CONTENTS OF No. 257.—New Series. 
MEMOIRS: 
PAGE 
The Structure of certain Chromosomes and the Mechanism of their 
Division. By ARTHUR BoLLEes LEE, Hon. F.R.M.S. (With 
Plates 1-2) : : : 2 d A : - : ; : 1 
On the Pharyngeal or Salivary Gland of the Earthworm, By D. 
KeEILin, Sc.D., Beit Memorial Research Fellow. From the Quick 
Laboratory, University of ee (With Plate 3 and 7 'Text- 
figures) . ‘ : : ; ; ; , . 32a 
Some Observations on Caudal Autotemy and Regeneration in the 
Gecko (Hemidactylus flaviviridis, Riippel), with Notes 
on the Tails of Sphenodon and Pygopus. By W.N. F. WoopLanpD, 
D.Sc. (Lond.), Indian Educational Service, Senior Professor of 
Zoology, Muir Central College, Allahabad, India. (With 6 Text- 
figures) . =: ‘wile - aes Stat, : ‘ . 63 
On the Bionomics and Development of Lygocerus testacei- 
manus, Kieffer, and Lygocerus cameroni, Kieffer, 
(Proctotrypoidea- Ceraphronidae) parasites of Aphidius 
(Braconidae). By Maup D. Havinanp, Fellow of Newnham 
College. (With 18 Text-figures) . ; : : ; : sy eho 
On the Terrestrial Planarians from the Islands of Mauritius and 
Rodrigues; with a Note upon the Canal connecting the Female 
Genital Organ with the Intestine. By Tox1o KaBuRAKI, Zoo- 
logical Laboratory, The Museums, Cambridge. (With Plate 4 and 
6 Text-figures) . : s : : ; 5 ‘ ; : ~ hee 
Gonospora minchinil, n.sp., a Gregarine inhabiting the egg 
of Arenicola. By Epwin 8. Goopricu, F.R.S., and H. L. M. 
PIXELL GoopRIcH, D.Sc. (With Plates 5-6) 5 . : «- Low 
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