120 MR JAMES COSMO MELVILL AND MR ROBERT STANDEN ON THE 



LIST OF SPECIES CONTAINED IN THE "SCOTIA" COLLECTIONS. 

 A. Regio Antarctica — including Gough Island. 



Class GASTEROPODA. 



Order Amphineura. 



Sub-order polyplacophora. 



Callochiton illuminatw (Reeve) 

 Tonicia atrata (Sowb.). 



Order Prosobranchiata. 



Sub-order diotocardia. 



Family Acmseidse. 

 Acmsea ceciliana, Orbigny. 



Family Patellidae. 

 Patella senea, Marty n, var. deaurata, Gmel. 

 ,, fuec/iensis, Reeve. 

 ,, polaris, Hombr. and Jacq. 



Section Zygobranchiata. 



Family Fissurellidse. 

 Fissurella oriens, Sow. 

 ,, picta, Gmel. 

 Tugalia antarctica, sp. n. 



Section Azygobranchiata. 



Family Trochidse. 

 Photinula expansa (Sow.). 

 ,, tseniata (Wood). 

 ,, violacea (King). 

 Valvatella antarctica (E. Lamy). 



Sub-order monotocardia. 



Section (a) Ptenoglossa. 



Family lanthinidse. 

 lanthina exigua, Lamarck. 



