On Amphilina paragonopora, sp. n., 



and a hitherto undescribed Phase in the 



Life-History of the Genus. 



By 

 W. N. F. Woodland, D.Sc. (London), 



Wellcome Bureau of Scientific Research/ 25-7 Endsleigh Gardens, 

 Gordon Square, Euston Road, London, N.W. 1. 



With Plates 3-5. 



Contents. 



PAGE 



Part I. The Structure and Bionomics of Amphilina para 



G o N o p o R A , sp. n. . . . . . . . 48 



(n) Habitat and External Characters ..... 49 



(b) The Reproductive System ...... 53 



(c) The Proboscis : its Musculature and Connexions . . 58 

 {d) The Excretory System ....... 65 



(e) The Central Nervous System ...... 67 



(/) The Histology of the Body-wall, and the Body Musculature . 68 



{g) Some Stages in the Development of the Larva ... 68 

 (h) Re -definition of the Genus Amphilina, and the chief Distinc- 

 tions between the five Species . . . . .71 



Part II. On the Irregular-form Stage of Development in the 



Life-cycle OF A. paragonopora . . . 74 



Notes on Technique ........ 78 



Summary of Principal Conclusions in Parts I and II . .78 

 Literature References ........ 80 



^ A large portion of the work involved in this inquiry was done in 

 India, during my tenure of the Chair of Zoology at the Muir C'entral 

 College, Allahabad, U.P. (Indian Educational Service). 



