204 Zoological Society, 



importance. The cancellated sculpture is wider and more prominent, 

 whilst 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 suhfusiformi, varicihus quatuor ; 

 spird exsertd; anfractibits transversim granoso-liratis, angulatis, 

 ad angulum tuherculatis, tuherculis validis, valde pr-ominentihus , 

 anfractuum totd superjicie subtilissime granulosa ; columelld alba, 

 subexcavatd, leviter rugosd, callositate superne armatd ; canali 

 longiusculo, subascendente ; labro intus leviter denticulato. 

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



Hah. ? 



Several shells have been named after the rude enemy of Achilles 

 as significant of their deformity. The Triton under consideration, 

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

 of the dorsal tubercles, is however beautifully granulated, the granu- 

 lated ridges being especially neatly sculptured in passing over the 

 tubercles and varices. 



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

 unico elevato ; spird depressd ; anfractibus superne piano- angulatis, 

 transversim crenulato-costatis , ad angulum fortiter tuberculatis, 

 tuberculis acutis, inferne evanidis, transversim subtiliter sulcatis ; 

 rubidd, varicibus albimaculatis ; epidermide subsetosd ; columelld 

 rufo-aurantid, macula grandi, nigricante-purpured, albirugosd, 

 tinctd ; canali subelongato, subcontorto ; aperturac fauce rufo- 

 aurantid ; labro intus fortiter dentato. 

 Conch. Icon., Triton, pi. 13. f. 49. 

 Hab. Philippine Islands ; Cuming. 



This shell, which is not uncommon in collections, approximates 

 very closely to the Triton cynocephalus ; it is however specifically di- 

 stinct. The whorls of the Triton moritinctus are very strongly tu- 

 bercled, the tubercles being disposed in waved longitudinal rows, 

 whilst in the Triton cynocephalus the tubercles have more the appear- 

 ance of regular nodules. 



Triton exaratus. Trit. testd subtrigonofusiformi, varicibus 

 duohus ; spird elevato-turritd ; anfractibus superne pianissimo - 

 angulatis, ad angulum subnodosis, transversim liratis, liris com- 

 pressis, duplicatis, crenulatis, interstitiis excavato-sulcatis ; albidd, 

 fuscescente cceruleoque varie tinctd ; columelld alba, subrugosd ; 

 canali longiusculo; aperturd rotundd; labro intus dentato. 



Conch. Icon., Triton, pi. 13. f. 50. a and b. 



Var. /3. Testd nigricante-fuscd, albibalteatd. 



Hab. North coast of New Holland. 



This is a very characteristic species, with the transverse ridges 

 standing out in bold relief, and the upper part of the whorls pecu- 

 liarly flat and indented at the sutures. 



Triton ficoides. Trit. testd trigono-ficiformi, varicibus quinque; 



