CHASTER AND HEATHCOTE : IMOLLUSCA OF OBAN. 293 



B. turricola, Mont. [var. rosea, Jeffreys.] x\ few specimens 

 dredged alive and dead. Tlie var. rosea, Sars., occurs with 

 the type. 



Neptunea antiqua, L. {Fusus aniiquus). [A.M.N. ; scarce 

 and small, white and dark vars., R.D.D. MS.]. Small 

 immature specimens were dredged in Kerrera Sound. The 

 inside of the mouth is of a rich orange-yellow. 



Sipho gracilis, Da Costa. {Fusus gracilis). [R.D.D. MS.]. 

 Two dredged alive off Lismore. Mr. tl. K. Jordan says 

 of them, in lit. : ' They are acuminate specimens, differing 

 from the var. coiivohita in the whorls being less rounded.' 

 The nucleus in the specimens of this species and the last 

 is less globular than usual, being compressed so as to pro- 

 duce no enlargement. 



Buccinum undatum, L. In Kerrera Sound the type is fairly 

 common, and with it were taken one or two remarkably 

 thin and translucent specimens intermediate between the 

 type and the var. pelagica. King. A small solid form 

 is common under stones on the shore near Oban, the 

 mouth being generally tinged more or less deeply with brown 

 or purple. This Mr. H. K. Jordan refers to the var. 

 littoralis. King. 



Nassa incrassata, Strom. A few dredged dead. 



N. reticulata, L. [R.D.D. MS.] This is common on sandy 

 shores in the Clyde district (Brown). 



Murex erinaceus, L. [A.M.N.] Dead and worn specimens 

 dredged. 



Trophon truncatus, Strom. Fine examples dredged and 

 smaller ones taken in great abundance under stones in the 

 lower part of the littoral zone near the ferry to Kerrera. 

 The number of ribs varies very greatly, ranging from four- 

 teen to twenty-two- on the body whorl. 



** Trophon muricatus, Mont. A dead but fresh speci- 

 men dredged. It has fourteen ribs and twelve spiral lines 

 on the body whorl. 



