160 THE CANADIAN ENTOMOLOGIST. 



colour; the producers are of the Diplosis type, and very similar to 

 the producers of a similar gall on branches of flowering panicle of 

 Aster diplopappus. The following is one of the nine annual entries 

 in my note book: "April 9, 1S93, collected in Greenwood and Casci 

 ravines, East of Toronto, a lot of over 50 galls from flowering branches 

 of Aster puniceus. Galls spindle-form, 5 x15 mm.. diameter below gall 

 3 mm ; another smaller lot measured 4x8 mm., diameter of branch 

 below gall 2' ', mm. From May 30 to June 5, 1893, Diplosis producers 

 emerged. From June 1 to June 11, 1S93, two species of parasites 

 emerged. 



"June 1 1, 1S93, specimens of gall producers and parasites mailed to 

 Dr. Riley. 



"July 29, 1S93, note from Dr. Riley : ' Unknown to me." 

 I have found this gall common in Whitchurch, Owen Sound, Fitz- 

 william Island, North Bruce, Grimsby, and no doubt they ate more or less 

 common wherever this stately host Aster is found. 



[NDEX OF ORTHOPTERA. 



The undersigned has undertaken the task of fully indexing the litera- 

 ture of the Orthoptera of the World subsequent to the year 1900. Tlie 

 task is not a light one, but will, it is hoped, ultimately prove well worth 

 the labour involved. Publication is not contemplated for many years, but 

 in the meantime the index should be of much use in various ways. By 

 the constant use of guide cards indicating reductions to synonymy, or the 

 resurrection therefrom, and the transfer of species from one genus to 

 another, it is hoped to make this more than a mere list of names. 



In conjunction with the above undertaking, an exhaustive bibliography 

 has been attempted, and geographical and systematic indexes are kept, 

 listing articles treating of the fauna of different places, and citing tables 

 and important discussions of genera and higher groups. 



To facilitate the above work, the writer earnestly requests separates of 

 articles from authors writing on the Orthoptera. The importance of this 

 request is considerable, and its maker hopes that it will be favourably 

 considered by all Orthopterists. The writer will be glad to exchange 

 separates so far as possible, and will be ready at all times to transmit 

 facts and data from the index to any one desiring such information. The 

 index is now complete to date so far as it has been possible to secure the 

 literature. — A. N. Caudell, U. S. National Museum, Washington, D. C. 



