CONTENTS 
{All rights reserved) 
Nuttall, Geoege H. F. Observations on British Rat-Fleas. 
July—October, 1911 . 
Steickland, C. and Meeeiman, G. I. Report on Rat-Fleas in 
Suffolk and North Essex. (With 3 Charts) 
Nuttall, Geoege H. F. and Steickland, C. II. Report on 
Rat-Fleas in Cambridgeshire ...... 
Robinson, L. E. and Davidson, J. The Anatomy of Argas 
persicus (Oken 1818.) Part I. (With Plates I to VI 
and 2 Text-figures) ........ 
Nuttall, Geoege H. F. Note on Colouration in Ticks. 
(With Plate VII). 
Balfoue, Andeew. a Sarcocyst of a Gazelle (G. rufifrons) 
showing Differentiation of Spores by Vital Staining. (With 
Plates VIII and IX). 
CocKiN, R. P. Ankylostomiasis in Grenada .... 
Nuttall, Geoege H. F. Observations on the Biology of 
Ixodidae. Part I. Dealing with : 1. Ixodes putus (Pickard- 
Cambridge, 1876) Neumann, 1899. 2. Ixodes canisuga 
Johnston, 1849. 3. Ixodes hexagonus Leach, 1815. 4. Ixodes 
ricinus (Linnaeus, 1758) Latreille, 1804. 5. Haemaphysalis 
leachi (Audouiu, 1827) Neumann, 1897. 6. Haemaphysalis 
punctata Canestrini and Fanzago, 1877. 7. Hyalomma 
aegyptium (Linnaeus, 1758) Kocb, 1844. 8. Rhipicephalus 
appendicidatus Neumann, 1901. (With 2 Text-figures) 
Publications Received. 
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