Qiiarterly Journal of ConcJiolog)'. 279 



Trochus millegranus, Phil. 

 Lacuna divaiicata, (Fabr.) 

 Littorina obtusata, (Lin.) 



„ rudis, (Alatou.) 



„ „ var. tenebrosa, {Jllonf.) 



„ littorea, (Lin.) 

 ^ Rissoa parva, (Da Costa). 

 „ inconspicua, Alder. 

 „ membranacea, (Adams). 

 „ striata, (Adams). 

 Hydrobia ulvae, {Penn.) 

 Turritella terebra, {Lin.) 

 Odostomia conoidea, (BroccJii). 



„ unidentata, Mont. 



Velutina laevigata, Ptnn. 

 Trichotropis borealis, Brod. & Sow. 

 Aporrhais pes-pelicani, (Lin.) 

 Purpura lapillus, (Lin.) 

 Buccinum undatum, Lin. 

 Murex erinaceus, Lin. 

 Trophon Barvicensis, (Johns t.) 



„ truncatus, (Strom.) 

 Fusus antiquus, (Lin.) 

 Nassa incrassata, (Strom). 

 Defrancia linearis, ( Alont.) 

 Pleurotoma striolata, Phil. 



„ septangularis, (Mont.) 



„ ruia, ^ Alont.) 



„ turricula, (Mont.) 



Cypraoa Europcea, Mont. 



Only a very few Nudibranchiata were observed, and those 

 were common species. 



The following MoUusca, though not obtained during my last 

 visit, are also to be found in the neighbourhood of Oban. Many of 

 them have been previously dredged by myself in Loch Linnhe, and 

 the rest have been recorded on reliable authority — found by 

 Jeffreys, Barlee, Bedford, &c. : — 



Pecten Testae, Bivona ; Nucula sulcata, Broivn, and N. 

 nitida, G. B. Sozu ; Kellia suborbicularis_, (Jilont.) ; Lepton squa- 



