MARINE MOLLUSCA OF THE SCOTTISH NATIONAL ANTARCTIC EXPEDITION. 339 
Sub-order MYTILACEA. 
Family Mytilide. 
Mytilus edulis, Linn. 
y magellanicus, Chemnitz. 
vA ovalis, Lamarck. 
Philobrya meridionalis (Smith). 
‘ quadrata (Pfeffer). 
. sublxvis, Pelseneer. 
sc wandelensis, H. Lamy. 
* Crenella decussata (Mont. ). 
Modiolarca mesembrina, M. and St. 
Order PSEUDOLAMELLIBRANCHIATA. 
Family Pectendz. 
Pecten colbecki, Smith. 
» multicolor, M. and St. 
» + patagoncus, King. 
»  pteriola, M. and St. 
Amussium 18-liratum, M. and St. 
Family Limide. 
Inma goughensis, M. and St. 
, (Limatula) pygmexa, Philippi. 
Order EULAMELLIBRANCHIATA. 
Sub-order SUBMYTILACEA. 
Family Carditede. 
Cardita congelascens, sp. n. 
* * 
y pallida, Smith, var. 12—costata nov. 
Family Astartide. 
* Astarte magellanica, Smith. 
Family Lucinde. 
* Diplodonta lamellata, Smith. 
Cryptodon falklandicus, Smith. 
Cyamium antarcticum, Philippi. 
we denticulatum, Smith. 
a falklandicum, M. and St. 
Family Erycunde. 
Lasxa consanguinea (Smith). 
Kellyia cycladiformis, Desh. 
