der niederen Thiere während der J. 1668—1869. 311 



Eunoella Gr. Coral crust-like, thin. Polypes large, convex 

 when contracted. 



Sphaerella Gr. Coral hard, coriaceous, globular or sub- 

 globose, affixed by a slender peduncle, growing in Clusters. Poly- 

 pes scattered over the whole surface^ quite retractile. 



Chloro zoa Gr. Coral soft, divided into finger-like lobes, 

 deep green. Polypes very small, irregularly disposed. Tentacles 

 petal-like, ovate, lanceolate, connected by a membrane like a veil 

 and lacerated or ciliated at the tip. 



Amicella Gr. Coral thick at the base, branched, tree-like. 

 Polype-cell ratber prominent, covered with eight valves, each mar- 

 ked with two rows of spicules. Polypes quite retractile. Tentacles 

 simple, clavate (Quoy et Gaim.). 



Dan eil a Gr. Coral soft; stem thick, barren, not dilated at 

 the base; branches slender. cylindrical, ascending. Polypes small, 

 on the branches; spicules very abundant in all parts of the stem. 



Äreocella Gr. Coral rather rigid, stipitate, very broadly 

 expanded, sinuate on the edge: upper surface areolated, areolae 

 hexagonal, each surrounded by a series of small tubercles. Polype 

 in centre of each areola. 



Cladiella Gr. Coral half-ovate or obconical, in Clusters, 

 below tapering to a small base, barren, above flat. Polypes re- 

 tractile. 



Loridella Gr. Coral erect; stem thick, with a contracted 

 base; surface coriaceous/ with imbedded fusiform spined spicules. 

 Tentacles with lobes on all sides (Quoy). 



WardellaGr. Coral simple; stem simple, with very nume- 

 rous smooth internal spicules forming a thick spongy web. Polypes 

 not retractile. 



Capnella Gr. Coral erect; stems clustered, coriaceous, gra- 

 nulär, divided into sliort branches; outer surface studded with 

 small, flat, smooth, irregular-shaped spicules. Polype-cells crowded 

 and imbricate on all sides of the oral club-shaped branchlets, po- 

 lype-cells campanulate, slightly eight-lobed. Polypes retractile. 



Verrilliana Gr. Coral soft, branched. Stem tapering, cy- 

 libdrical, longitudinally grooved. Polypes clustered together on all 

 sides of the ends of the branches, forming an ovate-lanceolate group 

 of thyrse. Polype-cells cylindrical, with a subglobular heat when 

 the polype is contracted. 



Manche der hier aufgestellten neuen Genera und 

 Familien dürften übrigens gerechtes Bedenken erregen. 

 Form, VerästlungsweisC; Stellung und Bildung der Po- 

 lypenzellen — die Momente also, auf die Verf. das Haupt- 



