TRITON.— Plate XIX. 



The varices of this shell are unusually broad, and the 

 >s are wider apart on the back of the whorls than on 

 e side here represented. 



Species 91. (Mus. Cuming.) 

 Triton tessellatus. Trit. testd elongatd, varice nulld ; 

 spird acuminata, acutd : anfract dm a striis longitudi- 

 nalibus et transversis subtilissime reticulatis ; albidd, 

 maculis grandibus rubido-fuscis subirregulariter tes- 

 sellatd; canali Itrcvi, subcecal to. 

 The tessellated Triton. Shell elongated, with no 

 varix ; spire sharply acuminated ; whorls very finely- 

 reticulated with longitudinal and transverse stria' ; 

 whitish, rather irregularly tessellated with large 

 spots of reddish brown ; canal short, a little re- 

 curved. 

 Reeve, Pro. Zool. Soc, 1844. 



Hah. Island of Burias, Philippines (found under stones 

 at low water) ; Cuming. 

 This shell may be easily recognised by its rude, tes- 

 sellated spots. 



Species 92. (Mus. Cuming.) 



Triton convolutus. Trit. testu fusiformi , ieniiissimd, 

 varicibus novenis vald'e conspicuis ; spied elongato- 

 acuminatd ; an/ractibus lineis subacutis elevatis, ere- 

 berrimis, cingulatis ; alba, pellucidd ; lamind columel- 

 Irtri late expansd ; labro subtilissime crenulato ; ca- 

 na/i brevi, recurvo. 



The convoluted Triton. Shell fusiform, very thin, 

 with nine very conspicuous varices ; spire elon- 

 gately acuminated ; whorls encircled with rather 

 sharp close-set raised lines ; white, transparent ; 

 columellar lamina widely expanded ; lip very finely 

 crenulated ; canal short, recurved. 



Hroderit, Pro. Zool. Soc, 1844. 



Hab. Island of Zebu, Philippines (found under a stone 

 at low water) ; Cuming. 



It is scarcely possible to conceive a more beautiful and 

 delicately transparent shell than the Triton convolutus. 

 In structure is somewhat similar to that of the Triton 

 Scalariformis, but the sculpture is of a quite different 

 character, the whorls being encircled with fine close-set 

 raised lines, which arc not latticed with any longitudinal 



Species 93. (Mus. Cuming.) 



Triton Quoyi. Trit. testd oblongd, varicibus quaterni? 

 quinisve ; spird mucronatd ; an/ractibus gibbosis, cos- 

 tis loncjitudinalibusct transversis confertim decussatd, 

 costis ad decussationem nodulosis ; aurantio-fuscd , 

 canali brevissimo ; labro intus noduloso-dentato. 



Quoy's Triton. Shell oblong, with four or five varices ; 

 spire pointed; whorls gibbous, closely decussated 

 with transverse and longitudinal ribs, noduled at 

 the point of crossing ; orange-brown ; canal very 

 short ; lip nodulously toothed within. 

 Triton viperinum, Kiener (not of Lamarck, fossil). 



Hab. New Holland ; Quoy. 



This shell, M. Deshayes informs us, is by no means 



the living analogue of Lamarck's fossil Triton viperinum. 



Species 94. (Mus. Cuming.) 



Triton bacillum. Trit. testa elongato-clavaformi, so- 

 lidd, varicibus duabus ■ spin! elongatd, subretusd -. 

 an/ractibus obtuso-granulosis ; ccerulcscente-albd ; ca- 

 nali brevissimo, recurvo ; aperturd breviusculd. 



The little club Triton. Shell elongately club- 

 shaped, solid, with two varices; spire elongated, 

 rather blunt ; whorls obtusely granulated ; bluish 

 white ; canal very short, recurved ; aperture rather 

 short. 



Reeve, Pro. Zool. Soc, 1844. 



Hab. — ? 



This is the only species of Triton I have noticed with 



a single varix on each side. 



Species 95. (Mus. Cuming.) 



Triton carduus. Trit. testd globosci, ventricosd, varice 

 nulla; spird brevi, acutissimd ; an/ractibus lungitu- 

 dina/ilcr costatis, transversim stria/is, striis valde 

 elevatis, costas super submuricato-nodosis ; albidd. 

 fuscescente varid ; columelld excavald ; canali brevi. 



The tuistle Triton. Shell globose, ventricose, with 

 no varix ; spire short, very sharp ; whorls longitu- 

 dinally ribbed, transversely striated, stria 1 very 

 elevated, rather prickly knobbed on the ribs ; white, 

 variegated with light brown ; columella excavated ; 

 canal short. 



Reeve, Pro. Zool. Soc, 1844. 



Hab. ? 



A rather thin shell, of very sharply cancellated scul- 

 pture. 



