Vol. xxiii] ENTOMOLOGICAL NEWS 483 
Dr. Calvert read a note by Prof. Dr. Rudow in Societas 
Entomologica, Vol. XIII, p. 83, for September 1, 1898, con- 
taining a statement of Frau Schreiner, of Weimar, who de- 
clared she had caught a living Mecistogaster, a tropical Amer- 
ican Odonate, at Driesen on the river Netze, east of Berlin, 
Germany, ’in which he questions the possibility of such an 
occurrence. The speaker said that it had occurred to him 
that, since we now know that the larva of at least one species 
of Mecistogaster lives in the water enclosed between the bases 
of Bromeliad leaves (see Ent. News, Vol. xxii, p. 402), it 
might be possible for such a larva to have been carried in an 
importation of such plants to Germany and to have trans- 
formed there. 
Mr. Harbeck spoke of keeping dragonflies alive for a time 
with a view of preserving their colors. 
Dr. Calvert said it was his usual practice to keep them alive 
in papers for a time, so that they may empty the alimentary 
canal and thus better preserve their colors. 
The Librarian reported the purchase of a number of desi- 
derata in books. 
Meeting of October 24, 1912. Dr. P. P. Calvert, President, 
occupied the chair. Nine persons present. 
Mr. Laurent stated that, although Pyrameis atalanta was a 
common butterfly on Five Mile Beach, New Jersey, yet he 
had never seen them in such numbers as they were on the 
third of October of the present year. The butterflies gathered 
together in large numbers on certain bushes, while other bushes 
nearby were entirely ignored. Hundreds of specimens could 
have been captured if one was so inclined. As the species is 
one of our hibernating butterflies, the speaker thought it 
might be possible that the butterflies gathered together pre- 
vious to hibernating, as Danais plexippus does previous to 
migrating to the south. Nearly all the specimens were in 
perfect condition, which indicates a fall brood. . Mr. Laurent 
stated that it was the general opinion that the caterpillars of 
this butterfly left the food plant and found another place in 
which to pupate. However, his experience had been different 
