164 G Canadinn Arctic Expedition, 1913-1918 



Plate XXXI. 



Fig. 1. Edwardsiella sipunculoides (Stimpson). Side view of the upper part of the column 

 and bases of the tentacles, from life, x about 4. By the author. 



2. PseudophilUa nrclica Vcrrill. Type. Side view, with part of the outer coat removed. 



Eggs and larvte show near I he b.is.'. By A. H, Verril.l. 



3. Tcalidjixis st'-lla Vcrrill. Tran.sverse section of a perfect mesentery from a Hudson 



bay specimen; m, longitudinal muscle; b, basal muscle; i, endoderm; p, outside 

 of stoniodseura. B>- the mithor. 



4. Holcnnipa (?) atiomola Vtriill. New. Side view of the type, from life; x about 4; 



b, one of the branched tentacles more enlarged. By the author. 



5. L'rii(7/(o cra.s.s-ifo/-/j/.5 Ehr. Transverse section of a tentacle; g, ectoderm; h, me-sogloea; 



i, endoderm; 1, muscle lamella;, after McMurrich. Much enlarged. 



6. Melridiian diiinOivs (Ellis). From a photogi'aph of a small living specimen. Some- 



what enlarged. 



