T R I T N 



Specie* 31. (Fig. a and b, Mus. Cuming.) 



Triton trilineatos. Trit. testd clavato-fusiformi, vti- 

 ricibus tribus ; spird breviusculd ; anfractibus superui 

 angulatis, ad an.gv.him compresso-tuberculatis, trans- 

 versim plano-liratis, liris subtilissime crenulatis, in- 

 tcrst/tiis lineis tribus elevatis scu/ptis ; n/bitlii. fiisco 

 variegatd, varicibusfusco-maculatis; columella lutes- 

 cente-albd, costatd ; canali subelongato, leviter as- 

 cendente; labro fortiter denticulato-costato ; aperture 

 fauce alba. 



The trilineated Triton. Shell clavately fusiform, 

 with three varices ; spire rather short ; whorls an- 

 gulated at the upper ;iart, compressly tubercled at 

 the angle, transversely flatly ridged, ridges very 

 finely crenulated, interstices sculptured with three 

 raised lines ; whitish, variegated with brown, va- 

 rices spotted or rather blotched with brown ; colu- 

 mella yellowish white, ribbed across ; canal rather 

 elongated, slightly turned upwards ; lip strongly 

 denticulately ribbed within ; interior of the aperture 

 white. 



Reeve, Pro. Zool. Soc, 1844. 



Hub. Philippine Islands ; Cuming. 



This is a strongly marked species, with the denticu- 

 lated sculpture of the lip extending into the aperture 

 after the manner of ribs ; and the body of the shell is 

 crossed by flattened ridges, between each of which are 

 three very characteristic raised lines. 



Species 32. (Mus. Cuming.) 



Triton olearium. Trit. testa fusiformi-turritd, sub- 

 ventricosd, varice uniai ; spird subobtuso-elatd ; an- 

 fractibus superrie plano-angulatis, ad unguium leviter 

 tuberculatis, transversim costatis, costis latiusculis, 

 prominentibus, subrugosis, costis interstitiisque ele- 

 vato-striatis; rubido-fuscescente, varice. fusco alboque 

 alternatim maculald ; columella purpureo-nigricante, 

 albirugosd ; canali brevi ; aperture fauce alba; labro 

 iutus purpureo-nigricante, albidentato. 



The oil-vessel Triton. Shell fusiformly turreted, 

 rather vtntricose, with a single varix ; spire rather 

 obtusely raised ; whorls flatly angulated at the 

 upper part, slightly tuberculated on the ano] e , 

 transversely ribbed, ribs rather broad, prominent, 



somewhat wrinkled, ribs and the interstices be- 

 tween them sculptured with raised stiia-; light 

 reddish brown, varix alternately spotted with brown 

 and white, columella purple-black, wrinkled with 

 white ; canal short ; interior of the aperture white ; 

 lip purple-black within, toothed with white. 



Desha yes, Note in new edit. Aniin. sans vert., vol. ix. 

 p. 628 to 630. 

 Murex olearium, Linna?us. 

 Murex rostatus, Born. 

 Murex partheuopus, Dillwyn. 

 Triton succinctus, Lamarck. 



Hub. Mediterranean. 



Variety /I (Fig. 32.) 



Testa crassiuscula, solida ; varicibus seuis septemve, ro- 

 tundissimis, prominentibus ; costis minus elevatis, tu- 

 berculis fortioribus. 



Shell rather thick, solid ; varices six or seven in number, 

 very round and prominent ; ribs less elevated, tu- 

 bercles stronger. 



Hub. Island of Taheite, Pacific Ocean (found on the 

 reefs) ; Cuming. 



1 quite agree with M. Dcshayes in referring this 

 species to the Murex olearium of Linna?us, but there is 

 too strong an affinity between the Mediterranean and 

 South Sea varieties to allow of their being described as 

 separate species. The Mediterranean variety is a light 

 shell with the tubercles but faintly developed, whilst 

 the South Sea variety exhibits that higher condition ot 

 colour and sculpture which chaiacterizes the conchology 

 of a hotter climate ; the shell is larger and more solid, 

 the varices stronger and more numerous, and the purple- 

 black colouring of the lip and columella is richer and 

 more intense. 



(Fig. 30 b, Triton lampas, see PI. IX.) 



Species 33. (Mus. Cuming.) 

 Triton pyrum. Trit. testa subpyriformi, ventricosd, 

 varicibus solidis quatern s ; spird subobtuso-elatd ; 

 anfractibus supern't angulatis, ad aug'i/um compresso- 

 tuberculatis, transversim cos/a/is. costis plants, sub- 

 obsoletis, interstitiis elevato-striatis ; luteo-rubente, 



May 1844. 



