— 11 - 



spira producta. cauda exserta, columella obscure plicata ; operculo 

 irregulariter ovato, apice obtuso, iiucleo inconspicuo. — Sars. 



Meyeria alba Jeflreys sp. T. solidula, nivea, elon- 

 gato-fusiformis, spira turrita, sensim attenuata, apice acuto; 

 anfr. 7 angulato-convexis , ultimo spira duplo longiore basin 

 versus sensim attenuato, cauda elongata recta, apice acuminato 

 leviter recurvo; sutura angusta, subobliqua. Apert. piriformis, 

 dimidiam testae aequans, inferne valde coarctata vel in canalem 

 angustum excurrens, labro externo tenui medio sat expanso; 

 columella fere recta plicis medianis 2 obliquis approximatis 

 parum prominulis ornata. Superficies lineis spiralibus numerosis, 

 tenuissimis, undulatis ubique obducta plicisque longitudinalibus 

 10—12 latis, rotundatis, in medio anfractuum tuberculato-pro- 

 minulis, basin versus evanidis sculpta. Long. 2b. Mm. — G. 

 0. Sars. Long. .52 Mm. 



Tritonium pusillmn M. Sars Christ. Vid. Selsk. Forli. 1858, p. 39 (iiomeii). 



Latirus albus Jeffreys apud Thomsou, Depths of the seas p. 464 

 (woodcut) 1873. 



LathjTus albellus Dunker et Metzger Nachr. BI. Mal. Ges. 1874, 

 p. 11. - Jahrh. Mal Ges. 1874, p. 150, T. 7, P. 4. - Metzger 

 Pommerania p. 257, T. 6, F. 4, p. 264 (Holzschnitt). 



Meyeria pusilla G. 0. Sars MoU. Norv. p. 245, T. 13, F. 8. 



Meyeria alba Kobelt Ic p. 32 T. 6, F. 21. 



Hab. in aquis profundioribus Maris Germanici. 



2. Familia Purpuridae. 



Testa plus minusve ventricosa, solida, spira brevi, anfrac- 

 tibus haud varicosis, ultimo in canalem brevem recurvum desi- 

 nente, columella subtus planulata. Operculum corneum, ovatum 

 vel subrhomboideum, nucleo prope marginem externum sito. 



1. Genus Purpura Lamarck. 



1. Purpura baemasto ma Linne sp. T. ovata, crassa, 

 ponderosa, spira parva, breviter conica, apice parvo ; anfr. 7 — 8, 

 spiraliter plane lirati, sutura distincta impressa discreti, superi 

 plus minusve distincte angulati, penultimus ad angulum serie 

 nodulorum armatus, ultimus permagnus, ovatus, superne exca- 

 vatus, dein angulatus, ad angulum serie tuberculorum varie 

 armatus, saepe bi- vel tri- vel quadrifariam tuberculatus , basi 

 contractus, circa rimam umbilicalem crista valida circumdatus. 

 Apert. ovata, plerumque utrinque canaliculata, columella parum 

 concava, supra et infra distincte, medio minus distincte callosa, 

 supra plica callosa intrante munita, dein laevis; labrum supra 

 impressum, basi eftusum, marginem versus liratum, margine 



