TRITON.— Plate XIII. 



Species 50. (Fig. a and b, Mus. Cuming.) 

 Triton exaratus. Trit. testd subtriyono-fusiformi, 

 varicibus duabus ; spird elevato-turritd ; anfractibus 

 supern'e plaiiissimo-anyii/atis, ad tmyulum subnodosis, 

 transversim liratis, /iris compressis, duplicatis, cre- 

 nulatis, interstitiis excavato-sulcatis ; albidci, fusces- 

 cente caruleoque varie tinctd ; columella alba, sub - 

 ruyosd ; canali lonyiusculo ; aperturd rotundd ; labro 

 intus dentato. 

 The ploughed Triton. Shell somewhat triangularly 

 fusiform, with two varices ; spire elevately turreted ; 

 whorls very flatly angulated at the upper part, 

 slightly knobbed on the angle, transversely ridged, 

 ridges compressed, duplicate, crenulated, with the 

 interstices excavately grooved ; whitish, variegated 

 with light brown and blue ; columella white, 

 slightly wrinkled ; canal rather long ; aperture 

 round ; lip toothed within. 



Variety j3. (Fig. 50 b.) 

 Testd niyricante-fuscd, albibalteatd. 

 Shell blackish brown, belted with white. 

 Hub. North coast of New Holland. 



This is a very characteristic species, with the trans- 

 verse ridges standing out in bold relief, and the upper 

 part of the whorls peculiarly flat and indented at the 

 sutures. 



Species 51. (Mus. Saul.) 



Triton ficoides. Trit. testd triyono-ficiformi, varici- 

 bus quinis ; spird brevi, obtusd ; anfractibus dorsim 

 tumidiusculis, transversim liratis, liris nodosis, va- 

 rices super duplicatis ; columella nodosa et ruyosd, 

 infern'e luteo-sanyuineo tinctd; canali brevi; labro 

 intus fortiter dentato. 



The fig-like Triton. Shell triangularly fig-shaped, 

 with five varices ; spire short, obtuse ; whorls ra- 

 ther swollen at the back, transversely ridged, ridges 

 knobbed, duplicate on the varices; columella no- 

 duled and wrinkled, stained with yellowish blood- 

 red towards the lower part ; canal short ; lip 

 strongly toothed within. 



Reeve, Pro. Zool. Soc, 1844. 



Hab. Africa. 



M. Kiener should have been sure of this shell being 

 the Ranella caudata of Say, before he ventured to ques- 

 tion the generic appropriation of that species. It is 

 quite another thing, and I much doubt if a shell of such 

 bright and vivid colour were ever found within the lati- 

 tude of New York. The true Ranella caudata has many 

 characters however in common with the Tritons, and I had 

 myself erroneously figured it in Plate XV. of the genus 

 (Fig. 57), before I felt satisfied that it really belonged to 

 a small group of Ranellse of which the R. Muriciformis 

 is the type. 



