422 



MR. F. E. BEDDARD OX NEW 



[Apr. 23, 



microscopically this pai't of the reproductive apj^aratus in gly- 

 cerine after removal from the body, I noted in addition to the 

 receptaculum, called by Michaelsen the " Eitrichterblase," a sphe- 

 rical chamber which obviously corresponds to what Michaelsen 

 calls the " Ovarialblase," and which is believed by him to contain 

 the ovaiy. In Polytoreutus ccerideus * this Ovarialblase forms the 

 end of the biunch of the spermathecal sac into which it opens on 

 the one hand, and is connected on the other with a narrow tube 

 communicating with the Eitrichterblase, which is, I think, part 

 of the funnel of the oviduct pulled out by the retreating sperma- 

 thecal sac. I cannot be certain that the spherical chamber in 

 Polytoretitus granti has the same connections, but I cannot help 

 regarding it as the homologous structure. I have not represented 

 it in the figure (text-fig. 124). Now this appears to be wanting 

 in Polytoreutus ruivenzorii altogether, as it is, for example, in 

 Polytoreutus iDcigilensis. Where it does occur it appears to 

 mark the boundary between the oviduct and the spermathecal 

 sac ; if so, then the present species has, as I have already sug- 

 gested, a very long diverticulum to the spermathecal sac and a 

 short oviduct t. 



Text-fio-. 124. 



od. 



Spennatliecal sac of Polytoreutus ffi'anti. 

 Letteriiiff as in text-lig. 122. 



Polytoreutus granti differs from its ally P. rutoenzorii in 

 possessing, like P. kirimaensis and P. sylvestris, considerable 

 appendages to the spermathecal sac posteriorly. These measured 

 in my example 6 mm., and Avere therefore just a trifle shorter 

 than the spermiducal glands, which measure 7 mm. in length. The 

 proportions, in fact, are not very different from those of P. syl- 

 vestris ; but in the present species the length of both structures 



* Michaelsen, JB. Hamb. wiss. Anst. ix. Taf. iv. fig. 30. 



t Beddavd, Quart. Journ. Micr. Sci. n. s. vol. xxxiv. pi. xxv. fig. 7. 



