Trochus cinerarius. 

 Lacuna divaricata. 

 Lacuna pallidula. 

 Littorina ohtusata. 

 Littorina rudis. 

 Littorina littorea. 

 Rissoa parva. 

 Rissoa proxima. 

 Cypvcsa euvopcea. 

 Purpura lapillus. 

 Buccinum undatum. 

 Fusus antiquus. 

 Nassa incrassata. 



312 Natural History of RunsimcJz. 



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. pvoxUna 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 edulis. 

 Turtonia minuta. 

 Lutravia elliptica. 

 Tapes piillastra (var. perforans). 

 Card ill m edule. 

 Saxicava riigosa. 

 Zivphoea (Pholas) crispata. 

 Patella vulgata. 



Helcion pellucida (with var. IcBvis). 

 Acmcsa 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) w^as 

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

 regarded as typical of the Cleveland boulder clay. 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 w^ere 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, 



