1 8 MISCELLANEOUS. 



Varieties of Unio Tumidus (Nat., p. 86, 1891). 



Mr. George Roberts records that a var. bicolor, Wilcock, has been verified by 

 M. Bourquignat and named U. zvilcocki. The description is as follows : Shell 

 medium size, smooth, marked with alternate longitudinal brown and green bars. 

 As almost any variety ranks as a species among the " Bourguignat school " the 

 varietal name will be retained. A var. constricta is described as follows : Shell 

 darkly coloured ; slightly incrassate ; both valves constricted. There is nothing 

 of particular interest about either of the forms. 



DISTRIBUTION. 



Contribution towards a List of Irish Mollusca (Journ. Conch., Vol. VI., 

 No. 12, 1891). 

 Mr. J. G. Milne describes the L. and F. Mollusca of Achill Island, 

 enumerating 8 freshwater species, 7 slugs, and 27 land species. 



Land and F. W. Moll, of Suffolk (Suff. Inst. Arch, and N. H., Vol. VII, 

 p. 3. 1891). 

 The Rev. Carlelon Greene's compilation enumerates 95 species (37 freshwater 

 and 58 land forms, including 9 slugs). A bibliography of the county would have 

 added to the usefulness of the list. 



Testacella Scutulum in Yorkshire (Nat., Jan., p. 12, 1892). 



It has been a matter of doubt for some time as to whether this slug occurred 

 in Yorkshire. Mr. Edgar R. Waite collected specimens near Leeds in 1886, and 

 again in 1891, which have been identified, and are now placed on record. 



Mollusca of the Thames Estuary (Essex Nat., Vol. V., p. 220). 



Mr. Jenkins discusses Hydrobia jenkinsi, and compares it with its nearest 

 allies amongst the New Zealand species. A list of the land mollusca and those 

 found in fresh and brackish water is appended, together with bibliographic 

 references on the subject. 



Remarks on Australian Slugs (Ann. and Mag. N. H., p. 169, 1892). 



Mr. C. Hedley takes exception to Mr. Cockerell's classification of Australian 

 Slugs (P.Z.S., p. 214, 1891). He considers Umax megalodontes, Q. & G. a 

 true Liffiax, and therefore should not be included under Aneitea, Gray. After 

 examining several hundreds of A. griiffei, Humbert, he is of opinion that A. kjrjjfti 

 and schutei are mere synonyms. Mr. Cockerell assigns 18 species of Helicarion 

 to Australia, whereas Mr. Hedley says Australian naturalists are unacquainted 

 with even ei<:ht. 



MISCELLANEOUS. 



The Chromatophores of Cephalopods (Ann. and Mag. N. H., p. 1S2, 1892). 

 M. Raphael Blanchard. 



On the Nature of the Movement of the Chromatophores of Ceph- 

 lapods (Ann. and Mag. N. H., p. 183, 1892).— M. C. Phisalix. 



Conchology in Winter (Brit. Nat., Mch., p. 45, 1892).— \V. A. Gain. 



Notes on Mollusca — Genus Odostomia, Deccolate Shells, &c. (Brit. Nat., 

 p. 46, 1892). — B. Tomlin. 



On the Variation in the Banding of Helix (Brit. Nat., p. 47, 1892). — Walter 

 E. Collinge. 



The New Britain Currency or Shell-money (Pro. Roy. Soc. Vict., Vol. III., 

 p. 46, N. S).— R. H. Rickard. 



Land Shells of Dorset (Pro. Dorset N. H. and A. F. Club, p. 99, 1S91). — 

 C. O. P. Cambridge. 



