CONTENTS 
No. 1 (April). 
Nuttall, George H. F. Observations on Britisli Tlat-Fleas. 
July—October, 1911. 
Strickland, C. and Merriman, G. I. Report on Rat-Fleas in 
Suffolk and North Essex. (With 3 Charts) . . . . 
Nuttall, George H. F. and Strickland, C. IT. Report on 
Rat-Fleas in Cambridgesliire ....... 
Robinson, L. E. and Davidson, J. The Anatomy of Argaft persicus 
(Oken 1818). Part I. (With Plates I to VI and 2 Text-figures) 
Nuttall, George H. F. Note on Colouration in Ticks. (With 
Plate VII). 
Balfour, Andrew. A Sarcocyst of a Gazelle {G. rufifrons) showing 
Differentiation of Spores by Vital Staining. (With Plates VIII 
and TX) ........... 
CocKiN, R. P. Ankylostomiasis in Grenada . . . . . 
Nuttall, George H. F. Observations on the Biology of Ixodidac. 
Part I. Dealing with : 1. Ixodes putus (Pickard-Cambridge, 
1876) Neumann, 1899. 2. Ixodes canisuya Johnston, 1849. 
3. Ixodes hexagonus Leach, 1815. 4. Ixodes ricinus (Linnaeus, 
1758) Latreille, 1804. 5. Ilaernaphysalis leaclil (Audouin, 1827) 
Neumann, 1897. 6. Haema,physails punctata Canestrini and 
Fanzago, 1877. 7. Hycdomma aegypthvm (Linnaeus, 1758) Koch, 
1844. 8. Rliipicephalus appendiculatus Neumann, 1901. (With 
2 Text-figures) .......... 
Publications received.. 
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