REPORT ON THE MONAXONIDA. 



lix 



Family III. D e s m A c i d o N i d je (p. 62). 



Subfamily 1. Esperellin^ (p. 62). 

 Genera — 



Esperella (p. 62). 

 Esjyeriopsis (p. 76). 

 Cladorhiza (p. 86). 

 Axonidernia (p. 96). 

 Chondrocladia (p. 99). 

 Desmacidon (p. 103). 



{Homoeodictya (p. 108)). 

 Artemisina (p. 112). 

 Fhelloderma (p. 113). 

 Sideroderma (p. 114). 

 lophon (p. 116). 

 Amphilectus (p. 123). 



Subfamily 2. Ectyonin^ (p. 128) 

 Genera — 

 Myxilla (p. 128). 

 Clathria (p. 146). 

 Rhaphidophlus (p. 151). 

 Plumohalichondria (p. 155). 



Plocamia (p. 157). 

 Acarnus (p. 159). 

 Echinoclathria (p. 159). 

 Agelas (p. 163). 



Echinodictyum (p. 164). 



Family IV. Axinellidje(p. 166) 



Genera — 

 Hymeniacidon (p. 166). 

 Phakellia (p. 169). 

 Cioccdypta {p. 173). 

 Acanthella (p. 176). 



Axinella (p. 178). 

 Raspailia (p. 188). 

 Dendropsis (p. 191). 

 Thrinacophora (p. 193). 



Suborder II. CLAVULHSTA (p. 196). 



Family I. S u b e r i t i d /E (p. 197) 

 Genera — 

 Suherites (p. 197). 

 Polymastia (p. 210). 

 Proteleia (p. 214). 

 Trichostemma (p. 216). 



Tentorium (p. 221). 

 Stylocordyla {]>. 222). 

 Quasillina (p. 225). 

 CTiona (p. 227). 



Family II. S p i R a s t r e l l i d ^ (p. 229). 



Genera — 

 Spirastrella (p. 229). | Latrunculia (p. 233). 



