^^^ 



ENTOMOLOGICAL NEWS 



AND- 



PROCEEDINGS OF THE ENTOMOLOGICAL SECTION, 



ACADEMY OF NATURAL SCIENCES, PHILADELPHIA. 



Vol. il . NOVEMBER, 1891. No. 9, 



CONTENTS 



Van Denburg — On the method of Spin- I Skinner— Elementary Entomology 177 



iiing the Cocoon in a certain species 



of Ichneumonidae 169 



Kunze — Terias nicippe on Long Island. 171 



Skinner — A new Pamphila. 175 



Neumoegen — On the Genus Anaea of 

 our Country 175 



Notes and News 179 



Entomological Literature 183 



Doings of Societies 187 



On the method of Spinning the Cocoon in a certain 

 species of the Ichneumonidae. See PL viii. 



By M. W. Van Denburg, A.M., M.D., Fort Edward, N. Y. 



The larva on which there was already one set of cocoons when 

 captured, belonged, apparently, to the Sphingidae, was a little 

 over two inches long, and had a crop of twenty-five or thirty 

 cocoons already scattered along its sides. It probably fed on a 

 frost grape vine, where it was captured. 



Two or three days subsequent to its capture, a fresh crop of 

 parasites were discovered pushing their way into the outside 

 world. 



When this was first observed, all the stages were in progress — 

 from boring beneath the skin to half woven cocoons. Subse- 

 quently many others appeared, and the whole stage from begin- 

 ning to end was carefully watched. 



At first the little white, semi-translucent worms could be seen 

 working their way up from the deeper layers toward the surface 

 of the opaque green of the host's tissues. When finally they 

 reached the surface, immediately beneath the outer skin, by con- 

 tinual pressure of a sharp, but soft-pointed head, and so far as 



