PLATE IX. 



side view ....... G 



siilo view, contracted (on a suiallcr scale) . G 



head ; showing the hooks . . . . G 



dorsal \'iew ....... G 



upper portion, expanded ; side view . . G 



tipper portion, contracted . . . . G 



extremity of an antenna . . . . G 



extremity of foot, showing peduncle . . G 



dorsal view ....... G 



dorsal view ; corona expanded . . . G 



dorsal view ; corona contracted . . . G 



side view ....... G 



dorsal view ; contracted mto a ball . . G 



transverse muscles .shown under pressure . G 



side view ; corona expanded . . . . G 



side view; corona conti-actcd . . . G 



dorsal view ; hiding the foot ... . G 



cohunn partly retracted ; and antenna . . G 



dorsal view in outline ; showing tlic spines . G 



dorsal view G 



dorsal view G 



side view ....... G 



dorsal view ; contracted G 



