MARSHALL : ADDITIONS TO BRITISH COXCHOLOGY. 205 



out by Prof. W. H. Dall in another paper on the " Early History of 

 the Generic Name FusiisT^ 



Fusus antiquus L. — A "young and dead specimen" has been 

 dredged by the Rev. J. Smart at Scilly ; this is its furthest southern 

 limit. The operculum is triangularly oval, dark horn-colour, very 

 coarsely wrinkled, with a few faintly-impressed lines, and often a 

 flexuous depression down the centre. Very rarely the shell is snow- 

 white; I have two from deep water off the Shetlands, but these do 

 not belong to the next variety. 



var. alba Jeff — Off Cork (Wotton) ! off Aberdeen (Simpson) ! 

 the Irish Sea, and off Peterhead in 6of. All the specimens I have 

 seen of this variety are very finely striated, and one from Peterhead 

 is entirely devoid of sculpture except the lines of growth. It attains 

 6Ain. by 3in., but one form of it from the Irish Sea, with the aperture 

 expanded and reflected, is 6iin. by 4in. Some aged specimens 

 of the latter have the outer lip formed of half-a-dozen separate 

 la)ers added one over the other, making the edge a third-of-an-inch 

 in thickness. ' 



var. ventricosa Jeff. — (}reat Fisher Bank, off Aberdeenshire 

 (Simpson) ! Doggerbank, 3of. This varies in the length of the spire, 

 but the last whorl is always tumid and greatly expanded, trumpet- 

 shape, like Linnuea aiiricularia. Some of my specimens have 

 hardly any spire, and the largest, from the Doggerbank, are 7 in. by 

 4-Mn. It is yellowish-white externally, with the inside of a deep 

 orange colour, and occasionally the upper whorls are carinated, as in 

 the var. cariiiata. One monstrous specimen from Aberdeenshire has 

 all the whorls strongly carinated. 



var. gracilis Jeff. — I know this from S.W. Ireland only. It is 

 a very handsome shell, characterised by a long slender spire, a thin 

 texture, and tumid whorls. Its dimensions are 6in. by 2iin. 



var. carinata Turt.=var. striata Jeff — One specimen from an 

 Aberdeen trawler (Kelly) ! Bantry Bay, Irish Sea and Bristol Channel. 

 My finest are from S.W. Ireland, and measure 6|^in. by 3in. Some 

 specimens approximate to F. despectus L. in sculpture, but the two 

 forms can always be readily separated. Gvvyn Jeffreys admits that 

 this is F. carinatus Turt, but gives no reason for substituting a 

 varietal name of his own, which was clearly not required. Var. 

 carinata is also a more suitable name, as all the forms of ^ antiquus 

 are striated. 



F. despectus L., although a northern species, has been dredged by 

 the 'Porcupine' in the Atlantic off Ireland, and by the 'Challenger' 



I Journ. Conch., 1906, \oI. xi., pp. ^09-297. 



