BRITISH ZOOPHYTES. 99 



Genus III. Cdspidella, HincJis. {Cusjns, a point.) 

 Stem creeping, filiform. Calycles cylindrical or sub- 

 cylindrical, perfectly sessile, with a conical operculum 

 composed of many pieces. Polypites as in last genus. 

 — T. H. 



1. C. HUMiLis, Hincks. 



Campanularia humilis {T.E.,Ald.), Calycella humilis 

 {All, McA.). 



Hab. : On the stems of zoophytes. Llandudno, 

 Whitby, Shetland {T. E.), Anglesea (A 8. P.), North- 

 umberland (Aid.). Very minute. 



The sessile calycles are like ** little cylinders rising 

 directly from the creeping stem." 



In the Mag. and Ann. of Nat. Hist., 4th ser., xiii. 

 129, Mr. Hincks points out that he has added to our 

 fauna the Lafoeina tenuis of Sars, which he describes 

 as being " distinguished from C. humilis by possessing 

 extraordinary appendages, allied in structure and 

 functions to the sarcothecge of the Plumulariidce, dis- 

 tributed in great numbers along the creeping stolon 

 and among the calycles. They consist of filiform off- 

 shoots from the ectoderm, somewhat enlarged at the 

 upper extremity, and invested by a thin, chitinous 

 covering." This species Mr. Hincks discovered whilst 

 dredging at Shetland. 



2. C. GRANDis, Hincks. 



Hab.: Connemara (Brady), Shetland (Aid.). 

 This species has the calycles about twice as large as 

 the preceding. 



3. C. cosTATA, Hincks. 

 Hab. : Whitby {Hincks). 



The calycle of this species is divided into segments 

 by two or three prominent ribs. 



H 2 



