70 BULLETIX OF THE 



specimen from olT Nova Scotia, showing tlie extreme variation in 

 form. 

 Fig. 3 c. The same. One of tlie Large spine-like spicula (c) from the margins of the 

 cahcles. ICnhirged 22 diameters. 

 Od. Tlie same. Spicula :/',</, fusiform spicula found in the caliclcs and corn- 

 enchyma; h, k, spicula with enlarged ends, from the calicles ; i,j, small 

 spicula from the tentacles. Enlarged 22 diameters. 



4. LepiiJisis luTKjiJIora V. One of the calicles of an alcoholic specimen from 

 the West Indies. Enlarged 8 diameters. 



4 a. The same. Scale-like spicula of the coenenchj-ma ; /), two of the larger ; 

 c, two of the smaller forms. Enlarged 75 diameters. 



5. Acanella elmrnea {Vovivt.) Y . One of the calicles, from an alcoholic speci- 

 men. Enlarged 8 diameters. From a West Indian specimen. 



G. Anthothela f/raiidiJJord (Sars) V. Two branches from a ramose alcoholic 



specimen, taken off Nova Scotia. Natural size. 

 G a. Tiie same. Spicula: e, f, rough fusiform spicula from the cocncnchyma ; 



'/, //, from the calicles. Enlarged 75 diameters. 

 7. Junirpltlhija Liilkeni V. Branch of a specimen in alcohol, from off Nora 



Scotia. Enlarged 2 diameters. 

 7 a. The siamc. Spicula : /', one of the rough club-shaped spicula from the 



calicles ; r, d, rough fusiform spicula from the ca'ncnchyma. Enlarged 



75 diameters. 



FLATE V. 



Fig. 1. Aclinnu'je Inngimrnis V. View of the expanded disk and tentacles, from 



life. One half natural size. 

 " 2. The same specimen. Side view in partial expansion. The dotted line 



shows the extent of the basal concavity. One half natural size. 

 Figures 1 and 2 are from one of the original type-specimens, dredged by 



the U. S. Fish Commission in 1880, and kei)t in an aquarium for 



several days. 

 " 3. FJahcUnm Goodci V. Side view of a dry and somewhat broken specimen 



from the fishing banks off Nova Scotia. From a photograph. Natural 



size. 

 " 4. The same. Top view of an alcohic specimen, dredged off IMartha's Vine- 

 yard by the U. S. Fish Commission. Natural size. 



PLATE VI. 



Figs. I to Ic. Three examples of ^(upiiiia dh/ssicola V., attaclicd to the tube (ij) 

 of Ifi/(din<irla nrt'ife.r V., natural size ; h, head and anterior segments of 

 the annelid protruded from the tube, side view ; /, tiie o2d and ood 

 seijments of the s.ime annelid, natural size ; ,/, caudal segments and 

 cirri, enlarged 2 diameters ; k, under side of head and anterior seg- 



