Issued by C. G. LLOYD. 



PLATE m. 



Tig. 5. 



Fig. 4 



Fig. i, photograph of a fresh specimen from Auguste B#rnin, Monaco. 

 Fig. 2, an egg. Figs. 3 and 4, sections of an egg. Fig. 5, section of an egg with 

 the volva pulled away. 



CLATHRUS CANCELLATUS. 



