224 l^i"- W. Weltner: Bericht über die Leistungen 



Uuterfam. Chalininae. 



Gatt. PachychaJina. Clialina. Siphonochalina. 



Farn. Heterorrhaphidae. Megasciera of various froms; microsclera 

 comniouly preseut, but never chelae. 

 Unterfam. Pliloeodictyinae Gart. 



Gatt. Rliizochalina. Oceanapia. 

 Unterfam. Gelliinae. 



Gatt. Gellius. Gelliodes. Toxochalina. 

 Unterfam. Tedauiinae. 



Gatt. Tedauia, Tracliytedania. 

 Unterfam. Desmacelliuae. 



Gatt. Desmacella. 

 Unterfam. Hamacantliinae. 



Gatt. Vomerula. 



Farn. Desinacidonidae. Megasciera of various forms, usually mouactinal- 

 Microsclera always present and always includiug chelae. 

 Unterfam. Esperellinae. 



Gatt. Esperella. Esperiopsis. Cladorrhiza. Axonideima. Chon- 

 drocladia. Meliiderma, Desmacidon (mit Untergattung 

 Homoeodictya). Artemisina. Phelloderma. Sideroderma 

 Jophon. Amphilectus. 

 Unterfam. Ectyoninae. 



Gatt. Myxilla. Clathria. Rhaphidophlus. Plumohalichondria. 

 Plocamia. Acarnus. Echinoclathria. Agelas. Echino- 

 dictyum. 



Farn. Axinellidae. Skeleton typically non-reticulate ; consisting of as- 

 cendiug axes of fibres from which arise subsidiary fibres radiating 

 to the surface. Fibres typically plumose. Megasciera chiefly 

 styli to which oxea and (or) strongyla may be added. Microsclera 

 rarely present, never chelae. 



Gatt. Hymeniacidon. Phakellia. Ciocalypta. Acanthella. Axi- 

 nella. Raspailia. Dendropsis. Thrinacophora. 

 Untere rdn. Clavulina Vosm. Sponge typically corticate. Skeleton 

 usually niore or less radiately arranged, with a dermal crust of 

 spicules which may be either of the same form as in the main 

 skeleton or of a special form (spined spiculae etc.) Megasciera typi 

 cally tylostylote. Microsclera, when present, belonging almost in 

 variably to the stellate group; never chelae or sigmata Spougin 

 usually absent. 

 Farn. Suberitidae. No microsclera present. 



Gatt. Suberites. Polymastia. Proteleia. Trichostemma. Ten- 

 torium. Stylocordyla. Quasilliua. Cliona. 

 Fani. Spirastrellidae. Microsclera present; typically forming a more 

 or less continous dermal crust. 

 Gatt. Spirastrella. Latrunculia. 



