410 WILHELM MICHAELSEN. 



segment. They have a large pre-septal portion which is only 

 a little shorter and somewhat narrower than the post-septal 

 part. The pre-septal and post-septal portions are connected 

 together by a rather narrow neck. The duct arises from 

 the underside of the post-septal part at a small distance from 

 the neck, but as the long axis of the post-septal part mostly 

 runs transversely in the body it often appears that the duct 

 arises from the hinder end of the apparently shortened and 

 much broadened post-septal portion. 



Reproductive System. — Spermiducal funnel rath er 

 thick, not quite twice as long as broad, with a narrow collar, 

 and pierced excentrically. Sperm-duct very thin, rather 

 long and coiled iri-egularly. 



SpermathecEe with a very slender curved duct without 

 glandular appendages, and with a single bulb-shaped ampulla 

 without diverticula. The duct enters the broad pole of the 

 ampulla, and its proximal end projects somewhat into the 

 lumen of the ampulla. Proximally the ampulla narrows into 

 a moderately long prolongation, which enters the oesophagus 

 laterally in the hinder part of the fifth segment in front of 

 the septum between the fifth and sixth segments. In this, F . 

 peregrinabunda diifers from F. pulchra, where the pro- 

 longation opens in the sixth segment, in front of the septum 

 between the sixth and seventh segments. 



Remarks. — Fridericia peregrinabunda belongs to the 

 group of F. bulbosa (Rosa), and is particularly related to F. 

 pulchra Friend} It diifers from the latter species in 

 certain minor points, principally in the more complex 

 shape of the pepto-nephridia which are long and quite 

 simple and smooth tubes in F. pulchra; also in the shape 

 of the nephridia, and in the normal course of the sperma- 

 thecse which enter the oesophagus in the fifth segment, whilst 

 in F. pulchra they run backwards nearly as far as the 

 septum between the sixth and seventh segments. 



F. peregrinabunda is doubtless a peregrine species im- 

 ported by man into Africa. It seems to be rather widely dis- 

 1 Friend. H.. • Jouni. Mier. Sci.,' 1912. p. 21, text-figs. 9. 10. 



