DENTALIUM-LiEVIDENTALIUM. Ill 



D. ERECTUM Sowerby. PI. 19, fig. 23. 



Shell polished, narrow, slightly curved, reddish from the middle 

 to the apex, white toward the aperture ; slit on each side (Soivb.). 

 Length 55*5, greatest diam. 3"9 mill, (from fig.). Length 1 inch 

 (A7igas). 



Port Jackson, Neiv South Wales, Australia (Strange ; Augas). 



D. eredum Sows., Thes. Conch., iii, p. 99, pi. 225, f. 55 (1860) ; 

 Conch. Icon., xviii, pi. 6, f. 41. — Antalis erecta Angas, P. Z. S., 

 1867, p. 220.— Clessin, Conchyl. Cab., vi. Heft x, p. 29, pi. 9, f. 1 

 (1896). 



This tapering shell is very little curved ; the narrow^ end is 

 strongly colored, the larger end white. There is a slit on each side 

 of the apex. (Soivb.). 



An unusually straight species. It was dredged by Augas near 

 the " Sow and Pigs " reef. 



D. LONGITROR8UM Reevc. PI. 20, figs. 35, 36. 



Shell much and evenly curved, very long and slender, the length 

 (of chord) about 19 times the greatest diameter; thin, but solid, 

 polished, amber or carnelian colored or tinted, or pure white. 

 Sculpture none, save inconspicuous growth lines. Aperture circu- 

 lar, the peristome thin. Anal orifice, circular, entire or ovate, and 

 with a slight notch slightly aside from the middle on the convex 

 side. Length 89, diam. of aperture 4"7, height of arch from chord 

 16 mill. 



Darnley Island, Torres Straits 30 fms., sandy mud (Chevert Ex- 

 ped.) ; ivest of Cape York, south-ivest of Papua, 25 fms. (Challenger 

 Exped.) ; Bombay (Melv. & Abercrombie) ; Gulf of Suez (Mac 

 Andrew) ; Philippines (Sowerby ; Phila. Acad, coll.) ; Zanzibar and 

 China (Brit. Mus.). 



D. longitrorsuni Reeve, P. Z. S., 1842, p. 197 ; Conch. Syst., ii, 

 p. 6, pl."l80, f. 6, (1842).— Sowerby, Thes. Conch., iii, p. 98, pi. 

 225, f. 59, 60 (1860) ; and in Conch. Icon., xviii, pi. 2, f. 9a, b 

 (1872). — Watson, Journ. Linn.Soc. Lond., xiv, p. 515 (1879) and 

 Challenger Scaphopoda, p. 9 (1885). — Brazier, Proc. Linn. Soc. 

 N. S. Wales, ii, p. 59 (1877). — Melvill & Abercrombie, Mar. 

 Moll. Bombay, Mem. & Proc. Manchester Lit. and Philos. Soc. (4), 

 vii, p. 25 (1893).— Cooke, Ann. Mag. N. H. (5), xvi, p. 271.— D. 

 lamarckii Chenu, Illustr. Conchyl., i. Dent., p. 5. pi. 6, f. 15, 15a. 

 — D. longirostrmn Paetel, Catalog, i, p. 593. 



