PLATE XXI. 



Fk;. \. -TMlania variolosa Kirkp-.s].. ii. \ nat. size, p. ■Vl. 



Vm. \a. -Port) areas of same (x H>). 



Fk;. 2. — Tedania coulmani Kirkp., p. 33. 



Figs. 3, 4, in. — lophon radiatus Topsent. Nat. size, p. 'ix. '^a, closed osciile, X 1'. 



Pk;. 4/^ — Open osculo of same (x 10). 



Fig. U. — Pore area of .same ( x ID). 



Figs, n, ha. — lophon spatnlatus Kirkp., uat. size, p. i'9. 



Fig. i)b. — Osculi' of same fully contracted, side view ( x I it). 



Fig. 5J'.— Oscule of same, front view (x 10)- 



Fig. 5':. — Pore area of same (x 10). 



Fig. ((. — lophon HahMo-iluiitat lis Kirkp. \ nat. size, p. 30. 



Fig. Oa. — P)rancli of same, i nat. size. 



Fig. {Mk — Oscule of same, nat. size. 



Fig. Cic. — Pore area of same f x li). 



