1917 ENTOMOLOGICAL SOCIETY. 139 



253, pp. 193-264, 9 plates, issued Oct. 14, 191G. This bulletin will undoubtedly 

 prove of much value lo Canadian dipterists, particularly those residing in the 

 eastern provinces. Not only are descriptions of the more important or interesting 

 Maine species given, but artificial keys to the larva? and pupae of the syrphidae 

 are also presented. Interesting chapters on the habits, structure and economic 

 importance of the larva^, etc., arc included. The plate's illustrate the life-stages 

 of ten different species. 



MosHER, Edna. A classification of the Lepidoptera based on characters of 

 the pupa: Bull of the 111. State Lab. of Nat. History, Vol. XII, Article II, March, 

 1916, pp. 17-159, plates XJX to XXVII. In 1895, Packard published a paper 

 entitled " Attempt at a New Classification of the Lepidoptera," based upon pupal 

 characters. The determinations of the homology .of the various parts of the 

 pupffi were, it is stated by the above author, far from correct, and this, of course, 

 invalidated many of his conclusions. Since Packard's paper, nothing has appeared 

 in America towards such a classification until Dr. Mosher's contribution. Fol- 

 lowing the introduction are chapters on " Changes Preceding Pupation," and 

 " External IMorphology," under which ia discussed in detail the head, the thorax 

 and the abdomen. In the *'• classification "' keys to many of the families are given, 

 and plates XIX to XXVll illustrate valuable characters. The memoir is, indeed, 

 an important one, and the author is to be congratulated on the completion of so 

 useful a study. 



Neediiam, James G. and Lloyd, J. T. The Life of Inland Waters, an 

 elementary text hook of fresh-water biology for American students : The Comstock 

 Publishing Co., Ithaca, N.Y., 1916; 438 pages, 244 text figures; price $3.00. Thi< 

 book is divided into seven chapters: I, Introduction; II, The Nature of Aquatic 

 Environment; III, Types of Aquatic Environment; IV, Aquatic Organisms; V. 

 Adjustment to Conditions of Aquatic Life; VI, Aquatic Societies; VII, Inland 

 Water Culture. Chapters l\, V and VI, contains much entomological matter. 



OsBORX, Heebert. Agricultural Entomology, for students, farmers, fruit- 

 growers and gardeners: Lea & Febiger, Philadelphia and New York, 1916; 347 

 pages, 253 text figures, 1 colored plate. This book, the author states, has been 

 designed to meet the needs of students and others who wish to learn something 

 of insect life, especially in relation to farm crops and live stock. It will un- 

 doubtedly prove a useful work of reference. 



OsBOEN, Herbert and Drake, Carl J. The Tingitoidea of Ohio: Ohio 

 State University Bulletin, Vol. XX, No. 35, pp. 217-231. This study of these 

 insects of Ohio commonly known as " lace-bugs '' will be of interest to Canadian 

 students. Ten new species are described. Nine figures occur in the text in 

 addition to which there are two plates. 



, Van Duzee, Edward P. Check List of the Ilemiptera (excepting the 

 Aphididse, Aleurodida} and Coccidae of America, north of Mexico, p. Ill: New 

 York Entomological Society, 1916. The appearance of this long-looked for check 

 list was, I feel sure, welcomed by entomologists generally. In the preface the 

 author states that "the present Check List has been drawn off from a complete 

 bibliographical and synonymical catalogue of the Ilemiptera of America North of 

 ^Mexico, which was completed last winter, and later will be published by the Uni- 

 versity of California Press. Except for the references to the literature of the sub- 

 jects, this Check List gives most of the information in the large catalogue and 

 includes the systematic arrangements, full synonymy, the date of each name, and 

 roughly the distribution of each species." Copies of the Check List may be obtained 



