540 General Notes. [ May, 
what we have called a “vicarious chorion,” and after the chorion 
or egg-shell splits, becomes a protective membrane. 
Mr. Ayers’ observations on the egg-parasite, Teleas, are full and 
valuable, showing, as he claims, the absence of embryonic mem- 
branes, and. the occurrence of a larval form intermediate between 
the blastosphere and the cyclops larva of Ganin. 
The illustrations are admirably clear, but the plates are too 
much crowded; this, however, is not the fault of the author. 
A PossiBLE SENSE ORGAN IN CAMPODEA.—Several years ago, 
be a possible sense organ. On the tip of this 
joint is a body closely resembling a couple of 
beans placed side by side and supplied by the 
tip of the antennal nerve. The general relations 
are shown in the accompanying figure. 
that I have no further observations which would 
tend to show the histology or functions of this 
organ. I mention it at this time to call the at- 
tention of others to it, in the hope that our 
knowledge of it may be increased. 
ES are 
My reason for supposing it a sense organ 
ard has considered as sense organs 1n the cauda 
stylets of Chrysopila and the palpi of Perla. — : 
A further feature which may here be mentioned is eae 
which Campodea has of retracting its antenn&. On asi 
are extended to their full length, and then pee a | 
appearance. The insect can, however, by the act resent 
priate muscles, so draw the joints into each other that my P mibr 
the appearance shown in my figure. I have rapa Recor’ 
capacity in Scolopendrella—/. S. Kingsley, in S fe, thirty- 
: poe farmer's wile, 
LUCILIA MACELLARIA INFESTING MAN September 27: 1875, 
with a headache and a flushed face. She stay ed at Wy ne in the 
a great distance from the house. Tuesday evening what 
began to run from the right nostril, which was ~~ 
1 See The Development of Limulus polyphemus. By A. 5. 
Bost. Soc. Nat. Hist., March, 1872, p. 160, 161. 
