MUSEUM OF COMrAKATIVE ZOULOCIY. 71 



ments of another specimen of the same anneHil, natural size. These 

 figures are mostly from alcohoUc specimens, somewhat restored as to 

 positions. Trom the collection of the U. S. Fish Commission. 

 Fig. 1 a. Sagarlia ahijssicola. Expanded. 



" 1 b. The same. Partially contracted. 



" 1 c. The same. Expanded and also showing the acontia («) protruded from 

 the pores (cindida) in the sides of the body. From alcoholic specimens. 



" 2. Sagartia Acanellce V. Side view of a specimen covering the terminal part 

 of a branchlet, a, h, of Acanella. Enlarged 2 diameters. 



" 2 a. The same. Side view of a smaller, partially contracted specimen on the 

 middle of a branchlet. Enlarged 11 diameters. From alcoholic speci- 

 mens. 



" 3. Sagartia spongicola. Nearly vertical view of a specimen not fully ex- 

 panded. Natural size, from life. 



" 4. Actinauge ncxilis V. Four contracted alcoholic specimens attached to 

 and completely covering the distal portion of the axis of a mutilated 

 Ballicina Finmurcluca. a, side view of the terminal one, showing how 

 the basal membrane extends over the end of the axis of the Dalticina ; 

 d, basal view, showing the suture by which the edges of the basal disk 

 unite to clasp the axis. Natural size. 



" 5. The same. Top view of another less contracted alcoholic example, from 

 the tip of a mutilated Balticina. Natural size. 



" G. Actinauge nodosa. Side view of a partially contracted, medium-sized ex- 

 ample of the commonest or normal form, but with a bulbous base, 

 enclosing mud. From an alcoholic specimen. One half natural size. 



" 7. The same, var. tuberculosa V. Side view of a moderate-sized example, 

 contracted in alcohol. Natural size. This specimen was from the fish- 

 ing banks, off Nova Scotia. 



" 8. The same, var. coronata V. Side view of a contracted alcoholic specimen, 

 from the Blake collection. Natural size. 



" 8 a. The same specimen. Top view. Enlarged 2 diameters. 



". 0. Synanthus mirabilis V. ('.) Portion of the dead axis of Paramuricea grandis 

 entirely covered by the confluent individuals of this actiniau. Enlarged 

 2 diameters. From an alcoholic example. 



PLATE VII. 



Fig. 1. Urticina perdix V. Side view of an expanded specimen, of medium size, 

 from life. One half natural size. 

 " 1 a. The same. Mouth and segment of disk, with tentacles, of a larger exam- 

 ple, from life. Natural size. These drawings were made from the 

 original type-specimens, dredged ofi" Martha's Vineyard by the U. S. 

 Fish Commission, and kept alive for several weeks in aquaria. 

 " 2. Actinostola caliusa V. Side view of a medium-sized exami)le, from life. 

 One half natural size. From a specimen dredged by the U. S. Fish 

 Commission. 



