A. P. Morse.
Leptura emarginata in New England.
Psyche 22:212, 1915.

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212 Psyche [December
project a little above the cork, place the cyanide in this small vial and stop the mouth of the vial, above the poison, with a cotton plug; or the smallest shell vials, 7 x 25 mm., can be used for the same purpose when sunk in the corks of ordinary 2 dram vials, or similar ones. Such vials are easier to obtain and have greater durability for field collecting than the larger tube vials which so often break without any provocation. In order to catch the eye more readily, the upper surface of these poison-filled corks may be marked with a large ink "P," and there is less chance of them being used for material intended for rearing. Where shell vials are not to be had, it would be easy to cut a short length of glass tubing and seal one end in a lamp, inserting this sealed end in the cork as if it were a small vial.
When working in the field at a distance from supplies, it is pos- sible to carry two or three corks containing these small vials with- out the poison, or even with the poison, tightly corked. As they are needed, uncork and insert in the killing bottle. I am using the large tube vials for killing and these have corks that are inter- changeable. With such a holder for the poison there is much less annoyance from disagreeable moisture than with other forms of poison-bottles.
This idea is probably not a new one, indeed Prof. C. T. Brues informs me that he has, for a number of years, used a bottle similar to the one described above. He further adds that if a small amount of crystallized boracic acid be added to the cyanide it causes more rapid decomposition of the cyanide and an increased killing power results. The addition of the boracic acid was suggested to Pro- fessor Brues by Dr. George Bock of St. Louis, years ago. LEPTURA EMARGINATA IN NEW ENGLAND
Mrs. W. I?. Buck of Melrose Highlands, Mass., brought to me a short time since a specimen of this fine longicorn beetle taken by her at Pequaket, N. H., about July 20, 1915. I have placed it, with the donor's sanction, in the New England collection of the Boston Society of Natural History,
A. P. MORSE.




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