418 



MR. F. E. BEDDARB OX NEW 



[Apr. 23, 



Anteriorly the sac passes into the fourteenth segment near to the 

 anterior wall of that segment without any change. Arrived here it 

 ends in two diverticula of short extent. These diverticula are appa- 

 rently of much shorter extent than in any of the s^^ecies Poli/toreuitis 

 kirimaensis, P. usindjaensis, and F. sylvestris, whose spermathecal 

 apparatus is built upon the same plan as that of P. rutoenzorii. 

 Michaelsen, as a matter of fact, does not diiFerentiate, except in 

 the case of P. imndjaensis, between each diverticulum and the 

 oviduct with which it becomes continuous, which in fact opens into 

 it according to my interpretation of these various structures in the 

 genus Polytoreiihis * . In the figure annexed hereto this arrange- 

 ment is rendered plain. The sudden diminution of the ca?cum of 



Text-fie-. 122. 



o.cl. 



Spermathecal sac of Tolytoreutiis rmvenzorii. 

 d. Diverticulum of sac. o.cl. Oviducal pore. $ . Spermathecal pore. 



the spermathecal sac (text-fig. 122) where it is continuous wath the 

 oviduct is obvious. Moreover, the ovidiict is extremely long as 

 compared with that of some other species, and is much coiled. 

 Much more so is this the case with Polytoreutus riaoenzorii than 

 with either of the three species mentioned as coming nearest to it 

 in respect of the spermathecal sac and its forward diverticula. 

 But apparently these three species do agree with P. ru'wenzorii in 

 ha\'ing a much longer oviduct than in many other species of the 

 genus. There is a further point of agreement between the new 

 species described in the present paper and the three East- African 

 species with which I have compared it in the nature of the 



* P. Z. S. 1902, vol. ii. p. 206 efxeq. 



