Contents. 
Page 
Introduction . . . . ee: 
Dieser ran Sobelka, am breos Homred, u. 2:2 020 a a en 2 
RE ee ce nr Be a 
DercBeinuc Hol And. SUSSERHORS ii a ee ee ee ae 40 
List of ME Sr ee a en ra a er 
Ispl in atiosact leere De TE 40 
Descriptions of figures of reconstructions and dissections . 2: 22mm m rn 43 
A comparison of the members of the normal plate series with some stages established by other 
BÜETERICHS SE a Er BE Bee a A en ra a nn 70 
Me u TREE a A 79 
BU ale ne Be A a te ST 
