76 MAKINE SHELLS. 



Donax politUS, Toll. Guernsey (Marshall). Herin (Dennis). Common in 

 Darky Bay, Herm ; apparently nowhere else (Tomlin) . 



Amphidesma eastaneum, Mont. Herm (MacCulloch) . Var. subtrigona, 

 Monts., is the normal form at Guernsey and Herm (Marshall). 



Maetra SOlida, L. Alderney, young shells common (Marquand). Herm, 

 common (Tomlin). Var. truncata, Mont. Guernsey Harbour (Marshall). 



M. elliptiea, Brn. Common dredged, small (Tomlin). 



M. SUbtPUneata, Da C. Guernsey and Herm, not common (Tomlin) . Var. 

 striata, Brn. Guernsey (Marshall). 



M. Stultorum, L. Guernsey, rare (Tomlin). 



M. glauea, Bom. Guernsey and Herm, at unusually low tides (Lukis). 

 Herm, very rare ; confined to a bank of very fine sand which is rarely 

 uncovered by the tides (Marshall). 



Lutraria elliptiea, Lam. Alderney (Marquand). Herm (Dennis). Com- 

 mon at Herm on the muddy flats facing Guernsey (Tomlin). Var. 

 intermedia, Sow. Herm (Marshall). 



L. ODlonga, Chem. Herm (Dennis, Marshall). Alderney, rare, dead 

 (Marquand) . Bare at Herm ; with the last species (Tomlin) . 



Serobieularia prismatiea, Mont. Alderney, in shellsand (Marquand). 



In dredgings between Guernsey and Herm, rare (Tomlin) . 

 S. alba, Wood. Alderney, rare (Marquand). Dredged only (Tomlin). Var. 



oblong a, Marsh. Guernsey, rare (Marshall). 

 S. tenuis, Mont. Guernsey, abundant in Arnold's Pond and other brackish 



waters (LuMs). Herm, rare (Tomlin). 

 S. piperata, Bell. Herm, very rare (Marshall). 

 Soleeurtus eandidus, Ben. Channel Isles (Br. Con.) Herm (Dennis). 



Herm, rare, with Lutraria (Tomlin). Var. oblonga, Jeff. Guernsey 



(Lukis) . 

 Solen pellueidus, Penn. In dredgings off Guernsey, rare (Tomlin). 

 S. ensis, L. Guernsey (Lukis). Alderney (Marquand). Herm (Marshall). 

 S. Siliqua, L. Alderney (Marquand). Var. arcuata, Jeff. Belgrave Bay, 



Guernsey (Lukis). 

 S. Vagina, L. Guernsey (Hanley, Marshall). 

 Pandora insequivalvis, L. Guernsey (Marshall). Belgrave Bay, at 



extreme low water (Tomlin) . Alderney, valves only (Marquand) . 



Lyonsia norvegiea, Chem. In dredgings off Guernsey, rare (Tomlin). I 

 have a valve from the Herm beach (Marquand) . 



Thraeia papyraeea, Poli. Guernsey, rare (Marshall). Alderney, very 

 rare (Marquand). Var. villosiuscula, Macg. Guernsey (Marshall) . Herm, 

 common (Tomlin). 



T. distorta, Mont. Guernsey (Br. Con.) Bordeaux Harbour, rare (Tomlin). 

 Braye Bay, Alderney (Marquand). 



Corbula gibba, Oliv. Channel Isles (Br. Con.) 



Mya truneata, L. One perfect valve, Braye Bay, Alderney (Marquand). 



M. Binghami, Turt. Guernsey and Herm, also dredged (Tomlin). Alder- 

 ney, rare (Marquand). 



Saxieava PUgOSa, L. Channel Isles (Br. Con.) Var. arctica, L. Guern- 

 sey and Herm, not common (Tomlin) . Alderney, alive between tidemarks, 

 dead hi shellsand (Marquand). Var. cylindrica, Wood. Guernsey 

 (Marshall). 



Venerupis Irus, L. Guernsey, rare (Marshall). 



Gastroehsena dubia, Penn. Channel Isles (Br. Con.) Guernsey and 

 Herm, rare (Tomlin). 



