$04 Zoological Society. 



importance. The cancellated sculpture is wider and more prominent, 

 whilst the ridges are more sharp]}- 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. testa sub/usifor7ni, varicibus quntuor ; 

 spird exsertd ; anfractibvs transversim grunoso-liratis, angulatis, 

 ad angnhim titberculatis, tuberculis vulidis, valde prominentibus, 

 nnfractuum totd supei-ficie subtiUssime grauulosd ; columella alba, 

 subexcavatd, leviter rugosd, callositate superne armatd ; ca/iali 

 longiusculo, subascendente ; labro intus leviler deiiticuluto. 

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



Hab. ? 



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 jiassing over the 

 tubercles and varices. 



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

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

 transversim crenulato-costatis, ad angulum fortiter tuberculatis, 

 tuberculis aciitis, in/erne evanidis, transversim subtiliter sulcatis ; 

 rubidd, varicibus albimaculatis ; epidermide subsetosd ; columelld 

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

 tinctd ; canali subelongato, subcontorto ; aperturce 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 

 duobus ; spird elevato-turritd ; anfractibus superne planissimo- 

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

 j)ressis, duplicatis, crenulatis, interstitiis excavato-sulcatis ; albidd, 

 fuscescente cceruhoque varie tinctd ; columelld alba, subrugosd ; 

 canali longiusculo ; aperturd rotundd ; labro iiitus dentato. 



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



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



Hab. North coast of New Holland. 



This IS a very characteristic species, witii 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 ; 



