144 



THE NAUTILUS. 



Velutina zonata, Gould. Rarer 

 than V. Ixvigata, 



Crucibulum striatum, Say. Rare 

 alive. Common dead. 



Littorina littorea, Linn. 



Littorina rudis, Donovan. 



Littorina palliata, Say. 



Lacuna vincta, Montagu, on Zos- 

 tera marina. 



Lacuna vincta, var. fusca. On 

 large Laminaria. 



Cinaulaaculeus, Gould. Common 

 at base offucus. 



Cingula carinata, Mighels & 

 Adams. Rare. A few speci- 

 mens in sandy mud, ten 

 fathoms. 



Skenea platiorbis, Fabricius. 



Amnicola limosa, Say. 



Trichotropis borealis, Broderip 

 & Sowerby. 



Purpura lapillus, Linn. Very 

 abundant ; var. imbricata is 

 also common. 



Buccinum undatum, Linn. 



Chrysodomus decemcostatus, Say. 

 Rather uncommon. 



Tritonofusus stimpsoni, Morch. 

 Rare. 



Tritonofusus pygmxus, Stimpson. 



Nassa trivittata, Say. 



Nassa obsoleta, Say. 



Columbella rosacea, Gould. Rare. 



Bela incisula, Verrill. 



Bela nobilis, Moller. One speci- 

 men. 



Bela harpularia, Couthouy. 



Bela decussata, Couthouy. Rare, 

 in company with B. incisula. 



Retusa gouldii, Couthouy. Rare 



Retusa perfenuts, Might-Is. 



Cylichna alba, Brown. 



PULMONIFEBA. 



Zoogenites harpa, Morse. Very 

 common. 



Vallonia pulchella, Miiller. 



Polygyra fraterna, Say. 



Strobilops labyrinthica, Say. 



Bifidaria pentodon, Say. 



Pupilla muscorum, Linn^. 



Vertigo gouldii, Binney. 



Cochlicopa lubrica, Miiller. 



Vitrea indentata, Say. One im- 

 mature specimen. 



Vitrea. hammonis, Strom. 



Zonitoides arborea, Say. 



Pyramidula alternata, Say. 

 Pyramidula cronkhitei anthonyi, 



Pilsbry. 



Zonitoides exiguits, Stimpson. 

 Zonitoides minuscula, Binney. 



Extremely rare. 

 Carychium exiffuum, Say. 

 Helicodiscus pareltelus, Say. 

 Aplexa hypnorum, Linn. 

 Succinea retusa, Lea. 

 Succinea avara, Say. 

 Succinea ovalis var. totteniana, 



Lea. 



