120 BULLETIN OF THE MUSEUM OF COMPARATIVE ZOOLOGY. 



PLATE in. 

 Fig. 1. Pinnule of Antipathes tetrasticha, magnified 10 diameters. 



Fig. 24. Pinnules o{ Antipathes, sp. from Mauritius, magnified 10 diameters. 

 Fig. 25. Side view of contracted polyps of Antipathes spiralis, showing smaller 

 polyps concealed under the arms of the larger, magnified 10 diameters. 



Fig. 26, Upper view of contracted polyps of Antipathes spiralis, the small polyps 

 showing but one or two tentacles ; the tentacles of the large one iu the middle are 

 now contracted. 



Fig. 27. Polyps of AntijMthes lenta, magnified 10 diameters. 

 " '* glaberrima, 



** '* picea, 



" ** tetrasticha, 



" " thyoides, 



" " humilis, 



Cambridge, Febmary 6, 1880. 



