K. MITSlKrEI : STUDIES ON 



holes. The shaft is about 0.30 cm. long and ends distally in 

 two flukes, each of which shows some teeth on the outer side. 

 In one ease there were five teeth on one side, and three on the 

 other. The anchor is often broken in the middle of the sliaft. 

 In my opinion, v. Makenzeller's Fig. 4 B a represents nothing else 

 than such a broken anchor. 



As regards the other kinds of calcareous deposits {h — d) those 

 in the tail portion of the perisome are larger and more numerous 

 than in more anterior parts. 

 They are nearly all more 

 or less modified tables. 

 The disk in regular ones 

 is mostly lozenge -shaped 

 with four or more large 

 holes, but in others it 

 appears merely like a 

 complex of irregular 

 curves. The measurements 

 of the disks are as follows : 

 0.24 X 0.09 mm ; 0.27 x 



Textfig. 53. 

 Ankijrodermri roretzU : a — Calcareous riug ; h, c — Simple 

 tables ; d — Table ydth more holes ; e — Anchor, (b — e x 

 0.09 mm.; 0.18 X 0.08 l''C)- I-Interra-liilL-, ; R-EmliMli^. 



mm. ; 0.23 x 0.08 mm. 

 which measured in heidit 



From the disk rises a high spire, 

 0.15 mm., 0.11 mm., 0.10 mm., 0.11 

 mm., 0.08 mm. It is mostly very regular, consisting of three 

 columns with five or more cross-bars, the crown ending in 

 a number of teeth. There are, however, irregular incomplete 

 spires too. In the tail portion, wine-red or rather yellowish-brown 

 corpuscles are not so numerous as in more anterior portions. 

 Further, there seem to be present no clusters of spoon-shaped 

 bodies. 



