MARSHALL : ADDITIONS TO BRITISH CONCHOLOGY. 203 



longitudinal ones, and their edges are foliaceous. In the var. tarentina, 

 the longitudinal ridges are varicose and the spirals are rope-like or 

 semi-tubular ; the term erinaccus would not apply to this variety. 

 Specimens living between tide-marks are about an inch in length, and 

 this is represented by Jeffreys' i'^/z^r/V figure, but dredged examples 

 are larger, and sometimes attain the 2\ inches assigned to the species 

 by Jeffreys. A handsome form from Dublin Bay is elongated and 

 narrow, with a deeper suture. The very young are scarcely distin- 

 guishable from the same stage of TropJion inuricatus. 



Some writers allocate this species, on account of differences in the 

 radula and operculum, to a separate genus Ocinebra, and the next 

 species, for other reasons, to the genera Ocinebrina or Coralliiiia, 

 leaving Murex unrepresented in the British list. 



M. aciculatus var. badia Jeff. — Herm Island, at low water, 

 var. elongata Monts. Jouni. of Conch., 1893, vol. vii., p. 261. — 

 Occurs occasionally with the preceding. 



I have a specimen of Af. hrandixris L., adult but dead, wiiich was 

 trawled 50 miles N.E. of Scarborough. It is not uncommon in the 

 Mediterranean. 



Donovania minima Mont. — Living under stones and among 

 sea-weeds in rock-pools. L. o"2in., b. 075. Scilly Islands (Smart 

 and others). 



var. pallescens Jeff. — Guernsey, Sark, and Herm ; Scilly 

 Islands. This variety is either milk-white, pale yellow, or bi- 

 coloured. 



A tablet of half-a-dozen specimens, containing the animals, is in 

 the Millport Museum at Cumbrae, labelled in Dr. Robertson's hand- 

 writing, " Shore, Cumbrae." They undoubtedly belong to this 

 species, but I have great doubts as to their origin, and think some 

 mistake must have been made. No reliable record is obtainable north 

 of Devon and Dorset. A variety from the Channel and Scilly Islands 

 is destitute of longitudinal riblets on the last whorl, and more rarely 

 on the penultimate also, while an attenuated variety comes from 

 Guernsey. Jeffreys' and Sowerby's figures belong to a slender form, 

 and the latter errs in having the edge of the aperture corrugated 

 instead of plain ; these corrugations should be much fewer, and placed 

 inside the aperture, as in Jeffreys' figure. The generic name Lachesis 

 being in prior use for the Reptilia, was superseded for Donovania by 

 Bucquoy, Dautzenberg, and Dollfus.^ 



Trophon muricatus Mont. — Bull Bay, N. Wales (Archer) ; 

 Loch Fyne (T. Scott) ; lona 2of., Loch Boisdale 3of, 

 var. lactea Jeff. — Scilly Isles 4of , lona 2of. 



I Moll. Mar. Roussilloi^ vol. i., p. 112. 



