HELICINA. 365 



Siilfurina behniana, Waguer, Denks. Kaiserl. Akad. Wiss. Wien, 

 Ixxvii, 1905, p. 375, pi. 2, figs. 9rt-9c ; id., Coiich.-Cab., Heli- 

 cinidae, 1907, p. 24, pi. 3, tigs. 19-21. 



Original descripiion: — " T. conoiilco-depressa, teiiuiuscula, sub 

 lente leviter striiitula, oleoso-inicans,. Ihivida ; spira regulariter 

 conoidea, aciitiusciila ; anfr. 4| vix coiivexiusculi, ultiiniis 

 peripheria subaiigiilatiis ; apertuni obliqua, iutegra, triangulari- 

 semiovalis : columella brevissinia, subincrassata, calliuii cniittens 

 tenuem, diffusum ; perist. sublate expausuiii, iiiargiue coluiuoUari 

 lovitei- arcuato. Operc. solidulum, concolor. 



" Diani. niaj. 7j, miu. 5|, alt. 4| mill." {Pfeiffer.) 

 Hah. Xicobai* Is. : Sauibelong, I'ulo Panjaug (ReinJiardi) ; 

 Katcbal (liOCj^storf). 



HG'S. Helicina bensoni, Wa<jner. 



Sidfurina br>is'ou\ Wagner, Conch. -Cab., llelicinidtc, 1907, p. 26, 

 pi. 4, iigs. 1-3. 



Oriijinal description (in German) : — " Sliell small, conical, with 

 rountled base ; yellow-brown, with two white bands at suture and 

 keel ; upper whorls light red-brown ; the sculpture consists of 

 very fine radial lines of growth and a few spiral lines, almost 

 obliterated and only visible under a l(?ns. The conical spire 

 consists of four flattened whorls, increasing slowly and regularly, 

 the last bluntly keeled, desceniling very little and slowly below 

 the keel ; the bluntly triangular aperture is slightly oblique, tlie 

 peristome scarcely tliickened and a little expanded ; the siniio.sity 

 at the junction of the basal margin with the columella is slight, 

 tlie angle being distinctly visible. The rather thick basal callus is 

 distinctly circumscribed. 



" Diam. maj. o-(), min. 3"3, alt. 2-G mm. 



" Operculum yellowish-white on either side, with a rather thick, 

 finely granulated calcareons lamella and distinctly raised sigmoid 

 edge." ( War/ tier.) 



Jfah. Nicobar Is. 



Stated to agree somewhat with the description of //. scrupidum, 

 but smaller, while the two red bands above the periphery are 

 absent; the last whorl is decidedly bluntly keeled and the aperture 

 not lunate. 



oG4. Helicina zelebori, Vfeifer. 



ILdicina zde\ori, PlViftVi', Verb. K. K. zool.-bot. dcs. xvii, 18G7, 



p. 807; rfeiffer, Mem. I'licum. Suppl. .">, 1870, p. 247. 

 ruchiistoma zelebori, Fruiientekl, Verli. K. K. zool.-bot. Cies. xix, 



1809, p. 879; Miircb, .Jouru. Concliyl. xx, 1872, p. .331. 

 Jleh'cina {Fachy stoma) zelebori, Murcli, Journ. Couch vl. xxiv, 



1870, p. 364. 

 Siilfurina zelebori, Wagner, Denks. Kaiserl. AKad. \^'iss. Wien 



Ixxvii, 1905, p. 380, pi. 3, figs. 5a-oc; id.. Conch. -Cab., lleli- 



cinidae, 1907, p. 32, pi. 5, figs. 1-3. 



