10 MKY.M .1.1 3, \\ 1> I 1MUKS. 



D. IMMACrLATfS (C. 15. Ad., Reeve). PL 13, fills. Ml, 87, 88. 



Shell perforate or nearl\ closed, oblong-conic, Solid ; opaque while, 

 suffused with pink In-low, and sometimes brownish around the colu- 

 mella ; but SOIIH- shtdls have a delicate canary-yellow tint in.-tead of 

 [tink. Surface- somewhat gloy. showing growth-lines and tine spiral 

 striation under the lens. Spire slraightly conic, the apex slightly 

 oblige, 1 :-; earlier whorls with typical Dryinaiis sculpture. Whorls 

 li. 1 , to 7, but slightly convex, the last tapering below. 



Aperture slightly oblique, irregularly ovate ; peristome .-imple, 

 hardly expanded below ; coliiniella with slightly oblique, straight 

 edge, or (in quite old Specimens) strongly projecting in the middle, 

 the retlexed margin becoming very heavily calloused with age. 



Alt. 2S, diam. 13, length of aperture 12.', mill. 



Alt. 32.',, diam. I.')-,', length of aperture \.~> mill. 



Alt. -li, diam. 13, length of aperture 13 mill. 



Alt. '2~>, diam. 11, length of aperture II. 1 , mill. 



Jamaica nf M/nuleville (Gloyne), Port Maria (Rush, Henderson), 

 Lout/ Ml. (Henderson and Simpson). 



Ittiliiinis immaculatus ('. 15. Adams MS. in C timing collection, 

 HKKVK, Conch. Icon. pi. IS."), \'. (\:}[ (Feb., IS.'id). PKK., Monogr. 

 iii, ]i. II 1. GI.OYNK, Juurn. de Conehyl. xx, 1*72, p. -'52.- Hiilini- 

 nlns iiiiniiiriiliihis \\ . (i. 15i\Ni;v, Hull. Mus. (.'omp. Zool. v. p. 3;!S, 

 ]>1. 1, f. D (jaw and dentition). II i:M>r.i:s<>N, Nautilus viii, p. ID. 

 TliiniiiKisiim immaculatus Ad., W. (I. HINNKY, Ann. N. Y. Acad. 

 S<-i. iii, p. 122, pi. 12, f. II (radula). 



Fre.-h .-peciiin-ns are somewhat roseate throughout, though onlv on 

 the last whorl is the lint pronounced. Old cabinet specimens fade- 

 to while. In I) lifiiicciis the columella has more of a spiral twist, 

 and so tar as I know the shell is never pink tinted. The two species 

 are \er\ elu-ely allied. The uniform \\hite form of D. />a/t<in,<'i/sis is 

 al.-o e .\ce>.-i\i Iv like Mime specimens of immaculatus. The dentition 

 is like that of I), 



I). LiLiACRi - (F^ruwac). PI. 13, ligs. no, in, D2. 



Shell perloiale, oblong-conic, with long spire, solid; rather gh^-v 

 and crel;ice<iu~ ; i>/>atjn- irlu'tc ninri' <n- /r.v.s- staiiu-il ir I tli liliiisli or iritlt 

 (i n ur roir liliiiali sfrrit/c or tiro. ( Jrowt h->l ri;e line, th" lens re\caliug 

 minute spiral incised lines. Spin- willi nearly straight lateral out- 

 line-, tin- apex somewhat obtuse, with typical DrynUBUS M-nlpture. 



