294 



ADDITIONS TO "BRITISH CONCHOLOGY." 



By J. T. MARSHALL 



Part VII. (contmued from page 2ji). 



Columbella haliseeti Jeff. — S.W. Ireland (R.I. A. cruise); off 

 the Butt of Lewis, 545f., and between the Shetlands and Norway, 

 73-i55f. (Simpson)! Shetland - Faroe Channel, 5i6f. and 57of. 

 ('Triton'); English Channel slope dgof. ('Porcupine'); off the Butt of 

 Lewis, 53of. ('Knight Errant'), associated with C. costulata Cant., 

 which was for a time considered identical with C. haliceeti, but now 

 regarded as the Bucchnan acuticostatum of Philippi, a Calabrian 

 pliocene fossil. In regard to the legitimacy of the specific name, see 

 Marshall: "Alterations in Brit. Conch.," y"^«^«. of Conch., 1895, vol. 

 viii., pp. 38-9. 



var. albula Jeff. — Unst (Jeffreys) ; E. Shetlands, 4of ; S.W. 

 Ireland, 75of (R.I.A. cruise)! At some of the Porcupine dredging 

 stations in the Atlantic off Ireland all the specimens were of this 

 variety. 



This is a most variable shell as regards size, number and strength 

 of ribs, angularity of whorls, and proportions of length to breadth. 

 Some specimens have fewer and stronger ribs, with the tops of the 

 whorls shouldered, exactly resembling in these respects the relations 

 of var. tiitida to JVassa reticulata ; while in others the armature of 

 the aperture consists of tubercles instead of short ridges or corruga- 

 tions. Jeffreys' generic figure is the type; his plate-figure is too 

 narrow. For further particulars of this species see Journ. of Conch., 

 1895, vol. viii., pp. 38-39. 



The discovery of C. haliceeti came as a last hope at the end of a very 

 unsuccessful Shetland cruise. For weeks Gwyn Jeffreys' yacht the 

 Osprey (whence the name of the species is derived) had been unable 

 to go out, and as the season was nearing its end he induced his 

 captain to go out and bring him in something as a farewell. The 

 captain returned at the end of the week with a few things on a clean 

 plate, among which were the Columbellcz. Gwyn Jeffreys had to be 

 satisfied with them for that season, but the following year the same 

 ground was again visited and more specimens secured. 



A specimen of Columbella rustica L. has been picked up by Mr. 

 Tomlin on the Tenby beach, that noted haunt of foreign shells, and 

 also several examples of Conus mediterraneus Brug., while only last 

 winter three specimens of Trochus conulus L. were picked up on three 

 different days on the same beach. 



I 



