60 Sowerby on several new Shells. 



Shell turrited, with fine close-set, longitudinal oblique striae ; 

 volutions six, the three upper ones small, rounded, smooth ; the 

 lower volutions rather ventricose ; sutures distinct ; aperture si- 

 nuous, obtusely angulated above and below, peristome reflected, 

 continuous, entire, no part of it adhering to the last volution, hav- 

 ing eight teeth within, three in the outer lip, three, of which 

 two grow together, in the inner lip, one in the upper and one in 

 the lower angle ; last volution bicarinated, the upper carina small, 

 forming the lower angle of the small, oblique umbilicus. 



4. Natica patula ; Testa suborbicularis, subdiscoidea, spira. 

 brevissima, anfractibus quatuor. superioribus fere obtectis, ulti- 

 mo maximo, superne rotundato, subtus rotundato-carinato ; um- 

 bilico patulo, callo columellari spirali, apice planulato : apertura 

 magna, ultimo aufractu superne interrupts, infra oblique producta. 



A single specimen of this shell has been kindly lent to us by Mr. 

 Millard, of Bristol, who is not acquainted with its locality : we 

 have seen another specimen in Mr. De Ferussac's collection, which 

 was brought from South America by M. De Humboldt. 



Shell suborbicular, rather discoid, with a very short spire; vo- 

 lutions four, the upper ones nearly covered, the last very large, 

 rounded above and its lower edge rather keeled, with a very 

 rounded keel ; umbilicus spreading, its columellar callus spiral, 

 flattened at its lower end : aperture large, interrupted at its upper 

 part by the last volution, obliquely produced at the lower part. 



5. Melania Icevissima. Testa oblonga acute couica, anfractibus 

 septenis, convexiusculis, laevissimis, olivaceis, longitudinaliter in- 

 terrupts fusco-fasciatis ; suturis laevibus ; apertura suboblonga, su- 

 perne acuta ; labio columellari, praecipue superne, incrassato. 



Shell oblong, acutely conical, whorls seven, slightly convex, 

 very smooth, olive green, with interrupted longitudinal dark 

 brown bands ; sutures smooth ; aperture rather oblong, upper part 

 pointed ; columellar lip thickened, particularly at its upper ex- 

 tremity. 



x his shell was found in abundance adhering to the stones form- 

 ing the bed of the rivulet (Rio de la Guayra) which runs through 

 La Guayra. Two specimens have been presented to the British 

 Museum., by Dr. N. 11. Cheyne. 



