TRITON.— Plate XII. 



canal short, suddenly turned upwards; aperture 



small, contracted ; lip strongly denticulated. 

 Lamarck, Anim. sans vert. (Deshayes' edit.), vol. ix. 



p. 636. 



Murex anus, Linnaeus. 



Distorta rugosa, Schumacher. 



Cassis vera, Martini. 

 Hab. Ceylon : Philippine and Society Islands (found 



under stones at low water) ; Cuming. 

 This remarkable species is very generally and abun- 

 dantly distributed throughout the intertropical regions. 



Species 45. (Mus. Cuming.) 



Species 46. (Mus. Cuming.) 

 Triton ridens. Trit. teste! elongato-ovatd, subfusiformi, 

 so/idiusculd, distortd, varicibus quinis senisve sub- 

 indistinctis ; spird acuminatd; anfractibus liris an- 

 gustis elevalis prominentibus distantibus eleganter 

 clathratis, liris Iransversis duplicatis ; carulescente- 

 albd, epidermide sericd indutd; columelld fortiter 

 rugosd, aurantio tinctd ; canali breviusculo, vix 

 ascendente ; aperturd parvd, coarctatd ; labro intus 

 fortiter dentato, albo, aurantio marginato. 



Triton cancellinus. Trit. testd elongato-ovatd, sub- 

 fusiformi. subdistortd, varicibus quinis senisve sub- 

 indistinctis ; spird acuminatd ; anfractibus liris an- 

 gustis elevatis, subdistantibus, eleganter clathratis, 

 liris transversis duplicatis ,■ albido-lutescente, epider- 

 mide sericd indutd ; columelld plicatd et granosd, 

 rvfescente-curned ; canali breriitscii/o, stibasceudente ; 

 aperturd coarctatd ; labro intus denticulato. 

 The cancellated Triton. Shell elongately ovate, 

 somewhat fusiform, a little distorted, with five or 

 six rather indistinct varices ; spire acuminated ; 

 whorls elegantly latticed with rather distant, nar- 

 row, elevated ridges, transverse ridges duplicate ; 

 whitish yellow, covered with a soft velvety epider- 

 mis ; columella plaited and grained, reddish flesh- 

 colour ; canal rather short, turned a little upwards ; 

 aperture contracted ; lip denticulated within. 

 Lamacck, Anim. sans vert. (Deshayes' edit.), vol. ix. 

 p. 637. 



Murex cancellinus, De Roissy. 

 Murex mulus, Dillwyn. 

 Triton clathratus, Lamarck. 

 Tritonium reticulare, Pfeiffer. 

 Hab. Ceylon : Philippine Islands (found in coral sand at 

 the depth of six fathoms) ; Cuming. 

 Great confusion appears to have arisen amongst au- 

 thors in deciding the name of this exceedingly common 

 and well-known species. 



The laughing Triton. Shell elongately ovate, some- 

 what fusiform, rather solid, distorted, with rive or 

 six rather indistinct varices ; spire acuminated ; 

 whorls elegantly latticed with prominent, narrow, 

 raised ridges, transverse ridges duplicate ; pale 

 bluish white, covered with a velvety epidermis ; 

 columella strongly wrinkled, stained with orange ; 

 canal rather short, scarcely turned upwards ; aper- 

 ture small, contracted ; lip strongly toothed within , 

 white, bordered with orange. 



Reeve, Pro. Zool. Soc, 1844. 



Hab. Philippine Islands ; Cuming. 



Although this species exhibits little more than a modi- 

 fication of the characters of the preceding, the difference 

 is of good specific importance. The cancellated sculp- 

 ture is wider and more prominent, whilst the ridges are 

 more sharply noduled in crossing over each other. The 

 wrinkles and denticulations which surround the aperture 

 are much more strongly developed, and the orange- 

 stained colouring of the enamelled disc is peculiarly 

 characteristic. 



Species 47. (Mus. Cuming.) 



Triton retusus. Trit. testd claviformi, varice unicd 

 ant nulld ; spird brevissimd, apice depresso-retuso ; 

 anfractibus subglobosis, superne leviter angulatis, 

 transversim exiliter costatd, costis superis obtuso- 

 nodulosis, inferioribus obsolete nodulosis ; albd, ru- 

 fescente-fusco tinctd et variegatd ; columelld rugosd, 

 labro columellari prominent'e expansd, solidiusculd ; 

 canali e/ongato, recto, pergracili ; labro externa intus 

 dentato, dentibus quasi tmnidis. 



The blunt Triton. Shell club-shaped, with one or 

 no varix ; spire very short, apex depressly blunt ; 

 whorls somewhat globose, slightly angulated at the 

 upper part, transversely faintly ribbed, upper ribs 

 obtusely noduled, lower ribs obsoletely noduled ; 

 white, stained and variegated with light reddish 

 brown ; columella wrinkled, columellar lip promi- 

 nently expanded, rather solid; canal elongated, 

 straight, very slender ; outer lip toothed within, 

 teeth as if swollen. 



Lamarck, Anim. sans vert. (Deshayes' edit.), vol. ix. 

 p. 635. 



Hab. Ceylon. 



This shell may be easily distinguished by its club- 

 shape and very depressed, blunted spire. Besides the 

 light brown with which the body of the shell is varie- 

 gated, there are three dark brown spots on the marginal 

 varix. 



