ALCYONIDIUM GELATINOSUM. 491 



a. Zoarium gelatinous. 



AlCYONIDIUM GELATINOSUM, LillllffiUS. 

 Plate LXIX. figs. 1-3. 



Sea Ragged Staff, Ellis, Corall. 87, pi. xxxii. figs, d, D. 



Alcyonium GELATINOSUM, Lirm. Syst. ed. 12, 1295: Pallas, Elench. 353: 



Mailer, Zool. Dan. It. 30, pi. cxlxii. : Ell. ^- Sokmd. Zooph. 



176 : Lamx. Pol. cor. flex. 350 : Blainv. Actinol. 525, 



pi. xcii. fig. 1 : Dalyell : &c. 

 Ulva diapiiana. Sowerhy, Engl Bot. pi. cclxiii. : Lamh. SfBe Candolle, Flore 



Fran9. ii. 6. 

 Epipetrum GELATINOSUM, Okeii, Lelirb. Naturgeseh. Zool. Abth. 2, 80. 

 Alcyonidium diaphanum, Lamx. Gen. Thalass. 71, pi. vii. fig. 4. 

 Halodactylus diapiunus, Farre, Phil. Trans. 1837, 405, pis. xxv. & xxvi. : 



Van Ben. Rech. 60, pi. riii. fig. 12 (Mem. Bruxelles, xviii. 



1845). 

 Alcyonidiu-m GELATINOSUM, Johnst. B. Z. ed. 2, 358, pi. IxTiii. figs. 1-3 : 



Gray : Landsb. : Gosse : Alder : HincJcs : Smitt, &c. 



Zoarium erect, gelatinous, subcylindrical or sometimes 

 slightly flattened, yellowish or greenish yellow, simple 

 or variously lobed and branched, assuming the most 

 diverse shapes. Zooecia closely packed together, their 

 orifices marked by low, blunt papillae which are crowded 

 together over the entire surface. 



Pohjpide with 15-17 extremely slender and flexible ten- 

 tacles. 



Height usually several inches ; sometimes as much as two 

 or three feet. 



Habitat. On stones, shells, rocks near low-water mark^ 

 crabs &c. from tide-marks to deep water. 



Localities. Common and widely distributed. South 

 Devon ; Ilfracombe ; Isle of Man ; Llandudno, tide-marks ; 

 Filey; Oban (T. H.) : Cornwall (Couch) : St. Andrews 

 (Dr. M'Intosh) : Northumberland (Alder) : Isle of Shep- 

 pey, abundant (Farre) : Bass Rock, 24 fathoms; S.E. off 



