ox A NEW HUMAN TAPE- WORM (BOTHRIOCEPHALUS SP.). 3|^3 



Although yolk-granules were often found in its lumen, we could never 

 make out its connection with the vitellarium. Nor could we ever 

 recognize the shell -glands. Nevertheless there can be no doubt that 

 the present species essentially agrees in these as in so uuiny other 

 points with BotJu-ioccjiltdliis lalus. 



The uterus {ut., figs. 10 and 12), as seen in sample No. 2, occupies 

 for the most part the dorsal I'egion of the Mittehcliiclit. Its anterior 

 portion descends ventrally, almost in a straight line to <3pen at the 

 uterine pore situated at about the middle of the length of the [)r()- 

 glottis (^ut. 0., fig. 12). The rest of the uterus, notwithstnnding some 

 irregularity in its course, describes in general two loops on each side. 

 The distance between the ends of two (opposite loops measures only 

 about h-alf a millimeter. No eggs are yet found and the uterine lumen 

 is for the greater part obsolete. 



In sam[)le No. 3, the production of eggs is considerably advanced. 

 They fill the uterus and distend the latter into a wide tulje, but not 

 by far to such a great extent as in sample No. 4. The latter, when 

 viewed by holding it against the light, shows the uteri of successive 

 proglottides as blackish spots, about 1 mm. or slightly more in 

 breadth and ai-ranged in two longitudinal series. In each series 

 some may lie somewhat to the rio-ht or left of the ü'eneral line. When 

 compressed and clarified, they are certainly very distinctly visible. 

 In such preparations they present varial)le forms but the most general 

 and the least disturbed condition is that figui-ed in tig. 7. Each 

 uterus appears as consisting of two pairs of loloes, corresponding t<) the 

 Coin- loops of the uterine tube in .•sample No. 2. The anterior pair is 

 the shorter of the two and clasps the posterior side oi' the cirrus. The 

 numerous iiggs contained in the uterus, or more properly their shells, 

 give colour to the uterine loljes which varies from the colourless 

 transparency of the portion nearest the oviduct into the dark brown of 



