148 



gonads are weakly developed, but distinctly branched. The alimentary 

 canal is divided into three parts, but they are not so distinctly 

 différent as in kefersteinii. The intestine has a loop and on the 

 mesenteries there are ciliated funnels of the usual size and shape. 



The calcareous deposits are, as in kefersteinii, different in the 

 two ends of the body. In the anterior end the articular ends of 

 the plates are usually more or less malformed (Fig. 14. 11-13). 

 Also the anchors may be of a rather unusual shape, but while 

 the abnormal shape of the anchor-plates is typical of the species, 

 that of the anchors is rather rare. Also in the posterior end 

 of the specimens malformations are found, but here it is usually 

 anchors and corresponding plates which are doubled in the articular 

 end. In some specimens such malformations are so common that 

 one might suppose them to be typical of the species, but as they 

 are quite or nearly quite wanting in other specimens, they are 

 scarcely of any clasificatory value. 



The anchors of oculata differ from those of all the other species, 

 especially kefersteinii and galatheae, in the flukes being unusually 

 short and thick and having typically few, 1 — 3, minute knobs on 

 the vertex. The anchors from the anterior end of body (Fig. 13. 11) 

 measure ca. 260 // in length by ca. 130 jti in width, those from 

 the posterior end (Fig. 13. 12) ca. 280 (ju in length by ca. 130 fi 

 in width. The anchor-plates from the anterior end (Fig. 14. 9) 

 measure ca. 190 fi length by ca. 140 fi in width. The articular 

 hole is usually smooth and the bridge is serrate on the anterior 

 margin. The anchor-plates of the posterior end (Fig. 14. 10) 

 measure ca. 200 // in length by ca. 150 (jl in width. The serration 

 of the holes and the bridge is as in the plates of the anterior end. 



The miliary granules (Fig. 11. 5-6) are distinctly different in 

 the two ends of the specimens. In the posterior end they are 

 10 — 20 ^ large, irregularly shaped bodies making a dense layer 

 all over the skin. In the anterior end they are but 8 — 10 ^ long 

 and are more scattered. Oval plates are not found. In the oral disk 

 there are no calcareous deposits, but in the tips of the tentacles 

 there are some small irregularly shaped rods (Fig. 11. 7). 



P. oculata differs from all the other species of the genus, in 

 the shape of the calcareous deposits as well as in the shape of 

 the body, which is unusual, conical. 



