NATICA. 83 



markings more scattered. The spiral callus is very narrow, 

 and placed higher up in the umbilicus. 



44. NOTATA, f. 168, Sotverby. — Parva, solida fere alba, 

 ovato-subglobosa, lineis tribus castaneis tenuibus cincta, 

 strigillis flexuosis supra infraque longitudinaliter notatis, 

 spira brevi, anfractibus convexis ad suturam plicatis; columella 

 recta, angusta, ad umbilicum inconspicue lobata, callo spirali 

 mediano, subdepresso. — Very neatly ornamented with linear 

 spirals and cross flexuous markings. 



45. DiLWTisfiANA, f. 166, Recluz? — Obliqua, subcompressa, 

 ad suturam inconspicue plicata fulva, albo fasciata, fasciis 

 maculis castaneis articulatis; callo spirali crasso, columella 

 ad umbilicum lobata. — ]More oblique and compressed in front 

 than N. Traillli ; in these respects differing from N. canrena, 

 of which the specimens might be taken for miniatures. 



46. UNiMACDLATA, f. 105, Reevs. — Ovato-acumiuata, fumoso- 

 fusca ; spira producta acuta, anfractibus declivibus, umbilico 

 angustiusculo, callo spirali valido, columella flexuosa, superne 

 late callosa, medio lobata ; lobo castaneo unimacidato. — With 

 a bright spot of colour on the columellar pad of the spiral 

 callus. 



47. CuMiNGiANA, f. 31, Recluz. — Globoso-subpyramidata, 

 latissime castaneo fasciata ; spira subacuminata, anfractibus 

 declivibus; apertura semilunari, castaneo marginata, co- 

 lumella medio lobata, umbilico medio reflexo, lobato, intus 

 subplanato. — A beautiful chestnut-banded species, with a lobe 

 on the columella, but no spiral callus in the umbilicus. 



48. PowisiANA, f. 32, Recluz. — Globosa, X. Cumingiance 

 simillima sed brevier : umbilico latissimo, callo spirali tu- 

 midissimo. — This species and the preceding are so much 

 alike, that the difference, which chiefly consists in the pro- 

 minent spiral callus of the former, is hardly at first perceived. 



49. CHiNENSis, f. 9, Lamarck. — Oblique subovata, pallida, 

 maculis quadratis triseriatim dispositis picta, spira brevi, 

 acuta, anfractibus rapide expansis, ad suturam depressis, pli- 

 catis ; apertura umbilico calloque spirali maximis ; fauce 

 purpurea. — Distinguished by the rapid increase of the whorls, 

 the largeness of the aperture, the umbilicus and its callus, 

 and the rows of square bright spots. 



