37 



it is covered by a rather thickish brown epidermis, the inner lip is 

 orange, the outer lip white, banded with orange. 



55. S. PAPiLio. (pi. vii. f. 44.) Chemn. S. exustus, Humph. 



T. ovali, rugosa, spiraliter striata, seriatim tuberculata; spira 

 brevi ; anfractibus angulatis ; ad angulum tuberculatis ; apertura 

 angusta, nigra, striata; canali bi-emarginato; labio externo postice 

 trilobato, medio incrassato, sub-inflexo, inter sinum anticum et 

 canalem dentato ; labio interno antice emarginato. 



The ground colour of this shell is a whitish grey, with three 

 irregular interrupted bands of light brown with dark coloured 

 zigzag lines ; the inner lining of the aperture is of a deep red, in- 

 clining to black. 



56. S. LENTiGiNosus. (pi. viii, f. 79-) ^^^"- Syst. Nat. p. 1208. 

 T. ovali, rugosa, crassa, seriatim tuberculata; spira brevi; an- 

 fractibus angulatis; tuberculis magnis, coronatis ; apertura an- 

 gusta; canali bi-emarginato ; labio externo postice trilobato, 

 medio incrassato, inter sinum anticum et canalem dentato ; labio 

 interno gibboso, postice elevato, antice truncato. 



The colour of this shell is whitish grey with brown spots, the 

 aperture of a delicate pinkish white, obscurely banded. S. Pa- 

 pilio resembles this species, but is thinner, with a black striated 

 aperture, East Indies. 



57. S. LATissiMus. (^pl. X. f. 112.) Linn. Syst. Nat. p. 1211. 



T. ovali, ventricosa, truncata, spiraliter obsolete costata ; spira 

 mediocri; anfractibus sub-angulatis, tuberculatis; ultimo sub- 

 complanato, lateraliter gibboso, maigine valide expanso; apertura 

 lata ; labio interno incrassato ; labio externo latissimo expanso, 

 postice elevato, medio late inflexo; sinu antico parvo. 



The general colour is pale brown, with interrupted bands of 

 white, and longitudinal undulated streaks of dark reddish brown ; 

 the aperture is white, much expanded, and remarkable for the 

 broad flattened inflection in the central part. 



58. S. LAciNiATus. (pi. X. f. 105.) Chemn. S. cristatus. Lam. 

 vii. p. 202. 



T. ovali, spiraliter striata ; spira elongata ; anfractibus angu- 

 latis, tuberculatis, ultimo prope apertui'am gibboso, sub-compla- 

 nato, ad dorsum tuberculis magnis tribus, mediano maximo, 

 armato, margine expanso ; apertura magna ; labio externo ex- 

 panso, postice supra spiram decurrente, quadri-lobato, medio late 

 inflexo, antice inter sinum et canalem dentato ; sinu magno. 



The colour of this beautiful shell is light brown with interrupted 

 light bands at the back, and white with zigzag brown lines in 

 front ; the inner part of the aperture is deep purplish brown. The 

 inflected and lobed margin of the outer lip, which is expanded and 

 carried upwards to the apex of the spire ; the general form of the 

 body whorl ; and the prominentdentated lobe between the anterior 

 sinus and the canal point out the close relation which this species 

 bears to the genus Pteroceras. 



The author is unable to identify S. persicus and S. Integer, Sw. 



