der niederen Tliiere während der J. 1854—1855. 403 



or branched and sublinear. Cells disposed on both surfaces, back to 

 back, immersed, coalescent, horizontal to the plane of Ihe axis. 

 * Polyzoary iiiore or less expandcd, foliaceous. 

 E. foliacea (Ell.) Lamk. Engl, und Millelländ. Meer. — E. 

 contorta n. sp. Algoa.Bay. 



** Polyzoary divided into branching lobes. 

 E. urceolala n. sp. Algoa-Bay. — E. platalea n. sp. Bass-Slr. — 

 £. lichenoides Seba Bass-Str. — E. fuegensis n. sp. Tierra del Fuego. 

 E. decussala M. Edw. Australien. — E. flabellaris n. sp. Algoa-Bay. 



— E. gracilis Lamx. Bass-Str. — E. giganlea n. sp. Patagonien. — 

 E. cervicornis (Ell. et Sol.) Busk. Eng. Küste. 



Gen. Retepora Lam. Polyzoarium foliaceous , calcareous, reti- 

 culated. Cells immersed, opening on one surface alone. 



R. cellulosa (Cav.) Lamx. Mittelländ. Meer. — R. icamana Busk. 

 Engl. Küste. — R. phoenicea n. sp. Bass-Str. 



Farn. Vin cul ariadae. (Polyzoarium rigid, calcareous, anar- 

 ticulated ; cells disposed alternately around an imaginary axis, forming 

 dichotomously dividing branches. Surface of polyzoary not areolated.) 



Gen. Vincularia Bl. Branches of polyzoarium not tubulär; 

 front of cells surrounded by .a raised border , arcuate above, nearly 

 straight below. Ovicells immersed, opening above the mouth of the 

 cell upon which they are placed. 



V. ornata n. sp. Patagonien. 



Farn. Setenariadae. (Polyzoary more or less regularly or- 

 bicular, convex on one side, plane or concave on the other, probably 

 free. Furnished with large and powerful vibracala probably loco- 

 motive, often having araneous particles affixed in the centre of the 

 under surface.) 



Gen. Cupularia Lamx. Each cell throughout the polyzoa- 

 rium with a vibracular cell al the apex. 



C. guineensis n. sp. Neu-Guinea. ~ C. Owenii (Gr.) Busk. Afri- 

 kan. Küste. — C. Lowei n. sp. Madeira. — C. stellala n. sp. Philip- 

 pinen. ~ C piriformis n. sp. St. Vincent. 



Gen. Lunulites n. Cells arranged in series radiating from the 

 centre and bifurcating as they advance; vibracula in linear series al- 

 ternating with those of the cells. 



L. gibbosa n. sp. Cap Capricorn. — L. capuUis n. sp.* Ebendah. 



— L. philippinensis n. sp. Philippinen. — L. cancellala n. sp. Ebendah. 



Gen. Selenaria n. Only a certain number of cells dispersed 

 throughout the polyzoary furnished with vibracula. The front of each 

 cell, so furnished, covered by a cribriform calcareous expansion ; olhers 

 arched above, contracted below ; under surface of polyzoary marked 

 with grooves. 



S. maculala n. sp.* Bass-Str. 



