DENTALIUM-ANTALIS. 41 



D. weinkauffi DKR., Malak. Bl., xxiv, p. 68 (1877) ; Index Moll. 

 Mar. Jap., p. 153, pi. 5, f. 1 (1882). 



Not nearly allied to any other Oriental species, its relationship 

 being rather with the Mediterranean D. vulgare DaCosta (tarentinum 

 Lam.) and the West American D. pretiosum Nutt. The longitu- 

 dinal sculpture does not stop abruptly, as shown in the figure, but 

 gradually decreases. 



D. VULGARE DaCosta. PL 8, figs. 22, 23, 24 ; pi. 9, figs. 53, 54. 



Shell moderately curved, solid, nearly lusterless, opaque white, 

 often with some indistinct dusky zones, and tinted with yellowish- 

 brown or rose toward the apex. Sculpture of fine close longitudinal 

 striae, about 30 in number at the apex of an adult, half that many 

 in a younger shell, increasing by intercalation to double that number 

 of much less conspicuous, fine, low striae on the larger part of the 

 shell, persisting to the aperture, although weak there. Aperture 

 circular, oblique, the peristome thin and jagged from fracture. Apex 

 truncated in adults ; anal orifice small, round or ovate, occupying a 

 very short tube arising from the middle of the thick apical plug. 

 " No notch, groove slit or channel." 



Length 38, diam. of aperture 4*7, of apex 2 mill, (adult). 



Length 36, diam. of aperture 4'6, of apex 0'5 mill, (younger). 



Length 34, diam. of aperture 4*8, of apex 1 mill. 



Length 48, diam. of aperture 5'5 mill. 



Mediterranean and Adriatic Seas ; Atlantic from Spain to Belgium ; 

 southern England and Ireland. Low water mark to 543 fms. Mio- 

 cene of Belgium ; Pliocene of Italy. 



Dentale vulgare DACOSTA, Brit. Conch., p. 24, pi. 2, f. 10 (1778) 

 Dentalium vulgare MONTEROSATO, Not. int. alle Conch. Medit., p. 

 28 (1872). BUQUOY, DAUTZ. & DOLLF., Moll. Mar. du Roussillon, 

 i, p. 558, pi. 66, f. 1-6. DAUTZ., Mem. Soc. Zool. France, viii, p. 

 370; ibid., iv, p. 609. D. entalis of OLIVI, PAYRAUDEAU, VON 

 SALTS, PHILIPPI and others, and in part of LINNE. D. tarentinum 

 LAMARCK, An. s. Vert., v, p. 345 (1818). FORBES & HANLEY, 

 Hist. Brit. Moll., ii, p. 451, pi. 57, f. 12 (1853). SOWB., Illustr. Ind. 

 Br. Sh., pi. 10, f. 27 ; Thes. Conch., iii, p. 100, pi. 224, f. 19, 20. JEF- 

 FREYS, Brit. Conch., iii, p. 195 ; v, p. 197, pi. 55, f. 2 ; P. Z. S. 

 Lond., 1882, p. 657. CLESSIN, Conchyl. Cab., p. 3, pi. 1, f. 1, and 

 of many other authors. D. striatum MONTAGU, Test. Brit, ii, p. 492 

 (not of Born). D. labiatum TURTON, Conch. Diet. Br. Sh., p. 38. 



