816 MR. E. A. SMITH ON MARINE SHELLS [Nov. 5, 



the variety (rosea) measures 22 millims. in length, whilst a very 

 small one is only 9 millims. long. 



The tuberculation is also subject to considerable variation. The 

 number of the transverse series of granules appears to be very con- 

 stant, there being invariably three principal rows in the upper whorls, 

 and seven in the body-whorl, but the size and number of the gra- 

 nules differ in various examples ; and this difference is not peculiar 

 to each form, but exists in shells belonging to the same variety. 



Reeve describes the tubercle-like nodules on the angle of rosea as 

 bipartite. This is scarcely correct ; for there certainly are two series 

 at this point ; and being situated rather closely together, they might 

 be considered single nodules subdivided. 



51. Triton (Simpulum) strangei, A.Adams & Angas, P. Z. S. 

 1864, p. 35. (Plate L. fig. 16.) 



Hab. Moreton Bay, East Australia. 



The whorls in this species are seven in number, and not four as 

 described by the authors of it. The four apical or nuclear volutions 

 are smooth, convex, and horn-colour ; the remaining three are some- 

 what concave beneath the suture, of a pale brown colour ; and the 

 varix on the labrum between the spiral ridge is stained with bright 

 red, and the canal with brown. 



The transverse costse are described by Adams and Angas as being 

 trisulcate. This, however, is not the case ; for there are only two 

 sulci, making each of the ridges trilirate, the central liration being 

 most prominent. The costse are prettily undulated, owing to their 

 being prominent at intervals where they cross the longitudinal sub- 

 plications ; there are two of them round the middle of the penulti- 

 mate whorl, and the one preceding it, and five on the last. The aper- 

 ture is white, and the columella furnished with a tubercle at both ex- 

 tremities ; the Andaman specimen, besides these, has a few interme- 

 diate ones. The labrum is strongly varicose, and has six coarse 

 lirations within. 



52. Torinia perspectiviunculus, var. (Plate L. figs. 17- 

 \7b.) 



Hab. Red Sea, Seychelles Islands, Philippines, Pacific Islands, &c. 



The Andaman and Seychelles specimens of this widely distributed 

 and very diversely shaped species are very depressed in form, similar 

 to the variety (planulata) figured by Hanley in Sowerby's 'The- 

 saurus Conchyliorum,' vol. hi. pi. 254. fig. 63. 



The operculum is very elongate-conical, having a marked resem- 

 blauce in form to a small Triphoris. 



53. Cyprea gangrenosa, Solander. 

 Hab. Zanzibar, Mozambique. 



54. Litorina uniwlata, Gray, Philippi's Abbild. ii. pi. 5. 

 figs. 17, 18 ; Reeve, Conch. Icon. figs. 67 b-d (?fig. 67«). 



Hab. North Australia, Philippines, and Society Islands. 



