98 ENTOMOLOGICAL NEWS. [April, *O2 



so far consulted. In Biol. Cent. Am. Het. 2, 320, pi. 69, fig. 

 3 and 4, the male and female neumoegenii are figured. Whether 

 fig. 4 is in reality the female neumoegenii may be considered 

 doubtful when it is known that a structural examination of my 

 series of over one hundred examples taken through three sea- 

 seasons fails to reveal a single female of this species. It is 

 therefore, my conviction that the female Megathynnis neumoe- 

 genii remains unknown. The reference of nrsus, an insect of 

 more than twice the average size of neumoegenii, with body 

 half an inch in thickness and more massive than any diurnal 

 known to our fauna as the female of the smallest species in the 

 genus to which it belongs is, however, too radical to be accepted 

 without positive proof, and it is for this reason that I bestow a 

 specific name on what I consider a described species. 



Lost Knowledge. 



BY C. F. BAKER. 



The recent death of Dr. Lugger again calls attention to a 

 matter which has been discussed in various journals before. 

 Dr. L,ugger was a special student of the Coleoptera and had a 

 very fine collection. He also studied Minnesota moths and had 

 started a valuable collection when I visited him years ago. It 

 was most interesting to go over the beetles with him and listen 

 to his discussions of habits and obscure points in classification; 

 main 1 facts concern ing which, according to his ozcn statement, wrc 

 unpublished. He has departed to the "bourne from which no 

 traveller returns," and all that interesting array of knowledge 

 the gatherings of many, many years of patient and scholarly 

 investigation have gone with him ; for Dr. L,ugger published 

 very little. 



Not long ago I reported on what I considered the solution 

 of a very vexing problem one that had long puzzled me and 

 one that had consumed much time and thought. Soon after, I 

 received a letter from one of our old-time authorities, in which 

 he says : "What is all this fuss about? You are right, but I 

 have known all this for many, many years." He had known 



