( xxxi ) 



lent me valuable specimens from his private collection for 

 comparison. 



He was perhaps too much inclined to regard the Palsearctic 

 fauna from a narrow point of view, partly because he did not 

 know the North American and Japanese species, many of 

 which undoubtedly belong to it, so well as the European and 

 North Asiatic forms. He was also rather inclined to select 

 typical specimens so called for his collection, as he felt the 

 difficulty of placing the numerous more or less intermediate 

 variations which occur under one or other of the named 

 varieties which he recognized and adopted. His descriptions, 

 however, are unusually detailed, clear, and easy to follow, 

 and to those who like myself possess a very imperfect know- 

 ledge of the German language, his writings, like his speech, 

 were far easier to understand than those of many German 

 authors. 



The introduction to his Catalogue of 1871 shows how 

 strongly he felt the importance of accurate nomenclature, and 

 how hard he worked to carry out a system which should be 

 universally adopted. 



His love of order and neatness was well illustrated in his 

 private collection, which was better arranged and kept in 

 better condition than any I have seen, considering how much it 

 has been used for study during his whole life. He had an 

 excellent library and used it freely, and though, like every one 

 else, he made mistakes at times, yet he was by no means 

 bigoted in adhering to views which he had adopted when 

 working with less complete materials and knowledge. 



In his home life he was fortunate, his wife being a most 

 worthy helpmate to such a hard worker. He was a fair 

 linguist, speaking Spanish and French fluently, English and 

 Norsk very faiidy. In person he was tall and strong, and 

 though somewhat shortsighted when I knew him, he had an 

 extremely sharp eye for the distinctions of species. 



He never seemed to take much interest in the biological 

 questions which of late years have to some extent engrossed 

 many entomologists, and was somewhat indifferent to structural 

 details, which he had neither the time nor the inclination to 

 study closely. Therefore he refused to attach much weight tq 



