EXPLANATION OK PLATE XLII. 



Crioceras, sp. 



Fig. 1. Lateral view of a crozier and part of a limb or shaft possibly 

 identical with the specimens represented in Plate xxxv., fig. '1, and 

 PI. xlvi., fig. 2, and PI. xlvii., fig. 5. In this instance the tubercles 

 are confined to the abdominal angles, and are noi developed on the 

 flanks. Slightly more than half natural size. 



Crioceras flindersi, McCoy, sp. (?) 



,, 2. Dorsal view of the limb or shaft cast represented in Plates xxxvi., 

 ti^ f . '2, and xliv., fig. '2, exhibiting a flat dorsum, and strong, single, 

 slightly curved costse. Seven-eighths the natural size. 



