3] ENTOMOLOGICAL NEWS. 393 
oe 
asl c derable quantity of matter is accumulated it may be spread 
Fane : of cloth, carried for the purpose, upon the shore, 
2 ten minutes or so has elapsed the beetles will leave 
ying mass—sometimes by the hundred. One of the best 
t © collect is along the edges of shallow water areas 
* t the vegetable mould and old leaves. The material is 
at ) with a net, placed on a cloth as above described, and 
= % into small pieces in order that dessication may be- 
ptly. At first the mass may scem devoid of life, but as 
rial becomes dry, the beetles will begin to emerge. In 
y Mr. Roberts has taken hundreds of Hydroporus dif- 
i which until then had been regarded as an extremely rare 
- To collect in flowing streams a loosely woven cloth 
i be stretched across and through the stream, and the 
, gravel and sand overturned and stirred up a short dis- 
‘above it. The dislodged beetles will be swept into the 
ith t >» which they will cling for support, and it is only neces- 
- Sary te » draw up the cloth and reap the harvest. On one occa- 
1 Mr. Roberts collected by actual count seven hundred bee- 
n this manner after stirring up about two feet of sand and 
E. 
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He also spoke of the absolute necessity of mounting small 
=~ ¢ Coleoptera from the side, i. ¢., by bending the tips of the 
6 downward at an angle to conform to that of the side of 
aan ne beetle and attaching the specimen in such a way as to leave 
€ center and one-half the under side free. Color is often de- 
= r in the identification of water beetles ; but the characters 
aa a underside are good and reliable, hence the necessity of 
e* ‘this method of mounting. 
ee ‘Mr. Brehme exhibited a box of Hemileuca electra, showing 
q thes tendency toward black individuals, and Mr. Wasmuth ex- 
hibited a specimen of Telea polyphemus with almost black sec- 
Mr. Doll showed specimens of Papilio acauda Oberth. and 
a - spoke of the differences between that species and P. philenor. 
aie Joun A. Grosspeck, Secretary. 
