152 



Transactions of the Society. 



Negative Characters. — In studying this species it soon becomes 

 apparent that certain familiar characteristics of many Annelids are 

 wanting. If one is examining the adult worm, whether living or 

 preserved, it is impossible to detect the presence of dorsal pores. 

 The same is true when sections are carefully scrutinized. As I 

 found other aliens in Oxford which possessed such pores, this first 



•'''P^ :>ptk^m 

 Fig. 3. 



YH 



point of difference proved very arresting. There were, fiu-ther, no 

 signs of specialized set?e, such as are frequently found in foreign 

 Oligochsets. 



Coming to the internal structure, we find the following note- 

 worthy negative characters : — 



There are no diverticula to the spermathecas ; these are not 



oes. 



oes.gl 



o€S.gl. 



attached to the intestine, nor do glands exist at the opening. The 

 worm is devoid of peptonephridia (salivary glands), and it has no 

 coelomic corpuscles or chloragogen cells. There is no tongue or 

 taste organ, nor do prostrate papillae present themselves in any 



noticeable fashion on segments IV and 19. 



Calciferous glands are 



