378 Mr. Svvainson m several rare and mdescribed Shells. 

 Shell with nodulous plaits; inner lip thickened, striated, above 

 pointed; outer lip^inuated above, stnated withm ; apertuie 

 rosy within, stained with chesnut. ^ , . , ^.p , , ,, 

 The only perfect example I have seen of this beautiM she 1, 

 s in the TankerviUe collection. In size and shape it close v 

 resemWes S. variabilis (Zool. III. vol. i. pi. 10), but botK 

 [he lips and also the aperture are strongly striated; the 

 plaits are likewise more numerous. 



10. MiTRA edentida. . 



M testa cylindracea, striata; apertura spira longiore; labio 



exteriore inflexo ; columella edentula. 

 Shell cylindrical, striated; aperture longer than the spire, 

 outer lip inflexed; columella without teeth. 



Hab Mus. Dubois. „ , ;r. ^ xT- 



Th J very curious shell has all the habit of a Mitre, except the 

 plaits on the pillar, which are entirely wanting ; I know ot 

 no other genus with which it can be arranged with any na- 

 tural affinity. 



11 VoLUTA Z2/^«&m. (Exotic Conch, ined.) 

 V. testa ovata, laevi, grisea, lineis fuscis, undatis varia; apice 

 acuto; columella 4-plicata; labio exteriore supra emar- 



Shf iTovai, smooth, greyish, varied with undulated brown lines ; 

 apex pointed; pillar 4-plaited ; outer lip above emargmate. 



Voluta lugubris. Exotic Conch. Part 5. ined. 



A plain but very rare shell, not mcluded in Lamarck s Mo- 

 nograph of this genus; the plaits are remarkably tlnck, and 

 the tip of the spire is not papillary. 



12. VOLUTA Pusio. 



V testa ovata, flavescente, fasciis pallidis, transversis, maculis 

 flavis interstinctis cincta; anfractu basali obtuse nodoso; spira 

 brevissima, acuta ; columella multiphcata. 



Shell ovate, yellowish, with transverse pale bands, and small 

 spots ; body whorl armed with compressed obtuse nodules ; 

 spire very short, acute; pillar with many unequal plaits. 



This is a very remarkable Volute, somewhat allied toYoi.. Julva 

 and sulcata of Lamarck; its distinguishing characters rest 

 on the extreme shortness of the spire, and the compressed 

 nodules on the body whorl. t^ , • , 



The two last shells were recently sold at Mr. Dubois s 

 ■ Auction Rooms ; they are the only examples I have hitherto 

 seen of the species, and are now in the possession of W . J. 

 Broderip, Esq. 



LXXIX. No- 



