7 ; > 



NOTES MOLLUSCA. 



Razorbill. Alca torda. 



Common ; breeds. Occurs in diminished numbers all winter, 

 as well as the Guillemot. 

 Guillemot. Lomvia troile. 



Common on the Frith ; breeds. A great many of these 

 birds, as well as Razorbills, are cast ashore after winter storms. 

 Ringed Guillemot. Lomvia la cry mans. 



i have seen an occasional example. It probably occurs 

 wherever the last named is common. 

 Little Auk. Mergulus alle. 



Very rare. I have seen two of these birds only in winter. 

 Puffin. Fratercula arctica. 



Decidedly a rare bird on the Solway, and only occurring well 

 out at sea. I have not met with it breeding. A specimen 

 occurs in winter occasionally, as well as a few in summer. 



Probably there are many birds that have occurred, some of them 

 perhaps frequently, but which are not reported in the foregoing list. 

 It must be remembered in cases of this kind that I have, as a rule, 

 only recorded what I have seen. 



MOLL USC A. 



Marine Shells at Whitby. — In the Naturalist, p. 349, I see it recorded 

 that the Rev. W. C. Hey found Trochus cinereus at Whitby. Should this not 

 rather be T. cinerarius, a common littoral shell ? T. cinereus is in fact only known 

 as British as a fossil, except that a single specimen was dredged in 1,230 fathoms 

 off Galway, Ireland, with Trochus minutissimus and Area glacialis. Very many 

 species of shells have been recorded for Yorkshire that are not mentioned in 

 Mr. Hey's list of Yorkshire marine shells — for instance, Odostomia nitidissima, 

 Bulla utriculus, and among the Nudibranchs Doris depressa. — T. D. A. Cockerell. 



[It should not be forgotten that Mr. Hey's paper was simply a record of his 

 own captures and of notes from private collections, and did not profess to include 

 all the Yorkshire marine shells. As to the Trochus, Mr. Hey tells, us that if he 

 erred he did so on good authority, for in Sowerby's British Shells, in the explana- 

 tion of plate xi., we read : ' Fig. 17, T. cinereus Linn. — T. lineatus, T. perforatus, 

 etc. — -Brit. co. generally, C. Littoral, small umbilicus.' — Eds.] - 



Varieties of Bythinia tentaeulata, Zonites exeavatus, and 

 Goehlieopa lubrica in N.E. Cheshire.— The three following varieties 



I have recently obtained in this part of Cheshire : — Bythinia tentaculaia var. 

 decollata at Lostock Gralam, in a small pond full of cinders ; Zonites exeavatus 

 var. vitrina at Northwich ; and Cochlicopa lubrica var. hyalina at Ashley Hall, 

 where I found it hybernating in a ditch full of dead leaves. In all three cases the 

 species was plentiful, and only in the last accompanied by the typical form. — 

 J. G. Milne, Bowdon, 14th February, 1886. 



Shells at Millom, Cumberland. — Among the numerous shells which 

 Mr. C. T. Musson has allowed me to inspect are a few collected at Millom, Sept. 

 1882, viz.: — Helix rufescens, H. aspersa, H. rotundata, Pupa u'mbilicata, CI. rugosa, 

 and Balia perversa (with v. simplex), all common ; H. rupestris, fine ; Zonites 

 cellaruis, Z.fiilvus, and Z, radiatulus. — J. W. TAYLOR. 



Naturalist, 



