154 



fuscescens, costulis radiantibus ad 25 obtusis, nodosis, subequali- 

 bus : intus hepalica ; cicatrice musculari inconspicua. Long. -|, 

 lat. I, alt. -1 poll. Hab. Burnt Island, Orange Harbor. 



This might be regarded as the young of S. Lessoni. But be- 

 sides essential differences in the animal, the great inequality of 

 the two sides, the peculiar position of the apex and the more 

 coarse and nodular ribs, give it a peculiar character. 



SiPHONARiA LEPiDA. Testa parva, tenuis, ovato-rotundata, 

 depresso-conica, cinereo-olivacea interdum violaceo lincta ; apice 

 submediano, obtuso ; costis radiantibus numerosis depressis, quo- 

 rum ad 12 majoribus, albicantibus ; striis incrementi confertis, 

 laxis : intus livida, albido radiatim lineata ; margine vixcrenulato, 

 pallescente. Long. 2?^, lat. /^j, alt. ^^ poll. Hah. 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. Tcsta parva, tenuis, symmetrica, basi 

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

 ata, striis subequalibus : subtus fundo castaneo, limbo marginal! 

 mustelino, cicatrice bene impresso ; margine acuto, ad canalem 

 siphonalem angulato, albido lineolato. Long, y^, lat. ^^j-, alt. -^-^ 

 poll. Hab. Sandwich Islands. 



A small, delicate species, very different from any 1 have seen. 

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

 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 denticulate : incisura angusta, profunda, intus in cana- 

 lem versus apicem producta. Long. ^^, lat. f'^, alt. .^^ poll. 

 Hab. Sydney, New South Wales. 



Much like E. rtt.gosa, 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, 

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



