MITRA CORNICULA. 311 



Seguenza, identifying it with M. cornicula, includes it in his list of fossils from 

 the Sicilian and Italian Pleistocene. 



The specimen from the Isle of Man figured by Prof. Kendall (loc. cit.) as Mitra 

 sp. may possibly belong to the present species. 



Mitra cornicula (Linne). Plate XXXIII, figs. 2, 3. 



1758. Voluta cornicula, Linne', Syst. Nat., ed. x, p. 731, no. 362. 



1826. Mitra lutescens, Payraudeau, Moll, de Corse, p. 164, pi. vii, fig. 19. 



1846. Mitra cornea ?, E. Forbes, Mem. Gfeol. Surv., vol. i, p. 428. 



1858. Volutomitra cornicula, H. and A. Adams, Gen. Rec. Moll., vol i, p. 173. 



1873-4. Mitra cornicula (Voluta), Seguenza, Boll. R. Com. Geol. Ital., vol. iv, p. 296, no. 69, 1873 ; 



vol. v, p. 274, no. 28, 1874. 

 1883. Mitra cornicula (Voluta), Bucquoy, Dautzenberg et Dollfus, Moll. mar. Rouss., vol. i, p. 117, 



pi. xvi, figs. 10—13. 

 1890. Mitra cornicula, Carus, Prod. Faun. Medit., vol. ii, p. 407. 

 1901. Mitra (Voluta), cornicula Kobelt, Icon, sclialentrag. europ. Meeresconch., vol. ii, p. 50, pi. xlii, 



pp. 13—23. 



Specific Characters. — Shell solid, elongato-ovate, smooth; whorls 7, but slightly 

 convex, gradually diminishing in size towards an acute apex, the last about half 

 the total length or rather more, having a few inconspicuous strise at the base ; 

 spire slender, acuminate ; mouth long, narrow, angulate above, expanded and open 

 below, with three folds on the columella ; suture distinct but shallow. 



Dimensions. — L. 20 mm. B. 6 mm. 



Distribution. — Recent : Mediterranean, littoral zone, Atlantic coasts as far south 

 as Senegal. 



Fossil : Wexford gravels. 



Oligocene ?, Miocene, Pliocene, Pleistocene (B. D. D.). 



Remarks. — At first I was disposed to think that the Wexford fossil here given 

 under this name was the Volutomitra groenlandica of Beck, insufficiently described 

 by Moller in 1842, but not figured, so far as I know, until 1878 by Prof. Gr. O. Sars 

 and since then in 1901 by Dr. Kobelt. The latter is a truly northern form and 

 was reported from Wexford and doubtfully identified with Mitra cornea {? M. corni- 

 cula) by Prof. Ed. Forbes in 1846 (op. cit). 



I have lately received from Dr. Odhner, however, a recent specimen of V. 

 groenlandica which differs materially from the fossils in question, the spire of the 

 latter being more slender and longer in proportion, the body-whorl shorter and 

 less tumid, and the outer lip less expanded. I can hardly think they can be 

 referred to V. groenlandica, even as a variety, approaching much more nearly the 

 figures of the Mediterranean M. cornicula given by Dr. Kobelt, to which I think 

 they may be more probably referred. 



41 



