82 JOURNAL OF CONCHOLOGY, VOL. ID, NO 3, JULY, I90I. 



especially fine at Port St. Mary. Some hundreds of shells have been 

 examined, and we find that a long series may be picked out with the 

 type and var. g/obosa as extremes. A pretty form occurs sparingly in 

 rock crevices with broad chocolate coloured bands. All search for 

 var. jiigosa has failed. 



V. sulcata Leach. — Fairly plentiful at Port St. Mary. 

 V. patula Thorpe. — Abundant, 



V. globosa Jeffr. — Plentiful and very fine at Port Erin and Port 

 St. Mary. 



V. similis Jeffr.- — Very scarce on rocks at Fleshwick. This is a 

 most unsatisfactory variety, and should be expunged from the British 

 List. 



L. littorea L. 



Rissoa parva (DaC). 



V. interrupta Ad. — Dredged alive in quantity in sea-weeds close 

 to shore between the Biological Station and Bradda Head. 



R. inconspicua Alder. 



R. violacea Desm. 



R. (Alvania) cancellata (Da.C). — One broken specimen from 

 deep water on the north coast (Forbes, Mai. Mon., p. 18, and Jeffr., 

 B.C., vol. 4, p. 10). Taken alive, Port Erin. 



R. (A.) reticulata Mont.— Dredged alive. 



R. (A.) calathus F. & H.— "Lsle of Man"(Packe, vide Jeffr., 

 B.C., vol. 4, p. 11). 



R. (A.) punctura Mont. 



R. (A.) abyssicola Forbes. — Dredged in tenacious mud (79 

 faths.), 14 mites N.W. of Port Erin, and in company with Nucula 

 sulcata. 



R. (Manzonia) zetlandica (Mont.). 



R. (M.) costata Ad. 



R. (Zippora) membranacea Ad. 



R. (Onoba) striata Ad. 



R. (Setia) obtusa Cantraine (soluta). 



R. (Cingula) semistriata Mont. 



R. (C.) trifasciata Ad. (cingillus). — Abundant at the Break- 

 water, Port Erin ; Bay-ny-Carrickey (Archer). Jeffreys says (B.C., 

 vol. 4, p. 49) : — " Every shade and gradation, as regards the colour 

 and bands, may be observed." Why, then, institute such varieties as 

 rupestris and grap/ii'ca ? There is, unfortunately, amongst man}' 

 authors, both British and continental, a mania for making new varieties 

 of the most trifling nature. These can only lead to confusion, as in 

 most instances the specimens are quite unattainable to workers. 



Paludestrina stagnalis (Bast.) (Hydrobia ulvae). — Muddy 

 places on the shore, near (\^stletown (Mai. Mon., p. iS). 



