TRITON. 



Plate V. 



Species 12. (PL IV. f. 12 a, Mus. Cuming.) 

 Triton australis. Trit. testa ovato-conkd, tubaformi, 

 inferne inflatd, varkibus denis undenisve plano-de- 

 pressis; spird breviusculo-acuminatd ; anfractibus 

 leviter angulatis, nodorum subindistinctorum seriebus 

 duiibus armatis, transversim liratd, liris subtilissimi 

 striato-crenulatis ; pallide violascente, fuscesce/ite 

 variegata et macnlatd ; epidermide tenia ; columella 

 lavi, obsolete plkatd, plica alba iinicd prominente 

 superne munitd ; labro intus denticulate; aperturd 

 ovatd, subampld, fauce ulbido-violascente. 

 The southern Triton. Shell ovately conical, trumpet- 

 shaped, inflated towards the lower part, with tenor 

 eleven flatly-depressed varices ; spire rather shortly 

 acuminated ; whorls slightly angulated, armed with 

 two rows of rather indistinct knobs, transversely 

 ridged, ridges very finely striately crenulated ; pale 

 violet-colour, spotted and variegated with light 

 brown ; epidermis slight ; columella smooth, obso- 

 letely plaited, furnished with a single prominent 

 white plait at the upper part ; lip denticulated 

 within ; aperture ovate, rather large, interior very 

 palely tinged with violet. 



Variety /3. (PL V. f. 12 b, Mus. Cuming.) 

 Testa vivide cocceo-rufescens, liris Itinc illi/ic luiioribus, 



subdepresso-costaformibus, rufescente-fusco tessel- 



latis. 

 Shell tinged with bright scarlet-red, ridges here and 



there wider, rather depressly rib-shaped, tessellated 



with reddish brown. 

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



p. 625. 



Murex Tritonium australe, Chemnitz. 



Murex Nerei (pars), Dillwyn. 

 Hab. New Holland. 



There appears to be two very well-defined varieties of 

 this species, the one tinged with violet, the other with 

 scarlet-red. As in all the nodiferons Tritons, the knobs 

 are strongest and most prominent on the penultimate 

 whorl. ■ 



Species 15. (Mus. Cuming.) 

 Triton corrugatus. Trit. testd fusiformi-turritd, va- 

 rkibus senis septemve ; spird obtuso-elongatd ; an- 



fractibus superne depressis, transversim corrugato- 

 costatis, costis tuberculato-nodosis, plerisque subob- 

 solefe duplicibus, interstitiis subprofundis, striatis .- 

 albd,fusco hinc illinc sparsim tinctd ; columella he- 

 viusculd, callositate superni armatd ; labro fortiter 

 dentato, dentibus fusco tinctis ; aperturd parvd, fauce 

 alba ; canali breviusculo, ascendente. 



The corrugated Triton. Shell fusiformly turreted, 

 with six or seven varices ; spire obtusely elongated ; 

 whorls depressed at the upper part, transversely 

 corrugately ribbed, ribs tuberculously noduled. 

 most of them rather obsoletely double, interstices 

 between the ribs rather deep, striated ; white, 

 sparingly stained here and there with brown ; co- 

 lumella rather smooth, armed at the upper part 

 with a callosity ; lip strongly toothed, teeth stained 

 with brown ; aperture small, interior white ; canal 

 rather short, turned upwards. 



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

 p. 6-28. Enc. Meth., pi. 416. f. 3 a b. 



Hab. Mediterranean, coast of Messina ; Philippi. 



This shell is very peculiarly tinged in places with 



light reddish brown, and the ribs exhibit a half-waved 



or corrugated character which I have not observed in 



any other species. 



Species 16. (Mus. Cuming.) 



Triton tripus. Trit. testd trigono-clavaformi; varicibus 

 tribus ; spird brevi ; an/ractibus supernl angulatis, 

 ad angulum tuber culatis.juxta suturam profundi ca- 

 naliculatis, transversim cos tat is, costis subdistantibus, 

 liris tribus vel quatuor subtilissimis intervenientibus, 

 costis lirisque fortiter cre/iatis ; luteo-fuscescente, 

 albo sparsim varid : columelld corrugatd ; canali lon- 

 giusculo, subascendente. 



The trifod Triton. Shell triangularly club-shaped, 

 with three varices ; spire short ; whorls angulated 

 at the upper part, tuberculated on the angle, deeply 

 canaliculated next the suture, transversely ribbed, 

 ribs rather distant, with three or four very fine 

 ridges running between them, ribs and ridge.* 

 strongly crenated ; pale yellowish brown, sparingly 

 variegated with white ; columella wrinkled ; canal 

 rather long, a little turned upwards. 



April 1844. 



