379] 



PSF.UDOPHYLLIDEA FROM FISHES— COOPER 



91 



This species has been so well described by Linton (1890:746), Ariola (1896a) 

 and Liihe (i899a, 1900a) that little need be added. The writer would like 

 to point out, however, that as regards a few details the material studied did 

 not agree with the descriptions given by these writers. 



After referring to the fact that the testes are not arranged in two lateral 

 fields but form a continuous dorsal layer and the further fact that, contrary 

 to Ariola's statement, they are to be found evidently functioning in gravid 

 segments, Llihe (1899a:709) stated that "Ihre Anzahl ('pochi' nach Ariola, 

 'zahlreich' nach Loennberg) betragt ca. 50 pro Proglottis." In the sections 

 made they were found to be about 200 in number for each proglottis, and sepa- 

 rated from those of the segments ahead and behind by aggregations of trans- 

 A-erse and sagittal muscles which are, however, so narrow as to give the closely 



