EXPLANATION OF PLATE XXXVIII. 



Figure 282. — Hybocodou prolifer, (p. 736;) natural size, the head seen from the back 

 side. 



283. — Alcyonium carneum, (p. 737;) three of the polyps fully expanded, much 

 enlarged. 



284. — Sagartia leucolena, (p. 738;) natural size, in expansion, but the tentacles 

 are not fully extended ; the * indicates the long odd tentacle. 



285. — Halocampa producta, (p. 738 ;) natural size, well expanded, but the body 

 may be much more elongated. 



286.— Epizoanthus Americanus, (p. 740;) a colony which had completely cov- 

 ered and absorbed a shell occupied by a hermit-crab, (Eupagurus 

 pubescens,) which still lived within the cavity; the polyps are not 

 expanded, natural size. 



287. — The same ; one of the polyps in full expansion, natural size. 



(Figure 262 was copied from L. Agassiz ; 286 is from the American Naturalist, drawn by E. S. Morse ,- 

 the rest were drawn by A. E. Verrill.) 



