256 



Coelenterata 1. 6. 



Magenhohle in den exumbralen becherformigeu Hohlraum durcli und das polypen- 

 formige Gebilde kriecht am Boden des GefaBes Nahrung sucliend mit seiner Mund- 

 6'ffnung umher. 



Allman entwirft eine allgemeine Skizze vom Ban der Plumulariden und 

 theilt dieselben je nach dem Vorkommen beweglicher , nur an dem proximalen 

 Ende festsitzender, oder unbeweglicher, dem chitinigen Periderm ansitzender Ne- 

 matophoren in folgende Gruppeu ein : 





Eleutheroplea 



Gonangia with special j Eleutheroplea 

 protective apparatus 1 phylactocarpa. 



Gonangia destitute of 



Moveable nematophores 1 g , 

 never present J 



Gonangia with special \ Statoplea 

 protective apparatus \ phylactocarpa. 



Gonangia destitute of 

 special protective ap- 

 paratus 



g , 



| g 

 ; 

 \ Gy 



Von dem Challenger warden folgende Plumulariden gedretscht: 

 Eleutheroplea. Plumularia laxa n. Marion Insel 50 75 Faden. dolichotheca 

 n. Philippinen 10 F. - inslgnis n. 46 40' S., 37 50' 0. 310 uud 150 Fad. 

 abietina n. Prince Edward's Insel 150 Faden. - - stylifera n. Tristan d'Acunha 

 100-150 Fad. - - armata n. Port Jackson 30-35 Fad. 



Antennularia fascicularis n. Tristan d'Acunha 100150 Fad. 



Sciurella n. gen. Trophosome : Hydrocladia not disposed in pinnae but springing 

 from many points round the circumference of chord-like stems. Gonosome: Go- 

 nangia situated in the axils of the hydrocladia, provided with symmetrically disposed 

 horn-like processes and enclosing a ramified blastostyle, whose branches are in 

 connection with moveable nemataphores distributed over the surface of the go- 

 nangium. - - indivisa n. Torres StraBe 510 Fad. 



Acanthella n. gen. Trophosome: Hydrocladia pinnately disposed; hydrocladia 

 bearing branches terminating in simple jointed prolongations in which the places 

 of hydrocladia are taken by simple spine -like appendages. Gonosorne not 

 known. - - effusa n. Torres StraBe uud Rifl'e von Zarnboanga 10 Fad. 



Schizotricha n. gen. Trophosome: Hydrocladia piunately disposed, once, twice or 

 oftener bifurcating. Gonosome : Gonaugia springing from the hydrocladia 

 unifurcata n. Kerguelen 10 60 100 Fad. multifurcata n. Heald Island 75 Fad. 



Polyplumaria pumila n. 38 37' N., 28 30' W. 450 Fad. 



Heteroplon u. gen. Trophosome: Hydrocladia pinnate; hydrothecal internode with 

 the lateral nematophores moveable, and with a mesial fixed spine-like nematophore 

 below the hydrotheca. Gonosome not known. pluma n. BaB StraBe 38 

 40 Fad. 



Statoplea. Acanthocladium n. gen. Trophosome: Distal portion of branches desti- 

 tute of hydrocladia, whose places are taken by a long, spine-like appendage on 

 each internode. Gonosome : Phylactocarp replacing a hydrocladium and consisting 

 of a rhachis with two series of pinnately disposed, alternate, free ribs, each rib 

 carrying near its base a hydrotheca. Gonangia springing from the rhachis - 

 Huxleyi (Plumularia H. Busk. 9 59' S., 139 42' 0. und 8 56' S., 136 5' 0. 

 28 und 49 Fad. 



Aglaophenia Macg illiv ray i Busk. Philippinen 10 Fad. - - filicula n. 38 37' N., 28 

 30' W. 450 Fad. - attenuata n. Cap d. Guten Hoffnung 10-20 Fad. acacia 



