PLATE LIV. 



Fi<.. I.— 7. ipodisciu com ■ ntru ui Mann type i. Enlarged «vi k » diameter*. Description, p, 08 

 Tripoditcu* concentricw Mann (form). Enlarged 600 diameters. Description, p. 178 

 i (.— TVipoefia Mann. Enlarged 650 diameters. Description, p. 1 



Mann. Enlarged 6fi0 diameters. Description, p 



442 



