J2 



rum ad 12 majovibus, albicantibus ; striis incrementi confertis, 

 laxis : intus livida, albido radiatim lineata ; margine vix crenulato, 

 pallescente. Long, ^, lat. ^-, alt. ^ poll. Hab. Rio Janeiro. 

 Allied to S. plicata, Quoy, which, however, is described as 

 solid, its summit recurved, its ribs equal, its interior pale horn 

 color, radiated with pairs of reddish lines, and is found at Tonga- 

 taboo. 



Siphonaria normalis. Testa parva, tenuis, symmetrica, basi 

 rotundata, elevato-conica, fusco-cinerea, creberrime costato-stri- 

 ata, striis subequalibus : subtus fundo castaneo, limbo marginali 

 mustelino, cicatrice bene impresso ; margine acuto, ad canalem 

 siphonalem angulato, albido liheolato. Long, ^j-, lat. ^j, alt. ■£$ 

 poll. Hab. Sandwich Islands. 



A small, delicate species, very different from any I have seen. 

 Its circular base, regular conical form, very numerous rib-striae, 

 and peculiar pale chocolate color distinguish it. 



Emarginula aspera. Testa parva, tenuis, depresso-conica, 

 fuliginosa ; costis elevatis quadratis plerumque duplicibus ad 10 

 albidis, ad intervallos striis crebris decussantibus exasperatis ; 

 vertice subcentrali, acuto, recurvo : intus glauca, albido radiata ; 

 margine denticulato : incisura angusta, profunda, intus in cana- 

 lem versus apicem producta. Long. -£$, lat. T 3 ^, alt. ^ poll. 

 Hab. Sydney, New South Wales. 



Much like E. rugosa, Quoy, in size and form, but differs in 

 color, sculpture, and the larger size of the notch. 



Emarginula fungina. Testa parva, solidula, elliptica, cine- 

 reo-virens ; costis radiantibus, parvulis, quarta quaque majori, 

 rotundatis; apice mediani, erecto : intus viridula, cicatrice mus- 

 culari intrinsecus atri-limbata ; margine smaragdino, eleganter 

 crenulato : incisura lata, modice profunda, intus in canalem ad 

 verticem producta. Long. 4, lat. |, alt. | poll. Hab. Upolu. 



A very pretty species, somewhat resembling E. parmophoidea , 

 Quoy, but differs in the dark coloring along the inner margin of 

 the muscular impression, forming the figure of a toadstool, and in 

 the greater development of the notch. 



Emarginula ossea. Testa crassa, rudis, albida, quadrangulari- 

 elliptica, costis radiantibus numerosis inequalibus acutis, et striis 

 incrementi decussata ; basi arcuato, margine crenulato; cicatrice 



