to the Canadian Entomologist who have not already renewed their 

 subscriptions are requested to do so before the middle of the present 

 month. The thanks of the Secretary are due to the many who have 

 already complied with this request. 



~ THE MICROSCOPE^ 



The representative of what is best, most instructive and progressive in 

 American microscopy. Leading contributors for beginners and experts. 

 Send postal card for free sample copy and announcement for 1889. 



THE MICROSCOPE PUBLISHING CO., 



25 Washington Avenue, Detroit, Mich. 



FOR 50 CENTS WE WILL SEND YOU FOR ONE YEAR 



THE CONCHOLOGISTS' EXCHANGE 



The only shell paper in America ; i6 pages monthly, and full of the latest ami best 

 Shell News, and the following handsome premiums : A neat box of choice Land Sliells, 

 Fresh- Water Shells, or Marine Shells, or Berlin H. Wright's New Check Lisi of North 

 American Fresh Water Bivalves, or D. D. Baldwin's Land Shells of Hawaii. Don't 

 wait, but send 50c. now to WM. D. AVERELL, Publisher, 



Chestnut Mill, Phili., Pa. 



REV. W. J. HOLLAND, Ph. D., Pittsburgh, Pa., offers for sale or exchange a 

 limited qi;antity of JAPANESE LEPIDOPTERA and COLEOPTERA of his own 

 collecting. Has also on hand a large mass of West African and Asiatic Lepidoptera, 

 for sale or exchange. Has been authorized to receive subscriptions in tiie United States 

 and Canada for Mr. H. Pryer's magnificent work upon the Rhopalocera of Japan, to be 

 issued in three parts, 4to., profusely illustrated with colored plates, at $i a part. Part I 

 is now ready to deliver to subscribers. 3-12 



A new and revised List of the Coleoptera of America north of Mexico, by Samuel 

 Henshaw, assisted by Dr. George H. Horn. Published by the American Entomolngical 

 Society. Edition limited. Price, $1.25. Price List of Entomological papers for 

 sale, mailed on application. 



E. T. CRESSON, Treasurer. 



P. O. Box IS77, Philadelphia, Pa. 



Subscribers are invited to make liberal use of this column. Notices over three lines arc 

 liable to be shortened if necessary. All itisertions free to subscribers. 



Orthoptera Wanted. — I am especially interested in the study of the Orthoptera, 

 and wish to obtain, either by exchange or purchase, perfect specimens of these insects 

 from all parts. North American and West Indian material preferred. Persons 

 having specimens for sale or exchange will please correspond with me. Lawrence 

 Bruner, West Pointy Cuming Co. , Nebraska, U. S. A. 



Wanted to Purchase or Exchange — Good fresh specimens of Canadian 

 Diurnal Lepidoptera, especially from west and north. H. J. Elwer, Preston, Ciren» 

 cester, Eng. 



