MARINE MOLLUSCA OF THE SCOTTISH NATIONAL ANTARCTIC EXPEDITION. 113 



Sub-order MYTILACEA. 



Family Mytilidse. 

 Mytilus edulis, Linn. 



,, magellanicus, Chemnitz. 

 ,, ovalis, Lamarck. 

 Philobryct meridionalis (Smith). 

 ,, quadrata (Pfefi'er). 

 ,, sublseuis, Pelseneer. 

 ,, wandelensis, E. Lamy. 



* Crenettct decussata (Mont.). 

 Modiolarca mesembrina, M. and St. 



Order PSEUDOLAMELLIBRANCHIATA. 



Family Pectenidw. 

 Pecten colbecki, Smith. 



multicolor, M. and St. 



? patagonicus, King. 

 ,, pteriolu, M. and St. 

 Amussium 18-liratum, M. and St. 



Family Limidiv. 

 Lima goughensis, M. and St. 



(Limatula) pyym&a, Philippi. 



Order EULAMELLIBRANCHIATA. 

 Sub-order SUBMYTILACEA. 



Family Carditidae. 



* Cardita congelascens, sp. u. 



, Smith, var. 12-costata nov. 



Family Astartidse. 

 * Astarte magellanica, Smith. 



Family Lucinidas. 

 ' Diplodonta lamellata, Smith. 

 Cryptodon fdlldandicus, Smith. 

 Cyamium antarcticum, Philippi. 

 ,, denticulatum, Smith. 

 ,, falklandicum, M. and St. 



Family Enjcinidse. 

 Lassea consanguinea (Smith). 

 Kellyia cycladiforrms, Desh. 



(ROY. SOC. EDIN. TRANS., VOL. XLVIII., 339.) 



