304 Leuckart: Bericht üb d. Leist. in d. Naturgeschichte 



Panceri an eine Phyllactinia vergeben ist). Column firm in texture, 

 low, broad, crowdedly covered with elevated, subtentaculiform tu- 

 bercles or papillae. which have round inflated tips, those on the 

 sides simple or two- or three-lobed; those at the margiu of the disk 

 elongated, pedunculated, the end divided into 2 to 6 rounded lobes. 

 Tentacles numerous, rather long , the inner ones largest. Disk 

 broad, with a naked area or fossa between the tentacles and the 

 margin. 



Calliactis Verr. Column very changeable in form, in füll 

 expansion elevated, subcylindrical, with a broadly expanded base, in 

 contraction forming a broad, low, flattened cone or convex disk. 

 Surface nearly smooth in expansion, except near the base, where 

 there are one or more transverse rows of conspicuous lateral po- 

 res or cinclidae, which have thickened, permanently raised borders. 

 Basal margin below the pores thiu and expanded, usually with an 

 additional internal lamella intercalated between the larger ones that 

 extend to the disk, all of which are usually visible through the 

 thin but firm walls. Aconthia highly developed, eraitted freely from 

 the cinclidae. Ist mit Adamsia verwandt und lebt, wie diese, auf 

 Schneckenhäusern, die von Bernhardskrebsen bewohnt sind. In den 

 wärmeren Meeren, dem Anschein nach weit verbreitet. Typus A. 

 decorata Drayt. 



Epiacti s Verr. Integument firm. Column subcylindrical, capable 

 of involving the summit and contracting into a hemispherical form, 

 with a distinct submarginal fold or »parapet« , separated from 

 the tentacles by a narrow fosse; surface smoothish, in contraction 

 reticulately wrinkled. Near the base it is surrounded by a circular 

 wrinkh? or depression, upon which there are borne a variable num- 

 ber of young of various sizes, appearing as if originating from sur- 

 face-buds, but possibly produced from ova attached to this place to 

 the skin. These young may be removed withoiit rupture of the in- 

 tegument, although they adhere quite firraely and leave a depression 

 in the surface of the skin, but there are no apparent lateral ope- 

 nings in the wall. Tentacles numerous, about 50, in preserved spe- 

 cimens short and thick, arranged in several rows. 



Subord. Zoanthacea. Durch 3 Sp. Mamillifera (M. conferta n.) 

 und 3 Sp. Gemmaria Duch. et M. {G. elongata, G. humilis und G. 

 crassa, sämmtlich neu) vertreten. 



Ebenso Subord. Antipathacea nur durch eine einzige neue 

 Art : Antipathes Panamensis n. 



Aus der Ordnung der MadreporaHer wird zunächst nur das 

 Gen. Montipora Bl. (Fam. Madreporidae, Subord. Madreporacea) mit 

 M. fragosa n. aus Californien aufgezählt. 



An die hier mitgeth eilten Untersuchungen schllessen 



