00 MR JAMES COSMO MELVILL AND MR ROBERT STAN DEN ON THE 



LIST OF SPECIES CONTAINED IN THE "SCOTIA" COLLECTIONS. 

 A. REGIO ANTARCTICA INCLUDING GOUGH ISLAND. 



Class GASTEROPODA. 



Order AMPHINEURA. 

 Sub-order POLYPLACOPHORA. 



Callochiton illuminatus (Eeeve). 

 Tonicia atrata (Sowb.). 



Order PROSOBRANCHIATA. 

 Sub-order DIOTOCARDIA. 



Family Acmwidse. 

 Acmsea ceciliana, Orbigny. 



Family PateUidse. 



Patella senea, Martyn, var. deaurata, Gmel. 

 ,, fueyiensis, Reeve. 

 ,, polaris, Hombr. and Jacq. 



Section Zygobranchiata. 



Family Fissurellidse. 

 Fissurella oriens, Sow. 

 ,, picta, Gmel. 

 Tugalia antarctica, sp. n. 



Section Azygobranchiata. 



Family Trochidie. 

 Photinula expansa (Sow.). 



t&niata (Wood). 



,, violacea (King). 

 Valvatella antarctica (E. Lamy). 



Sub-order MONOTOCARDIA. 

 Section (a) Ptenoglossa. 



Family lanthinidse. 



lanthina exigua, Lamarck. 



(ROY. soc. EDIN. TRANS., VOL. XLVI., 120.) 



