96 The Ottawa Naturalist. [Aug. 



canadensis Newp. The largest specimen I have seen was col- 

 lected by me at Chelsea, Que., on May 30th, a few years ago at 

 a general excursion of the Club. It was crawling up the trunk 

 of a large hardwood tree and when measured it was found to be 

 5^ inches long when extended, and almost three-eighths of an 

 inch in width. The species is described by Cook in Vol. VIII., 

 p. 64, of the Harriman Alaska Expedition, the type having been 

 collected at Kirkville, Onondaga County, New York, in June, 

 1895. In the description it is stated that the "species is abundant 

 in favorable locations in central New York. It differs from the 

 more southern Arctobolus marginatus Say, in the smaller size, 

 more slender body, more uniform and darker colour and in the 

 more distinct punctations of the surface of the segments. The 

 basal joint of the gonapod is sinuate or emarginate laterad, 

 instead of evenly convex as in A. marginatus." -Julus cana- 

 densis is a much smaller species, being only about 20 to 25 

 millimeters long. The specimens of A. onondaga above men- 

 tioned were found in dampish locations in the rather thick 

 wood north of the grove at Chelsea. 



Arthur Gibson. 



BOOK NOTICE. 



A Text Book of Field Zoology Insects and their 

 near Relatives and Birds, by Lottie E. Crary, assistant Profes- 

 sor of Biology and Geology, Kansas State Normal College, 

 Emporia, with 117 illustrations: Philadelphia, P. Blakiston's 

 Son & Co., price $1.25. 



This text book of xii + 364 pages makes a splendid com- 

 panion book to Dr. Galloway's new book, a notice of which ap- 

 peared in the July number. It is much the same in general 

 make-up ; the paper used is good and the type and printing all 

 that could be desired. The book is intended primarily for 

 students who have had little previous knowledge of insects, or 

 animals of any kind. Common animals have been chosen for 

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 are excellent. The book is divided into three parts: Part I, 

 Insects; Part II, Arthropoda, exclusive of Insects and Crusta- 

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 chapters. In Part I, the different orders of insects are character- 

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 near relatives of insects myriopoda, acarina, spiders, etc. 

 Chapter xix is a key to the families of spiders. Part III on Birds 

 gives directions for field work, and much information on their 

 phvsical features, habits, food, etc. Chapters xxvi to xxx\^iji 



treat briefly of the different orders of birds. A. G. 





'^'LIBRAII 



