'ZoS THE CANADIAN ENTOMOLOGIST. 



margin very close to the t. p. line. There is an almost upright difFuse 

 median shade through the middle of the median space. Orbicular a small, 

 round, yellowish dot, scarcely traceable in the female, more obvious in the 

 male. Reniform narrow, upright, yellowish, with or without a black dot 

 inferiorly. Secondaries dull, smoky. Beneath, powdery, primaries with 

 one, secondaries with two more or less imperfect transverse lines, aU wings 

 with a discal lunule. 



Expands : .95-1.05 inches = 24-26 mm. 



Habitat. — Arizona, Minnehaha, Yavapai Co., Aug. 18 to 21. Mr. 

 Hutson. .Southern Arizona, Aug. 1-15. Poling. 



Seven males and four females, all in at least fair condition, and all 

 save one taken by Mr. Hutson. The species is an ally of flavipunctalis 

 ?iX\di pulverosalis by its even median lines, but differs obviously in size, in 

 the obscure maculation and in general habitus. The males are uniformly 

 darker, more powdery and narrower-winged than the females, and, as a 

 rule, the secondaries are immaculate. In one specimen an extra-median 

 pale line is fairly defined, and in two others it is indicated toward the 

 inner margin. 



BARON C. R. VON OSTEN SACKEN. 



It is with deep regret that we record the death of our greatly-esteemed 

 friend. Baron Osten Sacken, the eminent Dipterist, who died at Heidel- 

 berg, Germany, on May 20th, in the seventy-eighth year of his age. He 

 was born at St. Petersburg on the 21st of August, 1828, and for many 

 years was attached to the Russian Embassy in Washington, and afterwards 

 was Consul-General for Russia in New York. During the twenty one 

 years he spent in America he prepared and published his own works on 

 Diptera, and those of D;. H. Loew, who was unable to write in English. 

 To him is entirely due the first scientific knowledge of the North American 

 species belonging to this great order of insects. A little over two years 

 ago he published the "Record of his life-work in Entomology," a review 

 of which will be found in the Can. Ent. for December, 1903, Vol. XXXV, 

 p. 344, and to which we would refer the reader who- wishes for further 

 information respecting the career of this remarkable man. He was an 

 honorary member of the Entomological Society of Ontario. Only a few 

 months ago the writer had a cheery, interesting letter from him ; he was 

 then in excellent health and spirits, though so near to fourscore years of 

 age. C. J. S. B. 



