58 G 



Canadian Arctic Expedition, 1913-1918 



PLATE V. 



Fig. 1. Eunephthya thrysoidea Verrill. Type from cape of Good Hope. Side view of one of the polyps to 

 show the arrangement and forms of the spicules, and the spinose convex surface of the antho- 

 codial region. The tentacles are strongly incurved . x 36. 



Fig. la. The same. Spicules. a, a foliated and spinose club from the outer rows of the anthocodia, 

 one of the more common forms; b, a one-sided club from lower part of the same area; c, a 

 more slender form of club from the anthocodia; d, an irregular trilobed form; e, a small 

 spindle from a tentacle. x 70. 



Fig. 2. Drifa glomerata Verrill. Spicules from the type of Eunephthya glomerata V. a-f, clubs and a 

 rough spindle from the anthocodia for comparison with those of fig. la. x 132. 



Fig. 2a. The same: a e, various forms of clubs from the anthocodia; f g, one-sided clubs; h, acorn- 

 pound cross; j 1, smaller clubs; m, a spindle spinose on one side; n, a normal spindle' 

 o r, small spicules from the tentacles. x 132. 



Fig. 3. Gersemia clavata Dan. A polyp partly expanded, from an alcoholic specimen, from the gulf of St. 

 Lawrence. The anthocodial region is somewhat flattened by pressure, and therefore appears 

 relatively too wide. x 36. 



Fig. 3a. The same specimen: spicules. a h, from the anthocodia; i m, from the coenenchyma of a 

 branchlet; n p, from a tentacle. x 132. 



Fig. 4. Gersemia clavata Dan: Spicules of the type, after Danielssen. a e, spicules from the anthocodia; 

 i, j, 1, from the cortex of the stem; k m, from the cortex of a branch. 



Fig. 5. Gersemia mirdbilis Dan: Spicules from the type, after Danielssen. a, b, c, spindles from the 

 anthocodia; d g, from the tentacles; h 1, from the cortex of stem and base. 



