244 CLASS IV. 



« 



SEA-QUINCE. 



6s Alcyonium cydonium. Mass oval or elliptic, 

 convex above, and flattened below ; laciniated or irre- 

 gularly creviced ; little cells apparent when the exte- 

 rior has not been rubbed off. 



Seas of the North, of Africa and of India. 



LUMPY. 



6. Alcyonium wiflssa. Shapeless, fawn-coloured, 

 spongy, and spread out ; little cells with five rays ; 

 centre black. 



Sea of Norway. 



TURBAN. 



*7, Alcyonium cidaris. Of a nearly round form; 

 surface firm, hard, cellular, undulated, and sometimes 

 osculated. 



Mediterranean. 



HIVE-FORMED. 



8. Alcyonium vesparium. A large, upright mass, 

 of an oblong oval shape, slightly pyramidal, obtuse 

 or truncated at the summit ; from five to eight deci- 

 metres in height. 



Seas of India. 



INCRUSTING. 



9. Alcyonium hicrustans. Masses incrusting, 

 obtuse, proliferous, or lobed, and very white; pores 

 numerous, close together, and somewhat in the form of 

 a star. 



On the fucus of the European seas. 



climbing. 



10. Alcyonium serpens. Fleshy and whitish 



