TRITON.— Plate XI. 



Species 37. (Mus. Metcalfe.) 

 Triton Chbmnitzii. Trit. testa ovato-fusiformi, ven- 

 tricosd, tenuici/ld, varice unicd; spird acuminato- 

 turritd; anfractibus superne angulatis, ad unguium 

 plus minusve subnodosis, concentrice subplicatis, 

 transversim liratis, liris planiusculis, irregularibus, 

 obsolete nodosis; spadiceo-fulvd, epidermide setosd, 

 concentrice plicatd, indutd, liris plus minusve livido- 

 purpureis; columella purpureo tincld, albirugosd ; 

 canali breviusculo, recurvo ; aperlitrcefauce ctsruleo- 

 albidd; labro intus costellato-dentalo, aurantio 

 tincto. 

 Chemnitz's Triton. Shell ovately fusiform, ventricose, 

 rather thin, with a single varix ; spire acuminately 

 turreted ; whorls angulated at the upper part, more 

 or less slightly noduled on the angle, concentrically 

 slightly plaited, transversely ridged, ridges rather 

 flat, irregular, obsoletely noduled ; yellowish bay, 

 covered with a bristled, concentrically folded epi- 

 dermis, ridges more or less stained with livid 

 purple ; columella stained with purple, covered with 

 white wrinkles ; canal rather short, recurved ; in- 

 terior of the aperture bluish white ; lip toothed in 

 a rib-like manner, orange. 

 Gray, Zoology of Beechey's Voyage, p. 110. 



Argo-buccinum nodosum, Martini, vol. iv. pi. 131. 



f. 1256. 

 Cassidaria setosa, Hinds. 

 Hub. Panama (found in sandy mud at the depth of six 

 fathoms) ; Cuming. 

 Mr. Gray appears to have overlooked the figure above 

 referred to in Martini's portion of the ' Conchylien Ca- 

 binet,' or he would probably have dedicated the species 

 to that illustrious author instead of his successor. The 

 figure of Chemnitz's Murex argus, var., referred to by 

 Mr. Gray, is the Triton Tranquebaricus. 



Mr. Hinds refers this shell, as Lamarck did its next 

 allied species (Triton cingulatus), to the genus Cassidaria; 

 he does not, however, seem to have been acquainted 

 t .ither with Martini's figure or Mr. Gray's description 

 • m<l specific name. 



Species 3S. (Mus. Cuming.) 

 Triton gibbosus. For description see Plate XIV. 



Species 39. (Mus. Cuming.) 

 Triton cutaceus. Trit. testd ovatd, planiusculo-com- 

 pressd, varicibus quaternis quinisve tuberculiferis ; 

 spird obtusd; anfractibus irregulariter convolutis, 

 superne angulatis, infra unguium tuber culis grandibiLS 

 biseriatim armatis, transversim costatis, costis, nisi 

 super varices, subobsoletis, crenulatis ,- spadiceo- 

 fulvd. cvticuld corned indutd; columella a/bd, Icevi, 

 callositate parvd superne munitd; canali brevi, pro- 

 fundi umbi/icato ; aperturx fauce alba ; labro undu- 

 late, intus plus minusve dentieulato. 

 The cuticle-clad Triton. Shell ovate, rather flatly 

 compressed, with four or five tubercled varices ; spire 

 obtuse ; whorls irregularly convoluted, angulated at 

 the upper part, armed with two rows of large tu- 

 bercles beneath the angle, transversely ribbed, ribs, 

 except in passing over the varices, almost obsolete, 

 crenulated ; yellowish bay-colour, covered with a 

 horny cuticle ; columella white, smooth, furnished 

 with a small callosity at the upper part ; canal short, 

 deeply umbilicated ; interior of the aperture white ; 

 lip undulated, more or less denticulated within. 

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

 p. 041. 



Murex cutaceus, Linnaeus. 

 Hah. Mediterranean, and Van Diemen's Island. 



This species, an inhabitant of the Mediterranean, like 

 the Triton olearium, is found in two very remote parts 

 of the globe. It differs from the Triton Spengleri in the 

 same manner that the Triton grandimaculatus differs from 

 the Triton lotorium, namely, in the more elaborate cha- 

 racter of the sculpture of the first two or three whorls ; 

 beyond that, the peculiarity is reversed, the difference 

 between the last whorls of the Tritones Spengleri and 

 cutaceus being, that in the latter species the ribs and 

 crenulated sculpture are nearly obsolete. 



