Mollusks. 4261 



Note on the Crested Blenny (Blennius palmicornis).— Several specimens of this 

 fish have occurred to the east of this district in the Moray Firth. Mr. Peach has also 

 obtained it at Peterhead. — Id. 



Note on the Poor or Power Cod (Morrhua minuta). — This is abundant with us, 

 though by some oversight it has not, so far as I have noticed, been included as 

 a denizen of our waters. — Id. 



Occurrence of the Four-horned Coitus, (Cottus quadricornis, Linn.) — On the 7th of 

 this month I had a fine specimen of this fish brought me which had been caught in a 

 seine in the backwater here ; it is not a very large piece of tidal water, and a river 

 runs in at the top, so that there is a large proportion of fresh water. The fish was 

 forwarded to the Zoological Society's aquavivarium. — William Thompson; Weymouth, 

 February 14, 1854. 





List of Land and Fresh-water Mollusks found in the Neighbourhood 

 of Ackworth, Yorkshire * By Charles Ashford, Esq. 



The Nomenclature of the following List is that of Gray's Turton's 

 ' Manual. 7 



Bilhinia tentaculata. Abundant ; invariably covered with an earthy 

 incrustation. 



Valvata piscinalis. Abundant at Winterset reservoir (five miles 

 south-west), and common here. 



Arion ater. Common ; of several shades between black and russet 

 brown. 



Limax maximus. Common, but generally not so large ; I have 

 often seen them in other districts. 



„ carinatus. Several specimens once found together on 



a stone wall, after a wet day. 



„ agrestis. Superabundant. 



Vitrina pellucida. Of frequent occurrence, especially in early 

 spring, at the bottom of hedges, among wet leaves, &c. 

 Helix aspersa. Common and voracious, as everywhere else. 

 „ hortensis. Occasional. 



„ hybrida. Rare ; one good specimen found under a stone a 

 few days ago, with hortensis and nemoralis. 



„ nemoralis. Common ; one specimen was found marked with 

 rich mahogany-like blotches instead of bands. 



* Ackworth is situate on the borders of the sandstone of the coal measures, with 

 the magnesian limestone and new red sandstone within two or three miles. 



