1884. J 
Notes on Cuccinella Dispar. 597 
phorescence is faint, but distinct, and lasts for some 
time. 
On exposure to this light eosine and uranium nitrate 
become distinctly fluorescent. 
No result was obtained with quinine sulphate or an 
ethereal solution of chlorophyll. 
The authors conducted their researches in the Laboratory 
of Maritine Physiology at Havre, a genuine aquarium; 
and their results have been laid before the Academy of 
Sciences. 
VIII. NOTES ON COCCINELLA DISPAR 
(common ladybird). 
By |. W. Slater. 
f HE abundance of this insedt during the past summer 
has given opportunity for a few observations. There 
have been three successive broods, unless, which is 
scarcely probable, the adult specimens of the second brood 
remained alive and adtive for some three weeks after copu- 
lating and depositing their eggs. 
These inserts seem to be protedted by the smell which 
they give off if bruised, and which to human nostrils is very 
disagreeable, and of a kind to indicate an equally offensive 
taste. A single pupa, too, when adhering to the surface of 
a leaf, has a rather close resemblance to the excrement of a 
small bird. But being thus, as may be suspedted, doubly 
protedted, it is curious that these insedts seledt two very 
different kinds of situations where to pass their pupa stage. 
Upon a row of black-currant bushes, where my observations 
were chiefly made, numbers of pupae were to be found singly, 
on the upper surface of the leaves, each generally near a rib 
or in the depression at the insertion of the footstalk. But 
about an equal number of the pupae were to be found on the 
under surface of the leaves. Here they were collected in 
groups of from three to eight, and were secured by a few silk 
threads. 
Whether these threads had been spun by the larvae in the 
