VI MONTHLY PROCEEDINGS. 



On the table were twenty-four specimens of Lepicloptera presented 

 to the Academy by Dr. Dolley, and phiced in the care of the Section. 



Dr. Skinner exhibited two cocoons of the Cecropia moth, and in- 

 dicated the method of determining the sex from external appearance, 

 the male having the cleaner cocoon. 



Mr. Aaron exhibited a specimen of Papilio j)hilenor ; it had been 

 captured in Logan Square, near by, on the 26th inst. The earliest 

 appearance in this locality previously noted was May 20th, the usual 

 time of appearance being June. He thought that the specimen ex- 

 hibited had emerged in captivity and had escaped. Last year he 

 had found the caterpillar on the moon vine, Ipomea nodiluca. 



Dr. Horn exhibited a series of Chcetocnona and Longiiarsus, and 

 explained the characters used in the separation of the species. 



Dr. Skinner noted the reception from the northwestern territories 

 of a milk-weed butterfly smaller than those taken in this locality. 



Mr. Cresson desii'ed an expression of opinion regarding the use of 

 Napthaline in collections, stating that complaint had been made that 

 it corroded the pins. The sentiment seemed to be that such an effect 

 could not be charged to that material. 



Mr. Aaron asked for an appropriation for special services on the 

 part of the janitor. Carried. 



Mrs. ('. B. Aaron was elected to associate membership. 



March 28, 1889. 

 Director Dr. Horn in the chair. 



The following additions to the Library of the American Entomo- 

 logical Society were announced : 



Transactions of the American Entomological Society, vol. xvi, 

 No. 1. From the Publication Committee. 



Proceedings of the Academy of Natural Sciences, Philadelphia, 

 1888, pt. o. From the Academy. 



Proceedings of the Boston Society of Natural History, vol. xxiv, 

 sigs. 8-6. From the Society. 



Canadian Entomologist, vol. xxi. No. 3. From the Editor. 



Entomologica Americana, vol. v. No. 3. From the Editor. 



Psyche, vol. v, Nos. 154-155. From the Editors. 



Entomologist's Monthly Magazine, March, 1889. From the Con- 

 ductors. 



Insect Life, vol. i. No. 8. From U. S. Dept. of Agriculture. 



