Trochus cinerarius. 

 Lacuna divaricata. 

 Lacuna pallidula. 

 Littorina obtusata. 

 Littorina rudis. 

 Littorina littorea. 

 Rissoa parva. 

 Rissoa proxima. 

 Cyprcea europcea. 

 Purpura lapillus. 

 Buccinum undatum. 

 Fusus antiqims. 

 Nassa- incrassata. 



312 Natural History of Runswick. 



between which and R. proxima there appears to be a good deal 



of confusion. Some specimens have finer and some coarser 



striae, but otherwise they are similar. Jeffrey doubted whether 



R. proxima was a good species. The subject wants thorough 



investigation, and at present the specimens, even in some of 



the best collections, are not always satisfactory. Curiously 



enough the typical Rissoa striata was not found in Runswick 



Bay ; but it is almost certain that it occurs, as it abounds along 



the Yorkshire coast. 



The following is a complete list of species found :— 



Chiton cinereus. 



Chiton ruber. 



Anomia ephippium. 



Mytilus edidis. 



Turtonia i/n'uiita. 



Lutraria elUptica. 



Tapes ptdlastra (var. perforans). 



Cardium edule. 



Saxicava riigosa. 



Zirphoea [Pholas] crispata. 



Patella vidgata. 



Helcion pellucida (with var. Icevis) 



AcnicBa testudinalis. 



Acmcea virginea. 



Dr. W. G. Smith writes : — ' The number of botanists present 



was not very large, but observations were extended over the 



week-end, and, although it is not possible in a short note to 



indicate the bearing of the observations on the history of the 



Cleveland vegetation, a considerable amount of work was 



accomplished. Special attention was paid to the woods of the 



coast region, including Mulgrave Woods and those in the steep, 



narrow valleys of Runswick Bay. One feature of interest is 



that Birch is not a conspicuous tree on the boulder clay, and in 



none of the woods was Birch so abundant as it is in the woods 



of the moorland edge ; the English Maple {Acer campestre) was 



noted as common in all the woods examined, and it must be 



regarded as typical of the Cleveland boulder claJ^ The scrub 



and grassy slopes of the boulder clay was also carefully 



examined for comparison with the soils over the natural rock. 



Amongst the typical clay plants, Fleabane, Wood Vetch, Hemp 



Agrimony, and the Large Horsetail were conspicuous, whereas 



these were absent over the drier soils over the Lias. The 



casuals of the unkempt gardens of Runswick also attracted 



much attention. The most noteworthy record from the floristic 



side was Vicia bithynica found by one of the members of the 



camping party who devoted their energies mainly to mosses.' 



Naturalist, 



