TABLE OF CONTENTS 
besides a multitude of miscellaneous notes on the localities of the 
specimens, on the meaning of the labels and etiquettes of differ¬ 
ent shape and color occurring in it, and on the collectors who 
have contributed these specimens. 
XIV My Relations with Loew since my Return to Europe in 1877, 
until his Death in 1879 . 9G 
Since my visit to Loew in Guben in September, 1877, when I 
had the North American collection packed up and sent to the 
United States, I have not met Loew again. However, we ex¬ 
changed some letters. His last letter was dated April 21, 1878, 
a year, day for day, before his death. It was written under dic¬ 
tation, and the signature betrayed a tremulous hand. 
XV Prof. Fr. Hermann Loew. An Obituary Notice by C. St. 
[Carus Sterne] .99 
Translated by me from the Deutsche Entomologische Zeit- 
schrift of 1879. Cams Sterne is a pseudonym of the well- 
known author Dr. Ernst Krause, a scholar of Loew, and later 
his political friend. 
XVI Characterization of Loew as a Dipterologist.103 
Appendix to Chapter XVI. Notice of the Dipterologist, 
Ferdinand Kowarz.135 
In my “ Introduction ” (p. 21) I have referred to this Chapter in 
the following terms : “ After twenty-nine years of relations with 
him, I possess in his voluminous correspondence a source of in¬ 
formation which enables me to accomplish this task better than 
anybody else, and I am convinced that I have fulfilled it with 
impartiality.” To this Chapter a full-length portrait of Loew is 
appended (the first ever published). 
XVII Philipp C. Zeller as a Dipterologist .137 
“ In Zeller, the lepidopterist, the ideal of a perfect dipterol¬ 
ogist was lost,” is the motto of this Chapter. Zeller was, after 
Rob.-Desvoidy, one of the few who put in practice the notion 
that dipterology is the science, not of pinned Diptera only, but 
also of Diptera in life. The two articles on Diptera by Zeller 
in Oken’s Isis, 1840 and 1842, filling one hundred and thirteen 
quarto double-column pages, “ are perhaps the most delightful 
reading on Diptera in existence.” The most attractive depart¬ 
ment in these papers is the biological, “ consisting in accounts of 
the habits and of the demeanor of flies,” “ noticing peculiari¬ 
ties in the behavior of almost every species,” etc. Such is the 
well-deserved praise which I have bestowed upon Zeller. And 
yet his publication on Diptera, buried as it is in the ponderous 
volumes of Oken’s Isis “of sixty years ago, has remained 
almost unknown to the majority of dipterologists.” 
My Chapter on Zeller, besides a short biographical notice, 
contains an account of the beneficial influence he had exercised 
