IV 



THE VOYAGE OF H.M.S. CHALLENGER. 



Family IIL Desmacidonidae. 

 Subfamily 1. Esperellinas — continued. 



Clwndrodadia, TVyville Thomson, 

 Meliiderma, d. gen., 

 Desmacidon, Bowerbank, 

 Artemigina, Vosmaer, . 

 Phelloderma, Eidley and Dendy, 

 Sideroderma, Eidley and Dendy, 

 loplion. Gray, . 

 Ampliilectus, Vosmaer, 

 Subfamily 2. Ectyoninae, 



Myxilla, Schmidt, 

 Clathria, Schmidt, 

 Rhaplndophlus, Ehlers, 

 Plu'/nohah'chondria, Carter, 

 Plocamia, Schmidt, 

 Acamus, Gray, 

 Eeliinoclathria, Carter, 

 Affelas, Duchassaing and Michelotti, 

 EcMnodidijum, Eidley, 

 Family IV. Axinellidse, 



Hymeniacidon, Bowerbank, 

 PJialellia, Bowerbank, 

 Ciocalypta, Bowerbank, 

 AeantheUa, Schmidt, . 

 Axinella, Schmidt, 

 Paspailia, Nardo, 

 Dendropsis, Eidley and Dendy, 

 Tlirinacopliora, Eidley, 

 Suborder II. Clavclixa, 

 Family I. Suberitidae, 



Suherites, Xardo, 

 Polymastia, Bowerbank, 

 Protdeia, Dendy and Eidley, 

 Trichostemma, M. Sars, 

 Tentorium, Vosmaer, . 

 Styloconlyla, Wyville Thomson, 

 Quasillina, Norman, . 

 Cliona, Grant, 

 Family II. S p i r a s t r e 1 1 i d se, . 



Spirastrella, Schmidt, . 

 Latrunculia, Bocage, . 



GEOGRAPHICAL AND BATHTMETEICAL DISTEIBUTION, 



APPENDIX — Synonymy of the Spicular Terminology, 



INDEX, ....... 



P.\GE 



99 



102 



103 



112 



113 



lU 



IIG 



123 



128 



128 



li6 



151 



155 



157 



159 



159 



163 



164 



166 



166 



169 



173 



176 



178 



188 



191 



193 



196 



197 



197 



210 



214 



216 



221 



222 



225 



227 



229 



229 



233 



241-263 



. 264 



265 



