82 G Canadmn Arctic Expedition, 1913-1918 



Pl\te XVII. 



Fig. 1. Ardhoma.stus urandiflorus Vcr. Spicules from the ccenenchyma: a-d, elongated rod-like forms 



and slender spindles, these are the dominant forms; e-g, club-like forms; h-m, short irregular 



spicules; n-o, small crosses; p, an unusual large l:)ranched form. 

 Fig. la. The same. Slender internal spindles from the coeienteron walls. 

 Fig. Ic. The same. Spicules from the tentacles of No. 6430. 



Fig. Id. The same. Spicules from the outer layer of the tentacles of a specimen from the Banks (lot 404) 

 Fig. 2. Anihomastus aga.s.sizu ^'e^., new sp. Spicules from the coenenchyma, outer layer; a-d, shorter 



spindles strongly spinulose; e-g, short stellate and irregular forms. 

 Fig. 2a. The same. Spicules of ihe interior, from the ccelenteron walls; h-k, slender rod-like forms; these 



are the dominant kinds; 1, a club; m, a small cross — few of these occur. 

 Fig. 2b. The same. Spicules from the tentacles; n-o. rod-like forms; p, a short irregular kind. 

 Fig. 2c. The same. Spicules from the outer layer of the polyps; r-v, short, thick ellipsoids and ovate 



forms, strongly spinulose; x, stellate form; y, a double star; z, a small cross seen in profile. 

 Fig. 3. AcancUa normani Verrill. A cluster of four contracted polyps from tip of a branch; enlarged 



about 7 times. 

 Fig. 3a. The same. Spicules; not the largest. 



Figs. 4, 4a. Keratoisis omntn VeiTill. Two calicles; a longer and a shorter one from the same stalk. 

 Fig. 4b. The same. One r)f the larger spicules from the calicles; b. three of the small spicules from the 



coenenchyma. 



