[HEWITT] CANADIAN TICKS 239 



Hooker, W. A., Bishopp, F. C, and Wood, H. P. The Life-History and Bionomics 



of some North American Ticks, U. S. Dept. Agric, Bur. Ent., Bull. No. 106, 



239 pp., 17 figs., 15 pis., 1912. 

 Hunier, W. D., and Bishopp, F. C. The Rocky Mountain Spotted Fever Tick, 



with special reference to the problem of its control in the Bitter Root Valley 



in Montana. U. S. Dept. Agric, Bur. Ent., Bull. No. 105, 47 pp., 3 pis., 3 figs 



1911. 

 Nuttall, G. H. F. "Tick Paralysis" in Man and Animals. Further published 



records with comments. Parasitology, Vol. 7, No. 1, pp. 95-104, May, 1914. 

 Nuttall, G. H. F. Observations on the Biology of Ixodidae, Part II. Parasitology, 



Vol. 7, No. 4, pp. 408-456, March, 1915. 

 Nuttall, G. H. F. and Warburton, C. Ticks. A monograph of the Ixodidae. Part I. 



Argasidae. pp. 1-104, 144 figs., pis. I-III. 1908. Part II. Ixodidae. pp. 105- 



348, figs. 115-307. Pis. IV-VII. 1911. 

 Todd, J. L. Tick Bite in British Columbia. Canadian Medical Assn. Journ., 



Dec, 1912. (Reprint, 2 pp.) 

 Todd, J. L. Tick Paralysis. Journ. Parasitology, vol. 1, pp. 55-64, Dec. 1914. 



Illustrations. 

 Map showing the Distribution of the Rocky Mountain Spotted Fever Tick 

 Dermacentor venustus in western Canada as recorded up to May, 1915. 



Plate I. 

 Ornithoderos megnini. Dorsal aspect. 

 Ixodes ricinus. Engorged female; dorsal aspect. 

 Haemaphysalis cinnabarina. Engorged female; dorsal aspecft. 

 H. cinnabarina. Engorged female still attached. 



Plate II. 

 Dermacentor albipictus. Engorged female; dorsal aspect. 

 D. albipictus. Male; dorsal aspect. 

 Dermacentor venustus. Engorged female; dorsal aspect. 

 D. venustus. Engorged female; ventral aspect. 



Plate III. 

 Dermacentor venustus. Unengorged female; dorsal aspect. 

 D. venustus. Unengorged female; ventral aspect. 

 D. venustus. Male; dorsal aspect. 

 D. venustus. Male; ventral aspect. 



