4r)S 



Mv. II. A. r>ayli.s <)/( a 



form ; I may mention, (or example, tliosc of Sfii/ilinaiui'ia *, 

 of Polijtori'iitus kent/acfisi.t and magilcnsis f, P/wre/ima ;]:, 

 and more espeeially Pomiulii/i/s ^. 



The spcrmatheca (rigs. 3 & l) of D. jaculatrix eonsists, as 

 is nsnally the case, of a thick-walled muscular duct [D.), a 

 middle chamber (7) with walls of medium thickness, and 

 a iarfjc blind terminal chamber (2) with comparatively thin 

 and little-fohled walls. The walls of tl e juiddle cluunher 

 arc thrown into numerous deep folds and pockets, and the 

 whole organ, including the terminal [)oueli and the duct 



I'i- 



Dic/ioffnsfer jaculatri.v. Portions of the epithelium from the insi<h> oC 

 the ^permatheea : a, from the terminal sac : l>, trom tlie michlie 

 chamber. (Cam., oil-imm. -r-v", oc. 2 Zeiss.) 



itself, is lined with an epithelium consisting of tall goblet- 

 shaped glandulai" cells, which appear to have been in a 

 state of somewhat active seci'ction. 



There are certain dificrcnces in the form of these cells 

 in ditl'erent parts of the organ, probably corresponding to 

 differences in function The cells lining the terminal 

 chamber (fig. 5, a) are tall, but not very narrow, and each has 

 a long goblet-like cavity filled with granular secreted matter. 

 The actual distal end of the cell appears to be ca[)ped by a 

 thick membrane pierced with perforation?. The large nucleus 



* See lieddard, P. Z. S. PJOi, i. p. 344, and text-fig. 80. 



t Id. P. Z. S. P.J02, ii. p. 200, and text-fijrs. r)2-.54. 



X Id. P. Z. S. PJll, p. 412. § Id. P. Z. S. 1903, i. p. 210. 



I 



