FAUNA AND FLORA OF PLYMOUTH SOUND. 183 



Turritella (Lamk.). 



terebra (Linn.). 



var. nivea. In Mill Bay. Low spring tide. 



var. gracilis. In Mill Bay. Low spring tide. 

 Aclis (Loven). 



ascaris (Turt.). In Sound. 



supranitida (Wood). In Sound. 



gulsonae (Clark). Probably in Sound. 



unica (Mont.) Probably in Sound. 

 Aporrhais (Da Costa). 



pes-pelecani (Linn.). Shores of Mount Edgcumbe. Low-water. 

 Cerithium (Adan.). 



reticulatum (Da Costa). Probably in Sound. 



perversum (Linn.). Probably in Sound. 

 Cerithiopsis (F. and H.). 



pulchella (JefF.). Coraline zone. Sound. 



tubercularis (Mont.). Probably in Sound. 



barleei (Jeff.). Among trawl refuse. Plymouth. 

 Stilifer(Brod.). 



turtoni (Brod.). Attached to Echinus miliaris (Stewart). 

 Eulima (Risso). 



polita (Linn.). Probably in Sound. 



intermedia (Cantr.). Off Plymouth. 



distorta (Deshay.). Probably in Sound. 



subulata (Don.). Probably in Sound. Coralline zone. 

 Odostomia (Flem.). 



truncatula (JeflF.). In trawl refuse from off Plymouth. 



clavula (Lov.). Rare. Dredged Plymouth. 6 — 50 fathoms. 



lukisi (Jeff.). Among weeds at low-water. 



pallida (Mont.). In trawl refuse from off Plymouth. 



conoidea (Brocchi). Probably in Sound. 



acuta (Jeff.). Coralline zone, probably in Sound. 



rufa (Phil.). In trawl refuse off Plymouth. 



lactea (Linn.). 



insculpta (Mont.). Sand of coralline zones. 



interstincta (Mont.). In Bigbury Bay. 



decussata (Mont.). Probably in Sound. In coralline zone. 



excavata (Phil.). Probably in Sound. 



fenestrata (Forbes). Probably in Sound. Muddy ground. 7 — 12 fathoms. 



plicata (Mont.). Probably in Sound. 



rissoides (Hani.). Probably in Sound. 



scalaris (Phil.). Probably in Sound. 



unidentata (Mont.). Probably in Sound. 

 Otina (Gray.). 



Otis (Turt.). On rocks under Hoe. 

 Lamellaria (Mont.). 



perspicua (Linn.). Dredged in Sound. 

 Natica (Adan.). 



catena (Da Costa). Whitsand Bay. 



alderi (Forbes). Probably in Whitsand Bay. 

 Adeorbis (S. Wood). 



subcarinatus (Mont.). Whitsand Bay. In 12 fathoms. 



montacuti (Forbes). In Sound. 

 Cypraea (Linn.). 



europjea (Mont). Common. 

 Ovula (Brug.). 



patula (Penn.). Probably in Sound. 

 Marginella (Lamk.), 



laevis (Don.). Probably in Sound. 



