112 Hoff. 
Korrelationsschema I. 
| Tiergewicht 
| [108 9 DAR RETTET EI 
conn nn fF wwe 
n 
= 
© 
De 
© 
.-_ 
as 
= 
© 
2 
jo) 
n 
© 
la} 
o 
=] 
be) 
= 
(de) 
© 
> 
“= 
He 
Ss 
— 
© 
ra 
SO EF WD m 
i abe abe 
Die Radula. 
Die von Taylor (20, 245) untersuchte Arzanta arbustorum hatte 
die Radula-Formel rn — 10220 Zähnchen. „The central tooth 
has a base of attachment much longer than broad, with concave lower 
margin, and has a single large median cusp, with a small undeveloped 
one at either side. The lateral teeth are of similar type to the central, 
but are deficient of the inner angle of the base of attachment, the 
outer laterals have a side cusp, and cutting point, the transition from 
the laterals is shown by the greater proportional development of the 
cutting point, which becomes bifid, and lesser development of the 
