1920 ENTOMOLOGIIJAL SOCIETY. 113 



representing fifty-five genera. Thirty-two new species are described and one new 

 variety. The plates show various structural characters. 



Part D : Mallophaga, 13 pp., by A. W. Baker ; Axopluka, by G. F. Ferris and 

 G. H. F. Nuttall. Sixteen species are recognized in the former paper. One plate 

 illustrates four species. In the latter contribution three species are listed. 



Part E : Coleoptera, 27 pp. Forest Insects, including Ipidae, Cerambycidae 

 and Buprestidae, by J. M. Swaine ; Carabidae and Silphidae, by H. C. Fall; 

 Coccinellidae, Elateridae. C'lirysomelidae and Rhynchophora (excluding Ipidae), 

 by C. W. Leng; Dytiscidae, by J. D. Sherman, Jr. In this part sixty species are 

 determined, four of which are described as new. Three plates showing ipid beetles 

 and their work, illustrate Dr. Swaine's section. 



Part F : Hemiptera, 5 pp., by Edward P. Van Duzee. Six species are definitely 

 recognized, one of which is described as new. Generic determinations of five other 

 species are given. 



Part G : Hymexoptera and Plant Galls, 38 pp. Sawflies — Tenthredinoidea, 

 by Alex. D. MacGillivray : Parasitic Hymenoptera, Chas. T. Brues; Wasps and 

 Bees, F. W. L. Sladen; Plant Galls, F..V. Felt. In this part, records of thirty- 

 five species are included; others have been determined generically. Of the thirty- 

 five species, twenty-one, mostly sawflies, are described as new. Two plates illus- 

 trate the eighth ventral segment in the males of four species of Bomhus. 



Part H: Spiders, by J. H. Emerton; Acarixa, by X. Banks; Chilopoda, by 

 Ralph T. Chamberlin; 23 pp. Twelve species of spiders are recorded, three of 

 wliicli pre described as new. Two plates show structural characters. The Acarina 

 collected include seventeen species, all but one previously known. Only two species 

 of Chilopods were represented in the material secured by the expedition. A new 

 species of Ethpolys from Washington and Oregon States, as well as a sub-species 

 of this new species, the former from Alaska, are also described by Mr. Chamberlin. 



Part I: Lepidoptera, by Arthur Gibson, 58 pp., 6 plates. In this report is 

 also included notes on other species collected in Arctic America, not met with by 

 members of the expedition, all of which material is in the Xational Collection of 

 Insects at Ottawa. Altogether notes and records of ninety-seven species are in- 

 eluded, nine of which are described as new species. In addition, two new varieties 

 are recognized. Plate i shows genitalia of species of Oeneis ; ii, under-ides of nine 

 examples and underside of one, of species of the same genus. Plates iii, iv and v, 

 the latter two coloured, illustrate a number of the rarer and new species collected by 

 the expedition, of the genera Pieris, Erehia, Brentliis, Eiirijmm, Oeneis, etc. 



Emertox, J. H. Catalogue of the Spiders of Canada, known to the year 1919. 

 Trans. Royal Canadian Institute, Toronto, 1919. This catalogue which contains 

 the names of 3-12 species of spiders which have been found in Canada will be of 

 considerable interest and value to those persons who are collecting these creatures 

 in Canada. 



Fall, H.C. The North American Species of Coelambus. Published by John 

 D. Sherman, Jr., 1919. This pamphlet of 20 pp. includes several Canadian records. 

 Twelve new species are described, three of which are from Western Canada. 



Hart, Charles x\rthur. The Pentatomoidea of Illinois with keys to the 

 Xearctic Genera. Division of Natural History^ Survey, Vol. XIII, Article VII, 

 pp. 157-223. This contribution will undoubtedly be of value to our students of 

 Ilemiptera. Keys to families, sub-families, tribes, genera and species are given, 

 Notes and distribution records are included of each species. Five plates illustrate 

 structural differences, and one plate shows typical Pentatomoidea. 



9 E.S. 



