115 



Conch. Icon., Triton, pi. 12. f. 42. 



Hab. China. 



Care mušt be taken not to confound this shell with the Triton tri' 

 lineatus, in which the dorsal tubercies are raore strongly developed, 

 and which has no varix on the back of the penultimate whorl. 



Tkiton encausticus. Trit. testd pyriformi, varice unico depres- 

 siusculo ; spira rotundato-depressd ; anfractibus transversim cos- 

 tatis, tuherculorum seriebiis phirimis longitudinalibus armatis, 

 in/erioribus minoribus ; albidd.fusco varie tinctd ; columelld lavi, 

 crassissime encausticd, aurantio-lutescente ,■ canali elongato, ascen- 

 dente ; labro aurantio-lutescente, intus denticulafo. 



Conch. Icon., Triton, pi. 12. f. 43. 



Hab. Island of Ticao, Phillppines (found on the reefs) ; Cuming. 



The enamelled character of the mouth of this shell is sorae\vhat 

 likę that of the Triton tuberosus ; the form is that of the Triton re- 

 tusus. 



Triton ridens. Trit. testd elongato-ovatd, subfusiformi, solidius- 

 culd, distortd, varicibus quinque seocve subindistinctis ; spira acu- 

 minatd ; anfractibus liris angustis elevatis prominentibus distantibus 

 eleganter clathratis, liris transversis duplicatis; ccerulescente-albd, 

 epidermide sericd indutd; columelld fortiter rugosd, aurantio 

 tinctd; canali breviusculo, vix ascendente ; aperturd parvd, coarc- 

 tatd ; labro intus fortiter dentato, albo, aurantio marginato. 

 Conch. Icon., Triton, pi. 12. f. 46. 

 ' Hab. Philippine Islands ; Cuming. 

 Although this species exhibits little more than a modification of the 

 characters of the Triton cancellimis , the difFerence is of good specific 

 importance. Tiie cancellated sculpture is wider and more prominent, 

 ■vvhilst the ridges are more sharply noduled in crossing over each 

 other. The wrinkles and denticulations which surround the aper- 

 ture are much more strongly developed, and the orange-stained co- 

 louring of the enamelled disc is peculiarly characteristic. 



Triton Thersites. Trit. testd subfusiformi, varicibus quatuor ; 

 spird exsertd ; anfractibus transversim granoso-liratis, angulatis, 

 ad angulum tuberculatis, tubercuUs validis, valde prominentibus, 

 anfractuum totd superficie subtilissime granulosd ; columelld albd, 

 subexcavatd, levitev rugosd, callositate superne armatd ; canali 

 longiusculo, subascendente ; labro intus leviter denticulato. 

 Conch. Icon., Triton, pi. 13. f. 48. 



Hab. ? 



Severai sliells have been named after the rude enemy of Achilles 

 as slgnificant of their deformity. The Triton under consideration, 

 though it has quite a hump-backed appearance from the prominence 

 of the dorsal tubercies, is ho\vever beautifully granulated, the granu- 

 lated ridges being especially neatly sculptured in passing over the 

 tubercies and varices. 



Triton moritinctus. Trit. testd ovato-oblongd, ventricosd, varice 

 unico elevato ; spird depressd ; anfractibus supernh plano-angulatis. 



