29 



Littorina (Neritoides) obtusata, L. Huntcliffe (D. F.), 



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

 Var. ncritiformis, Brown. Staithes (J. H ). 



Lacuna pallidula, Da. Cos. Redcar (J. H.). 



Lacuna divaricata, Fabr. Redcar (W. C. H). 



Skeneia planorbiS, Fabr. Redcar. " On sea-weeds 

 between tide marks " (D. F.). 



RiSSOia (TuPbella) parva. Da Cos. Redcar (AV. C. H.), 

 Saltburn (J. H.). 



var. interrupta, Ad. Saltburn (J. H.), Redcar (J. H.) 



Rissoia (Onoba) striata, Ad. Redcar (J.H.) (W. C. H.). 

 Rissoia (Alvania) punctura, Mont. Redcar (J. H). 

 Rissoia (Cingula) semistriata, Mont. Redcar (J. H.), 



Saltburn (J. H.). 



Barleeia rubra, Mont. Redcar (J. H.). 



Hydrobia (Peringia) stag-nalis, Bast. (H. ulvce, Penn). 



Tees Mouth [D. F.), a dead specimen dredged in Tees 

 Mouth (J. H.). 



Paludestrina Jenkinsi, Smith. Mr. A. Hann found this 

 species in a beck between Thornaby and jMiddlesbrough 

 in the early Spring of 1897, and later in the year he 

 found it in the same stream in profusion on Elodea 

 canadensis and Arundo phra(imites. All the specimens he 

 took were uncarinated forms He suggests that the 

 colony may have been imported with Baltic timber. 



ViviparUS Viviparus, L. Mr. T. A. Lofthouse obtained 

 one dead shell from pond -cleanings at Acklam. 



Acicula lineata, Drap. Airey Holme Wood (Dixon and 



Watson). 



Capulus hung-aricus, L. Dr. R. T. Manson, F.G.S., has 

 kindly sent for my inspection a small specimen of this 

 species which he found in 1898 on the sands between 

 Marske and Saltburn. Though the animal was not 

 contained in it when found it is a perfectly fresh shell, 

 measuring three-eighths of an inch in its longest 

 diameter. 



Natica (Naticina) pulehella, Risso [N. AideH, Forbes). 



Redcar (J H.), off Redcar (D. F ) 



Natica (Naticina) catena. Da. Cos. Saltburn (M. L. T.) 



