R e m a r k s. Similar to D. compressjini W'atson of the West Indies. The interspaces 

 between the ribs are about three times as wide as the ribs themselves, where smaller riblets 

 are not interposed (Mart.). 



Dr. Joh. Thiele of the Zoological Museum of Berlin had the kindness of sending me 

 a photograph of the hitherto unfigured D. clat/iratum, which is now reproduced in this Report. 

 There is some resemblance between D. Martensi and D. clathratiim, but I believe the differences 

 to be crreat enough to distinguish them as different species. Martensi is a stronger shell and 

 the diameter increases more rapidly than in clathratjim. while the secondary and tertiarj- riblets 

 are better developed. The cancellation on the ribs, which is a striking feature in Martensi, was 

 not noticed by v. M.a.rtens. but Dr. Joh. Thiele informs me, that he holds it for possible that 

 better preserved specimens of D. clathratiiiu might prove to have slightly cancellated ribs. 



Group of D. MULTISTRIATUM. 



Irregularly many-ribbed species of rather smal! size, often with alternating translucent and 

 opaque encircling bands, or dots on the ribs; apex either simple, notched or tubiferous (P. & Sh.). 



I. Fine crowded striae, continuous from base to apex nniltistriatum. 



II. About IC — 13 riblets at the top. 



a. Length 31 mill., greatest diam. 4 mill Bclcheri. 



b. Length 19 mill., greatest diam. 2 mill variabile. 



*39. Dcntaliiiin nniltistriatuin Deshayes. PI. I, fig. 19. 



1825. Dentalium iiiiiltistriatiuit Deshayes, Mém. Soc. Hist. Nat. Paris, II, 9.358, pi. 18, fig. 11. 

 1897. Dentalium viultistriatuin Deshayes. PiLSBRV & SH.A.RP, Man. of Conch., vol. XVII, 

 p. 251, pi. 39, fig. S. 



Diagnosis. Small, narrow, generally but little curved, white, yellowish or grayish ; 

 entirely covered with fine, crowded striae, continuous from base to apex. In some individuals 

 these striae are a little wider, less crowded, with a fine thread interpo.sed; but in the majority 

 of shells they are equal, rounded, sometimes quite regularly spotted with gray or translucent 

 white on an opaque white ground. Apex ordinarily worn, the striae often deeper than at the 

 base; aperture perceptibly oblique, with very sharp peristome. Length 20, greatest diam. 3 mill. 

 (P. & Sh. from Desh.). 



Dist r ibu ti o n. Found with Dcntalitiin variabile and presumably from India (Desh.). 



*40. Dentalium Belcheri Sowerby. PI. I, hg. 18. 



1860. Dentalium belcheri Sowb. juv., Thes. Conch. III, p. loi, pi. 224, figs 28, 29. 

 1872. Dentalium belcheri Sowb., Conch. Icon. XVIII, pi. i, flg. \a, b. 



1897. Dentalium belcheri Sowb. PiLSBRV & Sharp, Man. of Conch., vol. XVII, p. 60, pi. 14, 

 figs 29, 30. 



