der niederen Thiere während der J. 1854 — 1855. 401 



others by tubulär processes ; frond somelimes partially adnate and 

 decumbent. 



D. crotali n. sp.* Bass-Str. — D. magellanica n, sp. Älagellans- 

 Str. — D. inermis n. sp. Neuseeland. 



¥sLm. M embraniporidae. (Polyzoary membranaceo-calcare- 

 ous or calcareous, expanded, encrusting, sometimes foliaceous, con- 

 torted and suberect. Cells horizontal, quineuncial or serial.) 



Gen. M embr anip or a Johnst. Polyzoary incrusting or sub- 

 erect, foliaceous and contorted, spreading irregularly. Cells more or 

 less irregularly disposed or quineuncial, wilh raised margins ; a grea- 

 ter or less extend of the front membranaceous and flexible. 



M. membranacea (L.^ Bl. Europ. IMeere. — itf. /n'/osa (L.) Johnst. 

 Europ. Meere. — M. coriacea (Esp.) Gr. Europ. Meere. — iW. nmbo- 

 natu n. sp. Vandiemensland. — M. lineata (L.) ßusk. Europ. Meere. 

 M. Flemmingii Busk (Flustra membranacea Zool. Dan.) Europ. Meere. 

 — M. Rozieri (Aud.) Busk. Rio de Janeiro. — HL Rosselii (Aud.) 

 Busk. Orkney. — M. calpensis n. sp. Gibraltar. — M. slenosloma n. sp. 

 Tasmania. — M. cervicornis n. sp. hab. ? — 31. Lacroixii {S?i\.) Busk. 

 Europ. Meere. — M. cyclops n. sp. Neu-Seeland. — M. monostachys 

 n. sp. Brittische Küste. — M. mngnilabris n. sp. Algoa-Bay. — M. 

 galeata n. sp. Ealklands-lns. 



Gen, Lepralia Johnst. Polyzoarium adnate, crustaceous, sprea- 

 ding froni a centre in a more or less circular form; composed of con- 

 tiguous or connected, calcareous decumbent cells, the vvalls of which 

 are complet in frond. 



I. Armatae. 



A. Species having avicularia. 

 a. Median and Single. 



* Avicularium superior (above the month). 

 L. Brogniartii (Aud.) Busk. Engl. Küsten. 

 ** Inferior (below the raouth). 

 L. Landsb orovii iohnsl. Engl. Küsten. — L. galeala n. sp. Falk- 

 lands-lns. — L. reticulata Macgillivay. Engl. Küste. — L. marionensis 

 n. sp. Marion-Ins. — L. auriculata l\?iss. Orkneys u. s. \v. — L. con~ 

 cinna n. sp. Covelands-Ins. — L. verrucosa Thomps. Schottland. — L. 

 violacea Johnst. Engl. Küste. 



ß. Avicularia either double or, if singlc, on one side of 



the cell ; on every cell or irregularly distributed on 



th e polyzoary. 



L. spinifera Johnst. Ins. Wight u. s. w. — L. trispiyiosa Johnst. 



Engl. Küste. — L. coccinea (Zool. Dan.) Johnst. Irland u. s. w. — I. 



linearis Hass. Engl. Küste , Mittelländ. Meer. — L. alala n. sp. Cap 



Archiv f. Naturgescb. XXII. Jahrg. 2. Bd. AA 



