28 



Sipho gracilis, Da Cos. Saltburn (M. L. T.), Tees Mouth 

 (M. L. T.). 



Sipho (TpitOnofuSUS) islandiCUS, Chemn. OS Redcar, 

 " One living and one dead shell have come into our 

 possession from the deep water boats " (D. F.) (W. C. H.), 

 Staithes, dead shells (J. H.). 



BuCCinum undatum, L. Redcar. " With all its varieties 

 it is very abundant here among the rocks at low water 

 mark, whilst the thin variety is found at the eighth buoy 

 in the Tees, on a muddy bottom " (D F.) (J. H), 

 Saltburn (J. H.), Staithes (J. H.). 



NaSSa (Hima) incrassata, MliU. Redcar. " Very abundant" 

 (D. F.) (J. H ), Dredged in Tees Mouth (J. H.), Saltburn 

 common (M. L. T.). 



Ocinebra erinacea, L. Ferguson mentions that dead and 

 worn shells have been found at Redcar, which were 

 probably brought into the Tees with ballast. 



Purpura (Polytropa) lapillus, L. Redcar. " White and 

 yellow varieties very common on all our rocks " (D. F.) 

 (J. H.), Saltburn (J. H..\ Staithes (J. H.). 



Trivia europaea, Mont. Redcar. " This shell is most 

 abundantly thrown up on our sands, and is found alive 

 among the little zoophyte-clad caverns at spring tides. 

 We occasionally find Ci/pnea arctica" (D. F) (J. H.), 

 Saltburn, common (M. L. T.). 



Chenopus pes-pelicani, L. Redcar (W. C. H), off Redcar 



" from the fishermen's lines " (D. F.). 



Bittium reticulatum, Da Cos. Ferguson says it has 

 frequently l^een found on the beach at Redcar. 



Turritella terebra, L. Off Redcar. " Brought in pretty 

 plentifully by the fishermen " (D. F.), Redcar, dead 

 (J. H.), Saltburn (M. L. T.). 



Littorina littorea, L. Redcar. " Very common ; a red 

 variety is occasionally found in company with the black 

 one" (D. F.) (J. H.), Saltburn, common (M. L T.), 

 Staithes (J. H.). 



Littorina rudis, Maton. Huntcliffe (D. F ;, Saltburn, 

 common (M. L. T.), Staithes (J. H.). 



var. saxatilis, Jolmst. Staithes (J. H.). 



var. jugosa, ]\Iont. Staithes (J. H.). 



