TRITON. 



Plate XII. 



For Species 40, see Plate XIII. 



Species 41. (Mus. Cuming.) 



Triton constrictus. Trit. testd fusiformi , solidd, raid) 

 distortd, varicibus quaternis quinisve; spird attcnua/o- 

 acuminatd ; anfractibus yiblwsissimis, supemi anyu- 

 latis, liris latiusculis rudibus nodosis clathratis ; 

 fidi-d, epidermide subvelutind iiidutd ; labro columel- 

 lari latiiis ejepanso, aurantio-castaneo, subirregula- 

 riter granoso, grams albidis, grandibus, prominen- 

 tibus ; canali brevi, recurvo ; aperturd minimd, fauce 

 albd ; labro fort iter dentato et granoso. 



The hard-bound Triton. Shell fusiform, solid, very- 

 much distorted, with four or five varices ; spire at- 

 tenuately acuminated ; whorls very gibbous, angu- 

 lated at the upper part, latticed with rather broad 

 rude ridges ; yellowish, covered with a velvety 

 epidermis ; columellar lip rather widely expanded, 

 orange-chestnut, irregularly granuled, granules 

 white, large and prominent ; canal short, recurved ; 

 aperture very small, interior white ; lip strongly 

 toothed and granuled. 



Broderip, Pro. Zool. Soc, 1833. 



Hab. Monte Christi and Xipixapi, West Columbia 

 (dredged from sandy mud at the depth of from 

 seven to ten fathoms) ; Cuming. 



This species differs from the Triton cancellinus in 

 being a more solid and distorted shell, whilst the can- 

 cellated ridges are broader ; the enamel of the mouth 

 has a peculiar orange-chestnut tinge, and the granules 

 are much larger ; the canal is shorter, and the spire is 

 more elevated. 



turned upwards ; interior of the aperture white ; 



lip denticulated within. 

 Reeve, Pro. Zool. Soc, 1843. 

 Hab. China. 



Care must be taken not to confound this shell with 

 the Triton trilineatus, in which the dorsal tubercles are 

 more strongly developed, and which has no varix on the 

 back of the penultimate whorl. 



Species 42. (Mus. Cuming.) 



Triton .egrotus. Trit. tcstd subpyriformi, varicibus 

 validis duabus ; spird acutd ; anfractibus superni 

 anyulatis, transversim costatis, liris minutis tribus 

 vel quaternis inter costas decurrentibus, costis superis 

 tuberculatis, tuberculis inferne evanidis ; albidd, 

 fuscescente ma.cula.td ; columella plicatd ; canali sub- 

 elonyato, subascendente ; aperturd fauce albd ; labro 

 intus denticulato. 



The sickly Triton. Shell somewhat pyriform, with 

 two strong varices j spire sharp ; whorls angulated 

 at the upper part, transversely ribbed, with three 

 or four very small ridges running between the ribs, 

 upper ribs tuberculated, tubercles disappearing on 

 the lower; whitish, spotted with light brown; 

 columella plaited ; canal rather elongated, slightly 



Species 43. (Mus. Cuming.) 



Triton encausticus. Trit. testd pyriformi, varice 

 unicd depressiusculd ; spird roluiidato-depressd; an- 

 fractibus transversim costatis, tuberculoma seriebus 

 plurimis longitudinalibus armatis, inferioribus mi- 

 noribus ; albidd, fusco vari'e tinctd ; columelld Levi, 

 crassissim'e encausticd, aurantio-lutescente ; canali 

 elonyato, ascendente ; labro aurantio-lutescente, intus 

 denticulato. 



The enamelled Triton. Shell pear-shaped, with a 

 single rather depressed varix ; whorls transversely 

 ribbed, armed with several longitudinal rows of 

 tubercles, the lower of which are the smaller ; 

 whitish, variously stained with brown ; columella 

 smooth, very thickly enamelled, pale orange-yellow; 

 canal long, turned upwards ; lip pale orange-yel- 

 low, denticulated within. 



Reeve, Pro. Zool. Soc, 1844. 



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

 Cuming. 



The enamelled character of the mouth of this shell is 

 somewhat like that of the Triton tuberosus ; the form is 

 that of the Triton retusus. 



Species 44. (Mus. Cuming.) 

 Triton anus. Trit. testd ovutd, ventricosoyibbosd, dis- 

 tortd, varicibus tribus quinisve depressis ; spird acu- 

 minata; anfraetibus tuberculis grandibus irregulariter 

 clathratis, parte untied disco encaustico fimbriate 

 latissime expanse, ornatd; albidd, rubido-fuscofas- 

 ciatd ; coluntelld plicatd et yranosd ; canali brevi, 

 subitb ascendente; aperturd parvd, coarctatd ; labro 

 fortiter denticulato. 

 The old-woman Triton. Shell ovate, ventricosely 

 gibbous, distorted, with from three to five depressed 

 varices ; spire acuminated ; whorls irregularly lat- 

 ticed with large tubercles, anterior portion of the 

 whorls ornamented with a very widely expanded, 

 fimbriated, enamelled disk ; whitish, banded with 

 reddish brown ; columella plaited and granuled ; 



Mav 1844. 



