MARINE SHELLS. 81 



Jeffreysia diaphana, Aid. Channel Isles (Br. Con.) Guernsey (Marshall). 



Alderney, rare (Marquand). 

 J. opalina, Jeff. Guernsey and Sark, in rockpools among Corallina (Barlee). 



Very abundant at Guernsey (Marshall). Alderney, common on small 



seaweeds in rockpools (Marquand). 

 Skenea planorbis, Fair. Guernsey and Herm, common in the littoral 



zone (Tomlin). Alderney, abundant in rockpools (Marquand). Var. 



trochiformis, Jeff. Guernsey (Marshall). Var. metadata, Jeff. Guernsey 



and Herm (Tomlin). Alderney (Marquand). Var. hyalina, Jeff. Guern- 

 sey (Tomlin). Alderney (Marquand). 

 HomalOgyra atomus, Phil. Guernsey (Marshall). Alderney, common in 



rockpools (Marquand). Herm, in the littoral zone (Tomlin). Var. vitrea, 



Jeff. Guernsey (Marshall). 

 H. rota, F. § H. Guernsey (Jeffreys, Marshall). Herm (Marshall). 

 Cseeum tPaehea, Mont. Guernsey, rare (Barlee, Marshall). 

 C. glabrum, Mont. . Guernsey (Marshall). Alderney, very rare in shellsand 



(Marquand) . In dredgings (Tomlin) . 

 Turritella terebra, L. In dredgings between Guernsey and Herm, rare 



(Tomlin). 



Truneatella truneatula, Drop. Guernsey (Lukis, Marshall). Sark 



(Marshall). 

 Sealaria Turtonse, Turt. Guernsey (Lukis, Marshall). 



S. Communis, Lam. Guernsey and Herm, at low spring tides, among 



Zostera (Marshall). Alderney, rather common on the shell beach, rare 



elsewhere (Marquand). Herm, once or twice alive (Tomlin). 

 S. elathratula, Ad. Guernsey (Marshall). Alderney, a few much-worn 



shells in the shellsand (Marquand). In dredgings, dead and small, not 



uncommon ; alive rare, but very fine (Tomlin). 

 Aelis Ulrica, Mont. Guernsey (Barlee and Jeffreys). Alderney, very rare 



(Marquand). Sark and Herm (Marshall). Very rare in dredgings 



(Tomlin). 

 A. asearis, Turt. Guernsey (Lukis, Barlee and Jeffreys). Sark and Herm 



(Marshall). 

 A. SUpranitida, Wood. Guernsey (Hanley, Lukis and Jeffreys). Herm 



(Marshall). In dredgings, and on Herm beach, very rare (Tomlin). 



A. Gulsonse, Clark. Guernsey (Barlee and Jeffreys). Var. temdcula, Jeff. 

 Guernsey (Marshall), 



OdOStomia minima, Jeff. Guernsey, in dredged sand (Waller). Alderney, 

 very rare (Marquand). Guernsey and Sark, 15-20 fms. (Marshall). 



0. niVOSa, Mont. Channel Isles (Br. Con.) Alderney (Marquand). In 

 dredgings (Tomlin). 



0. elavula, Lov. Guernsey, 18 fms. (Marshall). 



0. Lukisi, Jeff. Guernsey (Jeffreys, Marshall). Alderney, rare (Marquand). 

 Herm (Marshall). 



0. albella, Lov. Guernsey and Herm, living ; and in dredgings (Tomlin). 

 Alderney, common under stones and in rockpools between tidemarks 

 (Marquand). Var. subcglindriea, Marsh. Guernsey (Marshall). 



0. rissoides, San. Channel Islands (Marshall) . Alderney (Marquand). In 

 dredgings (Tomlin). Var. alba, Jeff. Guernsey (Jeffreys). Sark 

 (Marshall). Var. gla.brata, F. & H. Guernsey (Marshall). 



0. pallida, Mont. Guernsey (Marshall). Alderney (Marquand). Herm 

 beach, and in dredgings (Tomlin). Var. crassa, Thomp. Channel Islands 

 (Marshall). Var. angusta, Jeff. Guernsey (Jeffreys, Marshall). In 

 dredgings (Tomlin). 



C 



