etc., are ectodermic, but the internal generative organs are 
of mesodermic origin. The young forms pass into the stom- 
ach of the mussel, from which it works its way into the peri- 
cardium and kidneys of the host. The details of the adult 
At the meeting of the Linnean Society of New South Wales, 
Nov. 28, 1888, Mr. J. J. Fletcher described twenty new spe- 
cies of Australian earthworms, twelve belonging to the genus 
Cryptodrihis. 
MOLLUSCA.— The land-shell, Subulma octoiia Chem., hith- 
erto regarded as peculiar to the West Indies, has been found 
in a coffee plantation in New Caledonia. Its introduction is 
as yet unexplained. 
ENTOMOLOGY. 
An Insect Trap to be used with the Electric Light. 
— Some experience in collecting insects at the electric lights 
last summer led me to the conclusion that a simple piece of 
apparatus, which could take the collector's place, when he was 
forced to go home to steal a few hours for sleep, would be a 
boon to the insect- hunter. Having once gained the idea I at 
once endeavored to realize it, with the following result : 
I obtained a three-quart tin pail, represented by a in the ac- 
companying drawing, about six and one-half inches long by 
five and a half m diameter, and had a tinner cut out of the 
bottom a three-inch circle. Then taking a funnel six inches 
and a half m diameter at its widest part my tinsmith cut off the 
smaller end so as to leave an opening at this end of two and a 
quarter inches in diameter. This frustrum of a hollow cone, b 
m the drawmg, is then soldered fast to the bottom of the pail 
^, the flaring end being outward and the smaller end projecting 
withm the pail a half inch or more. A flat, hexagonal piece 
of tin, c, was next made to fit the funnel, b, and, after being 
carefully adjusted so as to stand vertically across the center of 
the mouth of the funnel, was firmly soldered in this position. 
Two pieces, dd, of steel spring. No. 8 wire, were then fastened 
to opposite sides of the funnel. These wires when pressed to- 
gether at the top will pass into the small opening in the bottom 
of the globe of the U. S. Electric Light Co.'s lamp, and when 
released from pressure will spring back to their normal po- 
