184 PRELIMINARY REPORT UPON THE 



Defrancia (Mill.). 



leufroyi (Mich.). Probal)ly in Sound. 



teres (Forbes). Dredged. 15 — 85 fathoms. 



gracilis (Mont.). Not uncommon on coast in coralline zone. 



linearis (Mont.). Common on coast in laminarian and coralline zones and 

 deep water. 



reticulata (Ren.). In Sound. Coralline zone. 



purpurea (Mont.). Doubtless at mouth of Sound. 

 Pleurotoma (Lamk.). 



attenuata (Mont.). On coast. Coralline zone. 



costata (Don.). Low-water mark in pools in Sound. 



brachystoma (Phil.). On muddy sand. 10 — 60 fathoms. 



nebula (Mont.). Common in sand, low-water. 



var. elongata. In deep water. 



rufa (Mont.). 



var. cranchii. 



striolata (Phil.). Probably off Sound. 

 Purpura (Brug.). 



lapillus (Linn.). Common in Sound, 



var. several. 

 Buccinum (Linn.). 



undatum (Linn.). Common in Sound and estuaries. 

 Nassa (Lamk.). 



reticulata (Linn.). In the Sound between tide-marks. Common. 



incrassata (Strom.). Dredged frequently in Sound. 



pygmsea (Lamk.). Coralline zone, probably in Sound. 

 Murex (Linn.). 



erinaceus (Linn.). In the Sound. 



aciculatus (Lamk.). Dredged in coralline zone. Common. 

 Trophon (de Mont.). 



muricatus (Mont.). Muddy sand, coralline zone. On coast. 

 Fusus (Brug.). 



antiquus (Linn.). Perhaps in Sound. 



buccinatus (Lamk.). Dredged in deep water. 



gracilis (da Costa). In the Sound. 



Pleurohranchia. 

 Cylichna (Lov.). 



acuminata (Brug.). In trawl refuse. Plymouth. 



umbilicata (Mont.). Probably near Plymouth. 



cylindracea (Penn.). Probably near Plymouth. 

 Utriculus (Brown). Laminarian zone. 



mammillatus (Phil.). Probably near Plymouth. 



trunculatus (Brug.). Doubtless at Plymouth. 

 Actaeon (de Mont.). 



tornatilis (Linn.). Whitsand Bay. 

 Bulla (Klein). 



hydatis (Linn.). In Sound. 



utriculus (Broc). In Sound. Muddy sand. 

 Scaphander (De Mont.). 



lignarius (Linn.). In the Sound. 

 Philine (Ascanius). 



catena (Mont.). Probably in Sound. 



punctata (Clark). Whitsand Bay. 



pruinosa (Clark). Dredged off Plymouth. 



aperta (Linn.). Probably Whitsand Bay. 

 Aplysia (Linn.). 



punctata (Cuv.). Whitsand Bay. On rocks. 



depilans (Linn.). Mouth of Sound. 5 fathoms. 



