51—54; March 1870. 
35. Contributions to the Natural History of the Cynipidae of the 
United States. Article fifth; compare No. 25, 1865. 
Trans. Amer. Entom. Soc. Ill, p. 54—64; 1870. 
36. Report on American Dipterology in 1869. 
Prepared for A. S. Packard’s “Record” etc. for 1869, p. 30-37 
(compare No. 31, 1869). 
37. Letter to the Trustees of the American Museum of Natural 
History in New York, dated Jan. 21 1870. 
Printed in the First Report of this Museum. 
NB. In this letter I informed the Trustees of the gift I had made for the 
projected Museum of my general collection of North American insects of all 
orders (excepting Lepidoptera), which I had formed during my residence in the 
United States. This collection consisted of about 3800 specimens, determined 
by the best authorities in each Order. My principal aim in making this gift 
was thus to form a nucleus of a collection of native insects always open to the 
public; a collection in which any schoolboy might determine at sight the more 
common species. I believe that this my intention was actually carried out in 
the Museum soon after its erection, but I have not heard of it since. The Diptera 
were represented by the more common species oidy, my principal collection of 
this Order having been deposited in the Museum of Zoology in Cambridge, Mass. 
1871 . 
38. Biological notes on Diptera. Article third (compare No. 34, 
1870) . 
Trans. Amer. Entom. Soc. Ill, p. 345 — 347 (Dec. 1871). 
