der niederen Thiere während der J. 1868—1869. 305 



sich in gewisser Hinsicht ergänzend an die Critical re- 

 marks on the halcyonoid polyps in the Museum of Yale 

 College, with descriptions of new Genera by Verrill 

 (Amer. Journ. Arts and Sc. Vol. XLV. p. 411— 415), die 

 namentlich die Gruppe der Horncorallen betreffen und 

 mehrfache Berichtigungen der Synonyrnie enthalten. Ein- 

 zelne Arten, bes. des Gen. Muricea, werden dabei zu Re- 

 präsentanten besonderer neuer Genera erhoben, so M. 

 divaricata Verr. {An f h o g orgia), M. verrucosa und M. 

 tortuosa , zwei neue Formen von Panama {Heterogor- 

 gia)y Echinogorgia arbusculum Verr. (Psammog orgia) 

 und M. sinensis (Astrogorg ia). 



Änthogorgia is characterised by very prominent , tubulär 

 cells, eight-rayed at summit; a thin coenenchyma containing imbed- 

 ded fnsiform spicula; those of the cells long, fusiform, thorny, im- 

 bedded at varions aiigles in the surface. but not imbricated. 



Heterogorgia has a horny axis, smooth coenenchyma, with 

 very small, spindle-shaped spicula; verruciform cells, armed at the 

 summit with longer, slender, projecting and divergent sharp spicula, 

 which are oiten much bent. 



Psammogorgia. A rather thick coenenchyma, with the sur- 

 face granulated by the numerous very small rough spicula. These 

 are of several forms, but mostly short thick blunt spindles. very 

 strongly papillose and thorny; others are irregulär, as broad as 

 long, very thorny; some are pretty regulär stars with five, six or 

 more rough rays. The cells are either somewhat prominent or flat 

 and scattered on all sides. 



Astrogorgia is allied to the last, and like it has a granulated 

 surface and the cells scattered on all sides and usually verruciform. 

 The spicula of the coenenchyma are however very different, being 

 nearly all long fusiform sharp warty spindles of various sizes. In 

 alcoholic specimens the tentacles are not wholly retracted, but form 

 a low cone, covered by the conspicuous spicula at the bases of the 

 tentacles. 



Ebendas. wird Allopora tenuis Dana zum Typus eines neuen 

 Gen. Cyathopodiu m gemacht: a Tubipora-like polyp with short 

 cup-shaped tubes, connected by narrow calcareous stolons, which 

 correspond to the transverse plates of Tubipora, and from which 

 the new buds arise. 



Pourtales fand bei seinen Draggungen an der 

 Küste von Havanna von neuen Arten: Antipathes felix, 

 A. Jcurailis^ ^ca/t/Z/o^or^m (Blepharogorgia Duch. et Mich.) 



