YOPEYLLIACEA. ZOANTHID.E. 



THE WRINKLED CREEPLET. 

 Zoanthus Alderi. 



(Sp. nov.) 



Plate IX. Fig. 8. 



Specific Character. Polypes free from sand ; set in single file, obconic, 

 transversely wrinkled. 



GENERAL DESCRIPTION. 



Form. 



Basal band. Narrow, smooth, irregularly branching, free from sand. 



Column. Inversely conical, the summit being two or more times as 

 broad as the base ; summit (in the button state) swelling, flat, depressed 

 in the centre, with many (about twenty ?) radiating strive, indicating the 

 marginal teeth. Surface smooth, without any investment of sand, but 

 marked throughout with close-set transverse or annular wrinkles. 



Disk and Tentacles. Unknown. 



Colour. 

 Basal band and column. Opaque milk-white. 



Size. 

 Height of column about two lines ; greatest diameter about half a line. 



Locality. 

 Northumberland : on a stone, at extreme low- water. 



The slight acquaintance that I possess with this species 

 I owe to Mr. Joshua Alder, who has sent me a drawing 

 and description of a specimen found by him at Cullercoats, 



x 



