MARINE SHELLS. 77 



Pholas daetylus, L. Guernsey (Br. Con). 



P. Candida, L. Guernsey (Br. Con.) 



P. parva, Venn. Guernsey (Br. Con.) 



Teredo norvegiea, Speng. Alderney (Lukis, Marshall). Sark (Marshall). 



T. navalis, L. Alderney, in drift wood (Marquand). 



T. pedieellata, Quat. Guernsey, Alderney and Sark (Lukis). 



T. megotara, San. Guernsey (Lukis). Var. excisa, Jeff. Guernsey 

 (Marshall). Var. mionota, Jeff. Guernsey (Marshall). 



[The following species have also been found in drift wood in Guernsey by the 

 late Dr. Lukis : T. malleolus, Turt., T. bipinnata, Turt., T. excavata, Jeff., 

 T. bipartita, Jeff., T. spatha, Jeff., and T. cucullata, Norm.] 



SOLENOCONCHIA. 



Dentalilim entalis, L. Dredged alive between Guernsey and Herm 

 (Tomlin) . Alderney, abundant on the shell beach (Marquand) . 



D. tarentinum, Lam. Common in dredgings off Guernsey (Tomlin). 

 Alderney, in shellsand, rare (Marquand). 



GASTROPODA. 



Chiton faseieularis, L. Guernsey and Herm, common (Tomlin). Alder- 

 ney (Marquand). 

 C. diserepans, Bm. Herm (Dennis). Braye Bay, Alderney (Marquand). 



Widely distributed on the shores of Guernsey and Herm, but apparently 



becoming much rarer (Tomlin) . 

 C. eaneellatus, Sow. Guernsey and Herm (Marshall, Tomlin). Alderney 



(Marquand). Dr. Jeffreys says that " specimens from low water at Herm 



are larger than those dredged in the coralline zone." 

 C. SCabridus, Jeff. North-eastern parts of Guernsey, and south-western 



parts of Herm (Marshall). Guernsey and Herm, on the under side of big 



stones buried deeply in muddy sand (Tomlin) . 

 C. debilis, Gray. Off St. Martin's Point, Guernsey, 20 fms., a fine living 



specimen (Burkill). 

 C. einereus, L. Very common in dredgings, small (Tomlin). Var. Missoi, 



Payr. Guernsey, 20 fms. ; Herm, between tidemarks (Marshall). 

 C. marglnatus, Perm. Guernsey and Herm, very common (Tomlin). 



Alderney (Marquand) . 

 C. ruber, Lowe. Herm, rare (Tomlin). 



C. laBVis, Mont. Occasional on the shore in Guernsey and Herm ; not un- 

 common in dredgings on coralline ground ; always small compared with 



Scotch examples (Tomlin). Alderney (Marquand). Sark (Br. Con.) 

 Patella VUlgata, L. Abundant everywhere. Var. elevata, Jeff. Guernsey 



(Marshall). Alderney (Marquand). Sark (Br. Con.) Var. picla, Jeff. 



Guernsey (Tomlin). Alderney (Marquand). Var. intermedia, Knapp. 



Guernsey and Herm (Tomlin). Alderney (Marquand). Var. depressa, 



Penn. Guernsey (Marshall). Alderney (Marquand). Herm (Tomlin). 



Var. cmrulea, L. Guernsey and Herm (Tomlin). Alderney (Marquand). 

 Heleion pellueidum, L. Guernsey and Herm (Tomlin). Alderney, alive 



at low water (Marquand). Var. Icevis, Penn. Alderney (Marquand). 



Common at roots of Laminaria (Tomlin). Var. elongata, Jeff. Bordeaux 



Harbour, Guernsey (Marshall). 

 Teetura Virginea, Mull. Guernsey, very large (Jordan). Alderney, alive 



on shore, frequent (Marquand) . Common dredged, rare on shore (Tomlin) . 



Var. lactea, Jeff. Herm (Marshall). Var. conica, Jeff. Both varieties 



common on shore, reaching a large size (Tomlin). 



