114 NERITA. 



regular ridges equalling the interstices, is remarkable for the 

 deeply cut wrinkles and large marginal teeth of the columel- 

 ]ar area. 



52. ORNATA, f. 13, Sowerby. — Grlobosa spiraliter costis nigro 

 tessellatis lirata, spira parum elevata, anfractibus declivibus; 

 apertura alba, labio externo crasso superne unidentato, area 

 columellari transverse rugata ad marginem dentibus magnis 

 armata. — The ribs are closer and less deeply cut than in 

 N. Deshayesii, the spire shorter and its whorls more sloped, 

 the wrinkles on the inner lip thin and less prominent, the 

 teeth much less prominent. 



53. GROSSA, f. 12, Linncvus. — Crassa, oblique ovato- 

 globosa ; costis maximis, fere sequalibus distantibus, et versus 

 aperturam minoribus iuterstitialibus, griseo tessellatis lirata, 

 spira subelevata anfractibus paucis, declivibus, apertura sub- 



,ovata, area columellari valide rugata, dentibus marginalibus 

 magnis, labio externo crasso, ad suturam elevato, tum depresso, 

 dentibus lateralibus superne conspicuis. — Very coarsely ribbed, 

 and tessellated with grey on the ribs. Our specimen has 

 an orange semicircle on the columellar plate, and an orange 

 tip. 



54. cosTATA, f. 46, Chemnitz. — Grioboso-subovata, soli da, 

 ad spiram depressa ; costis latis elevatis scabriusculis nigris, 

 interstitiis excavatis lirata; spira brevissima, depressa, 

 apertura subrotunda; area columellari partim subaurantia, 

 dentibus marginalibus prominentibus, labio externo intus 

 rudissime dentate. — This broad black-ribbed species is quite 

 ringent with coarse, prominent teeth in the aperture. 



55. PLiCATA, f. 79, 80, Linnceus. — Globosa crassa albido- 

 fulva vel rubro nigroque super costas tessellata, costis rotundis 

 regularibus lirata, spira subelevata, acuta, apertura sub- 

 angusta, area columellari tumida rudissime rugata, margine 

 validissime dentato arcuatim producto, labio externo intus 

 dentibus quinis magnis productis armato. — In this species 

 the spire is more produced and the spiral ribs smaller than 

 in the preceding, while the prominent teeth on the arched 

 columella, and the strong teeth or plaits inside the outer lip, 

 contract the inner aperture. 



56. KiNGENS, f. 68, Reeve. — Parva globosa tenui-lirata 

 purpureo nigrescenti obscure marmorata ; apertiura angusta 



