ANEMONES 393 



Up to the present time E. prolifera had been recorded from Puget 

 Sound alone. Collections from Tomales Bay, San Francisco, Pacific 

 Grove, and San Pedro, Cal., enable me to extend its range southward 

 for several hundred miles. 



EPIACTIS RITTERI ^ sp. nov. 



(PI. XXV ; figs. 6, 7 ; text-fig. 2 1.) 

 Locality. — Popof Island. 



There are several specimens of this actinian in the collection, from 

 the shores of Popof Island, Alaska. 



Fig. 21. Efiactis rittert. Section through upper portion of the column, across 

 the sphincter and other endodernial muscles. Mesoglcea black. 



The column is about as broad as long, with a well-expanded foot 

 disk. The life-size photographs reproduced in Plate xxv, figs. 6 and 

 7, give a fair idea of the shape of the animal in partial and complete 

 contraction. The body wall is smooth, without true verrucae, though 

 near the foot there may be ten or twelve rows of protuberances which 

 slightly resemble them. These are caused by transverse and longitudi- 

 nal wrinkles, and are of the same histological character as the rest of 

 the wall. They vary greatly in size, even in the same individual. 

 There are no cinclides. The tentacles are numerous, moderate, sub- 

 equal, in several rows, and may be entirely concealed in contraction. 



'Named for Professor Wm. E. Ritter, of the University of California, who 

 made the collection, and to whose kindness I owe the opportunity of examining it. 



