388 Miscellaneous. 



the number of Shetland Nudibranchs to 26, and that of all the 

 Zetlandic Molliisca to 359. 



The total number of British land and freshwater species should 

 be thus divided : — 



Conchifera ". 15 



Gastropoda 107 



The numbers (47 and 75) given in the Eeport were those of fresh- 

 water and land species respectively. 



In the list of Diatoms, Sinciella minufa ought to be Surirella minuta. 



I remain. Gentlemen, yours faithfully, 

 25 Devonshire Place, Portland Place, ^' G^wyn Jeffreys. 



15th October, 1868. 



On the Occurrence of the Genus Anser in the Peat and Gravel Deposits 

 in Cambridgeshire. By J. F. Walker, B.A., P.G.S. 



Among the bones which I have obtained from the Cambridgeshire 

 fens, I have detected the humerus of a species of goose. With the 

 kind assistance of Mr. Dallas, I have compared this bone with those 

 of the skeletons of geese contained in the valuable collection of 

 comparative osteology in the York Museum ; and it appears to agree 

 in all its essential characters with the right humerus of Anser ferus. 

 I am not aware of the occurrence of this bird in the fens having 

 been previously recorded, although its presence there might have 

 have been expected. The bone is of the dark colour proper to those 

 found in the fens. 



A more interesting discovery is that of the right humerus of a 

 distinct and larger species of the genus Anser, obtained from the 

 gravel deposits near Cambridge, which contain species of elephant, 

 rhinoceros, horsoj &c. associated with Cyrena jiuminalis and exist- 

 ing land and freshwater shells (see a paper by Mr. H. G. Seeley in 

 the Quarterly Journal of the Geological Society for 1866, p. 475). 

 This bone is larger in every respect than the one which I have re- 

 ferred to Anser ferus ', its total length is 6|- inches, diameter of the 

 shaft -jSg- inch, greatest breadth across the proximal end 1-|- inch, 

 and breadth of distal extremity IjL inch. The pneumatic foramen 

 is not only relatively, but absolutely smaller than that in the 

 humerus of A^iser ferus. Dr. Buckland figures (Beliquiae Diluvianae, 

 pi. xiii. figs. 9, 10) a fragment of the humerus of a bird from the 

 diluvium of Lawford near Rugby, which he considers to have be- 

 longed to a species of Anser. The bone figured by Dr. Buckland 

 seems to be nearly of the same size as that in my possession ; but if 

 we may trust the figure, its shaft had a rather stronger curve, and 

 the structure of the proximal portion was not quite the same. 



JEujplectella. 

 A new importation of these beautiful sponges ; they are offered 

 under the name of " SeeJcrebs-Nest (that is, Sea-CraVs nest), which 

 are only found on the Island of Zebu, and are imported from Manilla." 

 —J. E. Gray. 



