THE CANADIAN ENTOMOLOGIST 213 



the alate female with bright green abdomen. I have already re- 

 named Buckton's species cratcEgieUa (Entomologist, XLIV, p. 4, 

 13, 1911). Passerini also describes an Aphis cratcegi which is 

 distinct, for he says it has "rusty red spots at the base of the 

 cornicles." 



Koch places Kaltenbach's cratcegi as a synonym of Fons- 

 colombe's Aphis pyri, but, as shown here, Koch's species is distinct. 



(To be continued). 



THEODORE PERGANDE. 



News of the death of Theodore Pergande, which occurred on 

 March 23, 1916, came as a shock to Canadian entomologists who 

 have had the pleasure of meeting him and discussing questions 

 relating to insect life. F'or a number of years, as we all know, 

 his life had not been a very active one. During my last short 

 stay in Washington I was unable to sec Mr. Pergande, but I well 

 remember my first visit to the Bureau of Entomology in 1901, 

 when 1 frequently had the pleasure of meeting him and discussing 

 matters of mutual interest. His liking for my late friend and 

 associate, James Fletcher, was indeed genuine, and this un- 

 doubtedl}' opened the way for a more than passing interest in my 

 visit. 



From the Monthly Lettier of the Bureau of Entomology, 

 U. S. Department of Agriculture, for March, 1916, we learn that 

 Pergande was born in Germany on December 28, 1840. He came 

 to the United States at the time of the Civil War, and before very 

 long entered the Northern army, serving throughout the war. 

 Afterwards he secured a position as assistant to Prof. C. V. Riley, 

 who at that time was State Entomologist to Missouri. W^hen 

 Riley was appointed Entomologist of the U. S. Department of 

 Agriculture, in 1878, he took Pergande with him to Washington; 

 and the latter for many years had direct charge of the rearing work, 

 kept the notes, and made the great majority of the biological 

 investigations upon which the entomological publications of the 

 Department were based. Important results of his studies have 

 been published as bulletins from the Bureau at Washington. His 



