TRITON.— Plate XX. 



Hinds, Zoology of the Voyage of H.M.S. Sulphur, 



Mollusca, p. 12. pi. 4. f. 13 and 14. 

 Hab. Island of Quibo, Veragua (found on the sandy 



shore at low water) ; Hinds. 

 The general character of this species is not much un- 

 like that of the preceding ; it is rather more ventricose, 

 and the ribs are more widely separated from each other. 



in growth, the transverse ridges, which are for the most 

 part duplicate, become wider and more prominent, 

 whilst the longitudinal ridges seem to diminish in im- 

 portance, until they become almost obsolete. 



Species 101. (Mus. Norris.) 

 Triton vestitus. Trit. testd ovatd, subpyriformi, crassd, 

 solidd, varicibus duabus rotundatis ; spird brevi, sub- 

 obtusd ; anfractibus /iris angustis longitudinalibus et 

 transversis subexiliter clathratis, spira pracipue ; 

 fused, epidermide lamellosd indutd, anfractu ultimo 

 zona lutescente unicd cingulatd, varicibus lutescente 

 maculatis; columella nigricante-purpured, a/bi-rugo- 

 sd; canali breviusculo; aperturd elongato-ovatd, fauce 

 alba; labro incrassato, intus purpureo tincto, denti- 

 culato, dentibus alius, binis. 

 The clothed Triton. Shell ovate, somewhat pyri- 

 form, thick, solid, with two rounded varices; spire 

 short, rather obtuse ; whorls rather finely latticed 

 with narrow transverse and longitudinal ridges, 

 especially those of the spire ; brown, covered with 

 a lamellated epidermis, last whorl encircled with a 

 single yellowish zone, varices yellow-spotted ; co- 

 lumellablackish purple, crossed with white wrinkles; 

 canal rather short ; aperture elongately ovate, inte- 

 rior white ; lip thickened, stained with dark purple 

 within, toothed, teeth white, ranged two and two. 

 Hinds, Zoology of the Voyage of H.M.S. Sulphur, 



Mollusca, p. 11. pi. 4. f. 1 and 2. 

 Hab. Realejo, Gulf of Nicoya and Bay of Honda, west 

 coast of America (found among the rocks on the 

 shore) ; Hinds. 

 This fine species, which cannot easily be confounded 

 with any hitherto described, exhibits the following pe- 

 culiar feature in the sculpture. As the shell increases 



Species 55. (Mus. Norris.) 

 Triton Tranqueearicus. Var. varicibus tribus. 



For an account of this species and accompanying 

 figure see PI. XIV. 



Species 102. (Mus. Cuming.) 

 Triton decipiens. Trit. testa elongato-ovatd, subfusi- 

 formi. distortii, varicibus quints senisve indistinctis ; 

 (infractilius /iris angustis e/evatis clathratis ; albido- 

 lutescente, epidermide scried indutd: columella pro- 

 fundi e.i cavatd, rugosd, subobsolett umbilicatd, callosi- 

 talibus plurimis superne armatd, rufo-aurantid ; labro 

 ji/ano-eoncuro, rufo-aurantio radiato, intus fortiter 

 rugoso-dentato. 

 The deceptive Triton. Shell elongately ovate, some- 

 what fusiform, distorted, with five or six indistinct 

 varices ; whorls latticed with narrow raised ridges ; 

 whitish yellow, covered with a silken epidermis ; 

 columella deeply excavated, wrinkled, rather obso- 

 letely umbilicated, armed at the upper part with 

 several callosities, reddish orange ; lip flatly con- 

 cave, rayed with reddish orange, strongly toothed 

 within. 

 Reeve, Pro. Zool. Soc, 1844. 

 Hab. Island of Mindanao, Philippines ; Cuming. 



I have long hesitated to consider this shell any other 

 than a variety of the Triton cancellinus ; the differences, 

 though slight, seem however to remain constant. It is 

 uniformly of smaller size, the transverse ridges are not 

 duplicate, and the colour and wrinkled denticulations of 

 the columella and outer lip are of a peculiar and distinct 

 character. 



