Im IBE ADVANCEMENT OF SCIENCE 



PSYCHE. 



ORGAN OF THE CAMBRIDGE ENTOMOLOGICAL CLUB • 



EDITED BY GEORGE DULMOCK AXD B. PICK.MAX JIAXX. 



Vol. IL] Cambridge, Mass., Jan. and Feb., 1877. [Nos. 38-34. 



Introduction to the Second Volume. 



Psyche enters upon its second volume having twice the size 

 with which it began in May, 1874. The Bibliographical 

 Record steadily improved in completeness and convenience of 

 use as the editor gained experience. Carefully prepared sys- 

 tematic and alphabetic indexes placed the contents of the first 

 volume within easy reach of everybody. 



The continuance of the Bibliographical Record requires 

 as much time and labor as Mr. Mann can devote to the work. 

 Mr. Dimmock takes charge of the rest of Psyche. 



Psyche is devoted principally, aside from the Bibliograph- 

 ical Record, to articles upon the habits, general anatomy and 

 physiology of Arthropoda, and communications upon these sub- 

 jects are solicited from competent observers. Sjmoptical tables 

 for the determination of Xorth American Insects^ will be given 

 occasionally. Descriptions of new species will be given only 

 Avhen they are needed to supplement other articles. 



The Bibliographical Record will contaia, as heretofore, a 

 descriptive list of all writings upon Entomology pubHshed in 

 North America, and of all foreign writings upon North Amer- 

 ican Entomology, It will include a selection from foreign writ- 

 ings upon general Entomology which are of importance to 

 North American entomologists. 



The Cambridge Entomological Club was incorporated 

 March 9, 1877, under the laws of the Commonwealth of Mas- 

 sachusetts. Its members are chosen without local limitation; its 

 field of action is wherever Entomology is scientifically pursued. 



'■ See Vol. I, p. 162-163. 



