CONTENTS 
No. 1 (November, 1917) 
PAGE 
Nuttall, G. H. F. Bibliography of Pediculus and Phthirus, including 
Zoological and Medical Publications dealing with Human Lice, 
their Anatomy, Biology, Relation to Disease, etc., and Prophy¬ 
lactic Measures directed against them ...... 1 
Nuttall, G. H. F. The Part played by Pediculus humanus in the 
Causation of Disease. (With Plate I) ..... 43 
Nuttall, G. H. F. The Biology of Pediculus humanus. (With Plates 
II and III and 12 Text-figures) ...... 80 
Howlett. F. M. Notes on Head- and Body-Lice and upon Temperature 
Reactions of Lice and Mosquitoes.186 
No. 2 (January, 1918) 
Stewart, F. Id. On the Development of Ascaris lumbricoides and 
A. mystax in the Mouse. (With Plate IV) . . . .189 
Stewart, F. H. On the Life History of Ascaris lumbricoides L . . 197 
Walton, Chas. L. Some Results of a Survey of the Agricultural 
Zoology of the Aberystwyth Area ...... 206 
Walton, Chas. L. Liver Rot of Sheep, and Bionomics of Limnaea trun- 
catula in the Aberystwyth Area. (With 5 Text-figures) . . 232 
Weidman, Fred D. A Contribution to the Anatomy and Embryology 
of Cladorchis (Stichorchis ) subtriquetrus Rudolphi, 1814 (Fischoeder, 
1901). (With Plate V and 2 Text-figures) ..... 267 
Bacot, A. A Note on the period during which the Eggs of Stegomyia 
fasciata ( Aed.es calopus) from Sierra Leone Stock retain their 
vitality in a Humid Temperature 
280 
