590 



Transactions of the Society. 



about equal in length, and slightly curved at the inner extremity. 

 Nephridia with small anteseptal, and large postseptal, from the 

 posterior of which the duct arises. In some cases the duct is only 

 a short, stout continuation of the postseptal. Spermathecse with 

 large ampulla, duct of about the same length, and glands at the 

 opening (fig. 113). Sperm funnel (fig. 114) about twice as long as 

 broad, with a narrow collar and very long duct arranged in regular 

 order, resembling a coil of vermicelli, recalling Michaelsen's remark 

 anent H. dicksoni : " Samentrichter klein, doppelt so lang wie 



In^. 



Int. 



Jhre ^ 



Amp. 



Por& % 



Fig. 112. — Development of spermatheca in 

 Henlea fragilis Friend. 



dick ; Samenleiter lang, regelmassig zusammengelegt." There are 

 other points of affinity with H. dicksoni, but the differences are 

 greater than the resemblances. The chloragogen cells begin in the 

 6th segment. The coelomic corpuscles, which are often attached 

 to the body wall, and are of a dirty brown colour, are spindle- 

 shaped, resembling those of H. curiosa, but quite unlike those of 

 K. heterotropa. Glands of the girdle very small and indistinct, 

 with large glandular atrium within the pore. The brain is con- 



