| 
1884) 
à re-classification of the rotifers. His paper, 
Zoölogy. 1155 
do not imply any such close genetic relationship to them as has 
been suggested” (Proc. Zool. Soc. London, 1884). 
Mr. Mason has detected the females, before unknown, which 
are wingless and of larger size than the males. He also discov- 
ered in India larvæ of a species apparently living in society. 
Entomotocicat Nores.—A case of sexual attraction in Prionus 
is noticed by Anna K. Dimmock in Psyche for April. A female 
bout to oviposit was caged, when one male after another flew to 
the cage, so that a great many males were taken in the afternoon. 
“On account of the presence of so many males a number of females 
made their appearance, showing an attraction of the female to the 
nicated to the Paris Academy of Science, as the result of his 
researches upon the movements of the heart in insects during 
their metamorphosis, the statement that this organ continues to 
beat during the phenomena of histogenesis. In Volucella zonasia 
and Eristalis æneus it was observed that when movement was lost, 
on the twelfth day in the first species and the ninth in the second, 
pe 
the heart is occupied in the histological changes of that organ, 
above all in the formation of an aortic region corresponding to 
formation of the thorax.——The researches of M. Carlet 
rop 
the wound and produces a new afflux of liquid at the roar 
Sting, which is thus at once an aspirator and an injector: 
ZOOLOGY. 
ro CLASSIFICATION OF THE Rorrrers—Dr. C Taly, ateanpts 
uarterly Journal of Microscopical Sce spinak 4 js illustrated 
VOL, XVITI.—no, XI, 73 
