EXPLANATION OF PLATE XXXV 



Criockras jackii, Ethfil, 



Fig. 1.— Lateral view of a partly testiferous example with overhanging 

 whorls, and tubercles on the oldest whorl preserved. Three- 

 quarters natural size. 



Criockras, sp. 



,, 2. Ventral view of a large shaft or limb (seen in lateral view in Plate 

 xlvii., fig. a) with a narrow venter, strong, distant, cristiform costa 1 ; 

 three angles of the hexagonal primary enstate si Hirii and two rows 

 of acute tubercles on each side are visible, two abdominal and two 

 dorso-lateral. (.See Plate xlii., ii<_'. 1 ; PI. xlvi.. fig. 2; PI. xlvii., 

 fig. 5). 



(About one-half natural size.) 



