TRITON. 



For Species 57 see Plate XVI. 

 Fig. 57. Ranella caudata, Say, see Ranella, PI. VII. 



Species 58. (Fig. a and b, Mus. Cuming.) 

 Triton gracilis. Trit. testa gracili-fusiformi, varici- 

 bus tribus ; spin! subelatd ; anfractibus tuberculato- 

 nodosis, liris parvis subtiliter decussatis; lutescente- 

 albd, vel fused, albibalteatd, epidermide tenui subse- 

 tosdindutd; columella fortiter rugosd, albd; canali 

 subeloiujato, ascendente ; apertura fauce albd ; labro 

 intus peculiariter rugoso-denticulato. 

 The slender Triton. Shell slenderly fusiform, with 

 three varices ; spire somewhat raised ; whorls tu- 

 bercularly knobbed, finely decussated with small 

 ridges ; yellowish white, or brown with a white belt, 

 covered with a thin, slightly bristly epidermis; 

 columella strongly wrinkled, white ; canal rather 

 elongated, turned upwards ; interior of the aperture 

 white ; lip peculiarly rugosely denticulated within. 

 Reeve, Pro. Zool. Soc, 1S44. 

 Hab. Philippine Islands ; Cuming. 



A delicate little species, in which the outer lip is pe- 

 culiarly fully wrinkled within. 



Species 59. (Mus. Cuming.) 



Triton elongatus. Trit. testd elongato-fusiformi, va- 

 rice unicd subindistinctd ; spird acuminatd ; anfrac- 

 tibus superne leviter angulatis, transversim liratis et 

 striatis, liris striisque granuloso-crenatis, equidi- 

 stanter nodulosis ; cinercd, liris Uvido-purpureis ; 

 columella excavatd, rugosd, callositate super/it- ar- 

 matd; canali elongato , subcontorto ; labro intus den- 

 tato, dentibus binis. 



The elongated Triton. Shell elongately fusiform, 

 with a single somewhat indistinct varix ; spire acu- 

 minated ; whorls slightly angulated at the upper 

 part, transversely ridged and striated, ridges and 

 striae granulously crenated, equidistantly noduled ; 

 ash-colour; ridges livid purple; columella excavated, 

 wrinkled, armed with a callosity at the upper part ; 

 canal elongated, a little twisted ; lip toothed within, 

 teeth ranged in pairs. 



Reeve, Pro. Zool. Soc, 1S44. 



Hab. Philippine Islands , Cuming. 



This shell approximates very closely to the Triton 

 vespaceus ; so closely indeed, that I may be thought ra- 

 ther venturous to describe it as a new species. The 

 differences however are as follows : the canal is much 

 more elongated, the whorls are not tubercled, and the 

 beaded ridges are of a peculiar livid-purple colour. 



Species 60. (Fig. a, b and c, Mus. Cuming.) 

 Triton gemmatus. Trit. testd elongato-oblongd, vari- 

 cibus quaternis quinisve ; spird subobtusd ; anfrac- 

 tibus liris, pulcherrime gemma t is, eingulatis, inter- 

 stitiis striis elevatis longitudinalibus et transversis 

 eximie clathratis ; aurantio-lutescente ; columella ru- 

 gosd, callositate superne armatd ; canali breviusculo ; 

 labro intus dentato, dentibus binis. 

 The beaded Triton. Shell elongately oblong, with 

 four or five varices ; spire somewhat obtuse ; whorls 

 encircled with very beautifully beaded ridges, in- 

 terstices delicately latticed with raised transverse 

 and longitudinal striae ; orange-yellow ; columella 

 wrinkled, armed at the upper part with a callosity ; 

 canal rather short ; lip toothed within, teeth ranged 

 in pairs. 

 Hab. Island of Ticao, Philippines (found under stones at 

 low water) ; Cuming. 



Variety /3. (Fig. 60 c.) 



Testd albd, varicibus duabns ad senas ; liris subnodosis. 



Shell perfectly white, with from two to six varices ; 

 ridges slightly knobbed. 



Hab. Island of Annaa(Chain island), South PacificOcean, 

 and island of Burias, Philippines (found under stones 

 in both localities at low water) ; Cuming. 



Reeve, Pro. Zool. Soc, 1844. 



The sculpture of this shell is very similar to that of 

 the Triton rubecula ; the beaded ridges are however wider 

 apart, and, on the varices, they have three smaller ridges 

 between them. 



Species 61. (Mus. Hanley.) 

 Triton vespaceus. Trit. testd abbreviato-fusiformi, 

 subtrigond, varice unicd ; spird acuminatd ; anfrac- 

 tibus superne concavo-depressis, transversim crenulato- 

 liratis, liris duabus superis tuberculato-nodosis, inter- 



Jane 1844. 



