MOLLUSCA. 37 



hand into the water. I have observed both the varieties of this species alive. In the spotted variety, the 

 muzzle is reddish towards the tip, the body is opake pearly white, the eye-peduncles mottled with dark 

 red ; in the common variety there are three large red-brown blotches on the fore part of the body, and the 

 under surface of the foot is light brown with a cross-like mark of darker brown. A. A. 



J o' 



20. TRITON, DeMontford. 



1. Triton testudinarius. PI. IX. Kg. 3 a, I. Trit. testa, trigono-fusiformi, longicaudata, varicibus 

 senis septemve, spira obtuso-elongata, anfractibus superne concavo-declivibus, transversim noduloso-costatis, 

 et tuberculatis, tuberculis grandibus, costis super varices duplicatis, apertura parviuscula, labro intus fortiter 

 tuberculato-dentato ; rufescente-fusca, columella intense rufo-purpurea, albirugosa. 



Hab. China Sea. 



An interesting species, having the form of T. tripus, with the colouring of T. cynoceplialus, 

 which is always well characterized by the deep purple colouring of the columella. 



2. Triton pyrultth. PI. X. Pig. 17. Trit. testa clavseformi, longicaudata, varice unica, anfractibus 

 superne declivibus et rotundatis, transversim subthiter crenato-liratis et multinodatis ; albida, fuscescente 

 hie illic pallide tincta. 



Hab. Eastern Seas. 



Very like T. canaliculatus, except that the spire is not canaliculated. 



3. Triton monilifer. , Trit. testa clavato-pyriformi, varice unica, anfractibus superne angulatis, Kris 

 crenatis subdistantibus cingulatis, ad angulum acute phcato-nodosis, labro columellari subincrassato, aper- 

 tura ovah, intus corrugato-dentata ; albida, varicibus rafo-fusco tessellatis. , 



Hab. Eastern Seas. 



Distinguished by its pyriform growth, and general detail of sculpture. 



21. RANELLA, Lamarck. 



In Ranella the tentacles are commonly somewhat closer together than in Triton, and 

 the head is longer and narrower than in Murex and Fusus ; the eyes in some species are 

 nearly basal, but are generally placed about the middle of the tentacles on their outer sides ; 

 the siphon is short and directed upwards, the foot larger than in Triton, Murex, or Fiisus, 

 and considerably dilated both before and behind ; the mantle does not appear to be furnished 

 with fimbriated processes as seen in some Murices. In some species the trunk is enormously 

 developed, whereas in others it is not protruded in the usual condition of the animal. In 

 colour the JRanellce are usually of a pale brown, marbled and mottled with deeper brown. 

 The operculum is ovate, horny, with a lateral nucleus and semicircular elements. 



1. Eanella albtvaricosa. PI. XIII. Kg. 4. Eeeve, Conch. Icon. Ranella, pi. 1. f. 2. The animal 



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