PLATE VI. 



ventral view H 



side view ; corona contracted . . . . H 



side view ; corona expanded II 



a cluster of tubes H 



head, side view; * x edge of chitinous ] after Judge 



plate j Bedwell 



buccal funnel, mastax and oesophagus G 



head and neck; ventral view showing vascular 



system H 



young female, dorsal view H 



ventral view .... 



side view ; retracted 



head ; dorsal view .... 1-after Mr. Cubitt 



head ; seen from above . 



head ; corona contracted 



group : x, y, z successive stages of growth . . H 



dorsal view H 



ventral view H 



