THE CANADIAN ENTOMOLOGIST. 171 



continued with their wonted earnestness. Through the success attained 

 by him in carrying a large number of species of butterflies from the egg 

 through their transformations, he has secured their entire life-histories, 

 several of which have been published during the past year, and others 

 illustrated in the volume of the Butterflies of North America. Of the 

 Satyridse, the larvse of which are so rarely met with that I may venture to 

 say many members of this Club have not seen a living example, he has 

 reared all of our Eastern species with the two exceptions of Satyrus 

 Pegale and Chionobas semidea. The interesting experiments in producing 

 change in the imago by the application of cold to the chrysalis have been 

 continued and been duly recorded. 



A large number of biological papers have been contributed to our 

 Entomological journals. From those accessible to me at the time of 

 writing I find contributions from the following : C. J. S. Bethune, J. Boll, 

 Robert Bunker, V. T. Chambers, A. J. Cook, Charles Dury, H. Edwards, 

 W. H. Edwards, J. H. Emerton, G. H. French, H. A. Hagen, E. C. Howe, 

 D. S. Kellicott, J. L. LeConte, B. P. Mann, T. L. Mead, C. V. Riley, W. 

 Saunders, C. G. Siewers, Emma A. Smith, F. H. Snow, C. E. Webster, O. 

 S. Westcott, C. E. Worthington, and G. D. Zimmerman — a quite incom- 

 plete list of the contributors to this department. 



Results of anatomical studies of insects have been published by 

 Messrs. C. F. Gissler, J. D. Hyatt, E. L. Mark, and C. V. Riley. 



It would be inexcusable in a notice of biological work to omit refer- 

 ence to what is being done in this direction at the Museum of Comparative 

 Zoology at Cambridge. Under the hand of the eminent Curator of the 

 Entomological Department, Dr. H. A. Hagen, a biological collection of 

 insects has been brought together that is far in advance of any similar 

 collection in the world. It was my privilege recently to give it a partial 

 examination, and when I say that I know not how to express my high estim- 

 ation of it, I give it but imperfect praise. No one, whose studies have 

 prepared him for the appreciation of such a collection, can examine it 

 without wondering when, where and how the material was obtained. As 

 an illustration of the natural history of species, in their several stages, 

 architecture, depredations, food-plants, diseases, parasites, etc., it is diffi- 

 cult to see how its plan of arrangement can be improved. In consideration 

 of its high value, it is very gratifying to see that such unusual means have 

 been resorted to for its preservation, as, with a reasonable supervision and 

 without the operation of other than the ordinary causes of destruction, 



