TRITON. 



Plate VI. 



Species 18. (Fig. a and b, Mus. Cuming.) 



Triton Sinensis. Trit. lestd elongato-clavaformi, vari- 

 cibus duabus rotundis ; spird subela/d ; anfractibus 

 costis duplicibus subdistantibus undiqu'e cinciis, stria 

 unicd elevatd interveniente, costis superis leviter, no- 

 dosis, costis interstitiisque subtilissime. crenulatis; 

 albidd, lutescente tinctd, varicibus inter costas lutes- 

 cent ib us ; columella multirugosd ; labro denticutato ; 

 aperttinc fauce alba ; canali elongato, subcontorto. 



The Chinese Triton. Shell elongately club-shaped, 

 with two round varices ; spire rather elevated ; 

 whorls everywhere encircled with rather distant 

 double ribs, with a single raised stria running be- 

 tween them, upper ribs slightly nodulous, ribs and 

 the interstices between them very finely crenulated ; 

 whitish, stained with pale yellow, varices stained 

 between the ribs with pale yellow ; columella co- 

 vered with wrinkles ; lip denticulated ; interior of 

 the aperture white ; canal elongated, a little con- 

 torted. 



Reeve, Pro. Zool. Soc, 1844. 



Hab. China. 



This shell is not uncommon in collections, though it 

 appears to have been singularly neglected by naturalists. 

 It presents a most remarkable modification of the Triton 

 canaliferus : the entire sculpture of the two species — such 

 as, for example, the double rib, the intervening raised 

 line, the two only varices, the profusely wrinkled colu- 

 mella, the long slightly twisted canal, &c. — is the same 

 in both; but the canaliculated structure of the sutures, 

 which forms so very important a specific character in 

 the Triton canaliferus, is wanting. The Triton Sinensis 

 might therefore be recognised as an example of the Tri- 

 ton canaliferus with the spire pushed out as it were ; 

 or one in which the whorls have not been subject to that 

 peculiar depression which forms so deep and character- 

 istic a channel round the suture. 



Species 19. (Fig. a, Mus. Cuming.) 

 Triton lotorium. Trit. testa subfusiformi-turritd, 

 crassd, solidd, inferne distortd, varicibus quatemis 

 quinisve ; spird rudi, subobtusd; anfractibus superne 

 angulatis, fortiter tuberculatis, obsolete depresso- 

 costatis, costis crenulatis ; rufescente-fulvd, nigri- 



cante-fusco supra aperturam, et varices super, inter 

 costas, ornatd ; columella plus minusve obsolete pli- 

 catd; labro intus denticulato ; canali brevi, lato. 

 The washing-bath Triton. Shell somewhat fusi- 

 formly turreted, thick, solid, distorted at the lower 

 part, with four or five varices ; spire rude, rather 

 obtuse ; whorls angulated at the upper part, obso- 

 letely depressly ribbed, ribs crenulated ; reddish 

 yellow, ornamented above the aperture and upon 

 the varices between the ribs with blackish brown ; 

 columella more or less obsoletely plaited ; lip den- 

 ticulated ; canal short, broad. 



Variety p. (Fig. 19 b, Mus. Saul.) 

 Testa inferne trigono-attenuata, columellas labrique limbo 



rubido-sanguineo vivide tincta. 

 Shell triangularly attenuated at the lower part, edge of 



the lip and of the columella vividly stained with 



ruddy blood-colour. 

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



p. 631. 



Murex lotorium, LinnEeus. 

 Hab. Ceylon. 



The Triton lotorium is a heavy, solid, irregularly- 

 humped shell, of a remarkably distorted growth ; the 

 ruddy blood-colour described in Variety /3. is carried 

 down each border of the canal. 



Species 20. (Mus. Cuming.) 

 Triton grandimaculatus. Trit. testd ovato-turritd. 

 crassd, inferne coarctatd, varicibus tribus; spird sub- 

 obtusd ; anfractibus superne angulatis, transversim 

 exiliter striatis et liratis, liris superis tubercu/ato- 

 nodosis ; fuscescente-fulvd, varicibus et columella: 

 parte superiori maculis grandibus nigerrimo-fuscis 

 ornatis ; columella Itevi vel obsolete plicatd ; labro 

 intus dentato, dentibus nigerrimo-fuscis ; apertura 

 fauce albd ; canali breviusculo, subascendente. 

 The large-spotted Triton. Shell ovately turreted. 

 thick, contracted at the lower part, with three va- 

 rices ; spire rather obtuse ; whorls angulated at 

 the upper part, transversely faintly striated and 

 ridged, upper ridges tubercularly knobbed ; light 

 brownish yellow, varices and upper part of the co^ 



April 1844. 



