•THE CANADIAN ENTOMOLOGIST 333 



be given to the economic aspect. Three cover much the same 

 ground, all finding favour on the editor's table, for the independent 

 illustrations glorify all of them: — -Manual of Fruit Insects, Slinger- 

 land and Crosby, of Cornell; Insect Pests of Farm, Garden and 

 Orchard, by D. Sanderson; and Agricultural Entomology by 

 Herbert Osborn, of the University of Ohio. The New York 

 State Museum issued" two quarto volumes on Insects Affecting 

 Park and Woodland Trees, by E. P. Felt, State P2ntomologist, 

 with a wonderful wealth of illustration chiefly of beetles, by L. J. 

 Joutel, but this monumental work may be now a little hard to 

 procure. 



Next on the shelf of working library comes works on particular 

 groups. Most of these are somewhat expensive, for colour plates 

 cost much to publish. Wright's Butterflies of the Pacific Coast 

 is the best and most complete for its territory. The American 

 Museum of Natural History booklet, Our Common Butterflies, 

 is perfectK- workable and costs only fifteen cents. The standard 

 work on Butterflies of North America is by W. J. Holland. Its 

 colour plates will serve for identification of species, except in the 

 "skippers" and some of the more obscurely marked Nymphalidse. 

 The collector ot Hesperiidaj must consult some specialist in the 

 family or leading Museum to be sure of correctness. 



The Moth Book, by \\ . J. Holland, is equally well illustiated 

 and serves for final identification of all large or showy forms. 

 The "millers" are represented by about half the number of dis- 

 tinctly known species (the whole being too voluminous) and from 

 the book a perfectly good general knowledge can be gained. For 

 exact identification, however, one must look farther. There are 

 whole groups of Noctuid moths, scientific knowledge of which is 

 still woefulh" incomplete. No good book exists on the thousands 

 of species of the Microlepidoptera, of which probably one-half are 

 not yet knov>n to Science. A syno.iymical catalogue of all known 

 American Lepidoptera was prepared by H. G. Dyar and stall 

 of specialists, known as Bulletin 7y2 of the U. S. National Museum, 

 but this wonderful work was treated as are most of the Govern- 

 ment publications, sent to an army of legislators who cared 

 nothing for them, and within a few months "out of print" 



