196 



supernis subgranulosis, ultimo angulato ; apertura | long, testse, 

 lunata ; columella subrecta, tenui, modice truncata, alba rufo 

 marginata. Long. If ; lat. |- poll. Hah. Liberia. 



A very peculiar shell, both in its conical form and in its mark- 

 ing. The broad silvery band, which is in itself enough to dis- 

 tinguish it, as well as the delicate revolving threads, resemble the 

 hydrophanous bands, on the Bulimi from the Philippine Islands, 

 but they do not disappear on being wet. 



AcHATiNA PARiTURA. Tcsta elougata, tenui, nitida, dilute 

 cornea, longitrorsum concinne lirata ; spira turrita, ad apicem 

 obtusa, anfr. 7 convexis, ultimo dimidiam long, testae adequante ; 

 sutura profunda ; apertura angusta, subauriculata ; columella 

 valde arcuata, involuta, canalem basalem efformante. Incola 

 vivipara. Long. 1 ; lat. /g- poll. Hob. Buried under leaves or 

 in earth, during the dry season, near the sea, Fishtown, Liberia. 



Closely approaches A. Hugeli, Pfeif. but is more slender, 

 more obtuse at apex, more coarsely and regularly striate, and 

 with fewer whorls. In numerous specimens of the animal pre- 

 served in spirits, the young are plainly seen in the oviduct, 

 already escaped from the egg. 



Mr. Sowerby has also described a viviparous Bulimus (Malac. 

 Mag.) which Dr. Perkins also collected at Cape Palmas. 



Amnicola ciliata. T. parva, elongata, imperforata, fusco- 

 viridi ; spira acuto-conica, anfr. 6 subangulatis ad angulum serie 

 aculearum recurvarum armatis, ultimo ad peripheriam acute 

 carinato ; apertura circulari, labro nigro. Long. ^ ; lat. ^ poll. 

 Hah. Deea River, Liberia, on the muddy margins. 



A beautiful little species, grouping with a somewhat larger 

 one from New Zealand, described by me as Melania corolla^ 

 and a smaller one from Jamaica, found by Prof Adams, and 

 named by him M. spinifera. A further examination of the 

 aperture and operculum, and also the animal of the New Zealand 

 species, satisfies me that they ought all to come under the genus 

 Amnicola. 



Ampullaria balanoidea. T. solida, imperforata, globosa, 

 decollata, fusco-olivacea, fasciis numerosis saturatioribus cincta, 

 lineolis undulatis granulosis confertis insculpta ; spira elevata, 

 anfr. superstitibus duobus ventricosis, ad suturam appressis ; 

 apertura rotundato-ovata, labro acuto ; columella arcuata, plan- 



