OPHIDIAN TAPEWORMS. ^'"^ 



shell-land or at any rate its inconspicuous size if P^f ^f ' '" ^^ 

 St accounted for/as it app^rs to -' ^^ ^f^^^^" 



^--^ -tt fd uif ortLi^i^rTde^of trtd;: wiiTii 



Z^b^ordetli^elel^^^^^^^^^^^^ cortical and -d^^^X^X 

 It extends to near to the lateral boundary f J;l^\^/^^;f ^^ 

 layer. The vitelline glands show no peculiarities, and are as 



usual lateral. . ^^oTnaY-tahlp When 



The uterics, however, is m some ways i«'^«;^fa'^f^ ™ 

 immature it is a solid rod running throughout the body 

 S s soon excavated, and even in ripe segments P-^ ^f ^1 « 

 xitPrus are still simply a narrow tube, while elsewhere it is 

 nJSd «nd fu I of e/-s. In the most fully mature segments 

 wHch I have stn th^^^^^^^ -ms to fill the greater part of the 



"tW arnfvLy maiLd lateral diverticula of the uterus such 

 a. occur in otler Ipecies of Ichthyot<.nia, and which are so veiT 

 markedly differentiated from the median stem m my genus 

 S;Sii«. But there are here and ^-e <.f gxowtl^^^^^^^^ 

 side which are shown in transverse sections of a npe prog ottia 

 byatrabecula dividing the cavity of the "*--• ^he -^ .« f_ 

 the uterus where it is narrow, and as a rule though not imaii 

 :"tW any eggs, are thick and ^^ ^^l^^:iJ^,:Z:Z 

 These walls are darkly staining and granular and seem to consist 



of a glandular epithelium which ^-^ P-^^^^.trweVc^^^^ 

 of the ess But it must be remarked that this layer ot tissue 

 Lnotlike^the numerous stalked glandular cells which form the 

 cells of the diverticula of the uterus in OphicloUema na^ce /The 

 cells oi tn« uiv nresents the appearance which is 



drawing (text-fig. 34, p. {f/) P^^^f J' '^^^^^ '^Vhere the uterus 



L^appearanc: may be L simply to the ^t-tching of t^^^^^^^ 

 walls and not due to any diff-erence of real structu e When l^ 



uterus is widened out it occupies ^^^^^.^^^^^^ %°Vmedulkrrand 

 in close contact with the boundary-lme of the medullaiy ana 



^^S::trw::XaWrthe case: in some paxts of the 

 J^^r^l^^ the utp eLnds ^^^J^^ : ^^ 



