i vi. i. UN v. L'tH 



xx. p. 189, 287; I 1 . Z.8.U KolL tact N 



283, pi. 17, f. 15, 16, A. A.D., Th. Conok ii, p. . r ,!H, pi. IS 

 187. GOULD, Inv. Maat. (edit W, O.B.), p. 220, 98, LIMN 



K.Svciisk. \Yt.-Akad. 1878, p. 72. WA1BOV, ('hall. K-p. (iastr., 

 p. <5'il. ArKivn.Lir-. STegl Kxpe.l. iv, p. :>(i!. /;////* fril 

 COUTH., Bost. Journ. N. H. ii, p. 8-s, pi. 2, f. 8. Ci/liflnci > Inngata 

 LoCARi'. CM|. Mar. Cutes France, p. 25, 1892. 



Shorter and less cylindrical than C. cytindrnreu, and with far less 



obvious spiral striation than C. <><><-ult<t. 



Var. CORTICATA (Beck) Moller. PI. 60, h>. 14, 15. 



Shell with a thirk, dnrk brownish < />i'l' me what narrowf-r 



than the typical nlhn, cylindrical: vertex broadly truncated; col- 

 uniclla indistinctly folded. Alt. 8 mill. 



A""/- '"//; Greenland. 



Unfit! cniiicntn (BECK) MOLLER, Ind. Moll.Groenl.Naturh.Tids- 

 krift, p. 79, 1842. Cylichiw alba /v/r. corticata SARS, Moll. Arct. 

 Norv. p. 283, pi. 17, f. 16. AURIVILLIUS, Vega Exped. iv, p. 370. 

 /;. (Cylichmt) cortiwta AD., Thes. ii, p. 592, pi. 125, f. 138. 

 ttulla nuc/eofa REEVE, in The Last of the Arctic Voyages (Belch- 

 er's) ii, p. 393, pi. 32, f. 2, 1855. 



C. cin:vi:i:rxr Dautzenberg. PI. 29, figs. 1, 2, 3. 



Shell 6 mill, high, 2*7 mill, wide ; solid, rather shining, cylindrical 

 truncated above and below. Whorls 3, convoluted, the first 

 immersed, the last smooth but with arcuate, obsolete growth-stria-. 

 Aperture narrow, at base dilated. Columella very oblique, 

 calloused, very shining. Lip acute, arcuate above, then straight- 

 ened. Color white. (Dautz.). 



, Azores, 1287 meters. 



C. chevreuxi DAUT/.., K.'.s. Camp. Sci. Albert I, p. 23, pi. 1, f. 6. 



Differs from C idlm in the wider, thicker columella, and more 

 effuse base of the aperture. 



C. GRIMALDII Dautzenberg. PL '27, figs. 99, 100. 



Shell 9 mill, hiirh. "> broad, rather solid, convoluted, subcylin- 

 drical, the base rounded. Apex obtusely truncated, irnperforate, 

 depressed in the middle. Last whorl with arcuate growth-lines and 

 regularly ornamented with numerous impressed distinct spiral stria-. 



