On the Development of Peripatus Novae- 

 Zealandiae. 



By 



liilian Sbeldon, 



Bathurst Student, Newnham College, Cambridge. 



PART I. 



With Plates XXII, XXIII, XXIV, XXV and XXVI. 



The account to be given in this paper is unfortunately by 

 no means a complete one^ owing to the difficulties attendant on 

 working at the subject in this country. The great drawback 

 is the difficulty of obtaining the creatures, and as, so far as I 

 know, there is no way of keeping them alive in England, it is 

 necessary to kill them and remove the embryos as soon as they 

 arrive, so that one is by no means certain of obtaining the stages 

 which are required, when one does have the good fortune to 

 obtain a supply of the creatures. 



All the embryos which I have worked upon were given to 

 me by Mr. Sedgwick, and most of them were taken out of the 

 uterus and preserved by him before he handed the material 

 over to me. So far we are not able to state at what times of 

 the year the different events in the development take place, 

 but it is possible nevertheless that there may be a definite 

 sequence, as we have at present only received the material in 

 December, July, and April, and so have not many data to go 

 upon. 



The material which arrived in July contained seven females; 

 three of these were without embryos in the oviduct or uterus, 

 and the other four contained embryos varying in age from that 



