594 Addenda et Corrigenda. 



Page 193 Line 21 for "Mr. Schick" read "Mr. Schlick". 



— 199 — 4 and 5 for "to Sweden" read ''to northern Sweden" 



— 284 — 23 and 24 for "(S. Jørgensen)" read "(L. Jørgensen)" 



— 300 — 25 for "row a black hairs" read "row of black hairs" 



— 305 under the figure for "S. corallae" read "5. corollae'' 



— 326 Syrphus euchrumus; of this species I took a male in Lyngby 



Mose on ^s/g 1916. 



— 356 — 37 for "1859. XII," read "1859. XIIL" 



— 382 — 21 for "i Jutland" read "in Jutland" 



— 435 — 12 for "dowards" read "towards" 



— 447 - 17 for "1875" read "1857" 



— 460 Helophilus consimilis; of this species I took a male in Lyngby 



Mose on ^k 16. With regard to the question about the sexual 

 armature of the hind femora I can state the foUowing; the hind 

 femora have on the posterior side at the base a small elevation, 

 about as in versicolor, but it bears a small clump of short, but 

 dense, black bristles. In the text I suggested that the male 

 genitalia would give a good character, and this also proved cor- 

 rect; the characters from the exterior male genitalia of the three 

 species of the frutetorum-^Yo\x'^ are the following: in frutetorum 

 the outer lamellæ are very small, somevvhat triangular, yellow or 

 reddish; the terminal appendages are long, narrow and curved, 

 varying in colour from yellow to blackish, and shining; in versi- 

 color the outer lamellæ are of a similar shape, a little larger; 

 the terminal appendages are much shorter and broader and less 

 curved, and they are densely chagreened; they likewise vary in 

 colour, but when pale their upper or inner margin remains dark; 

 in consimilis the outer lamellæ are distinctly larger ; the terminal 

 appendages are short and broad with a broad apex, they are 

 almost not curved, less chagreened than in versicolor, and 

 shining; the outer lamellæ and terminal appendages are of nearly 

 equal length; in my specimen both pairs are dark. 



— 465 — 22 for "a each side." read "at each side." 



