144 



THE NAUTILUS. 



Velutina zonata, Gould. Rarer 

 than V. laevigata. 



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. 



Oingulaaculeus, Gould. Common 

 at base of fucus. 



Cingula carinata, Mighels & 

 Adams. Rare. A few speci- 

 mens in sandy mud, ten 

 fathoms. 



Skenea planorbis, Fabricius. 



Amnicola limosa, Say. 



Trichotropis borealis, Broderip 

 & Sowerby. 



Purpura lapillus, Linn. Very 

 abundant ; var. imbricata is 

 also common. 



Buccinum undatum, Linn. 



Chrysodomus decern costatus, Say. 

 Rather uncommon. 



Tritonofusus stimpsoni, Mb'rch. 

 Rare. 



Tritonofusus pygmseus, Stimpson. 



Nassa trivitlata, Say. 



Nassa obsoleta, Say. 



Columbella rosacea, Gould. Rare. 



Bela incisula, Verrill. 



Bela nobilis, Moller. One speci- 

 men. 



Bela harpularia, Coutliouy. 



Bela decussata, Couthouy. Rare, 

 in company with B. incisula. 



Retusa gouldii, Couthouy. Rare. 



Retusa pertenuis, Mighels. 



Cylichna alba, Brown. 



PULMONIFERA. 



Zoogenites harpa, Morse. Very 

 common. 



Vallonia pulchella, Muller. 



Polygyra fratern a, Say . 



Strobilops labyrinthica, Say. 



Bifidaria pentodon, Say. 



Pupilla muscorum, Linne\ 



Vertigo gouldii, Binney. 



Cochlicopa lubrica, Muller. 



Vitrea indentata, Say. One im- 

 mature specimen. 



Vitrea hammonis, Strom. 



Zonitoides arborea, Say. 



Pyramidula alternata, Say. 

 Pyramidula cronhhitei anthonyi, 



Pilsbry. 

 Zonitoides exiguus, Stimpson. 

 Zonitoides minuscula, Binney. 



Extremely rare. 

 Carychium exiguum, Say. 

 Helicodiscus parellelus, Say. 

 Aplexa hypnorum, Linn. 

 Succinea retusa, Lea. 

 Succinea avara, Say. 

 Succinea ovalis var. totteniana. 



Lea. 



