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. jjretiosum Nutt. The longitu- 

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

 gradually decreases. 



D. VULGARE DaCosta. PI. 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 

 strise, 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 strii^ 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 46, of apex 0*5 mill, (younger). 



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



Length 48, diam. of aperture 55 mill. 



Mediterranean and Adriatic Seas ; Atlantic from Spain to Belgium; 

 southern England and Ireland. Low water mark to 543 fras. 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. ^Q, f. 1-6. — Dautz., Mem. Soc. Zool. France, viii, p. 

 370 ; ibid., iv, p. 609. — D. entalis of Olivi, Payraudeau, von 

 Salis, 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).— Sows., 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). — I), labiatum Turton, Conch. Diet. Br. Sh., p. 38.— 



