Columbelliilae. — Xassidae. 391 



iiec C. HaUacti Jeffr., teste Dall). Testa ovuta, sat ventricosa, solidula, spira 

 crassiuscula, apice acuto; albido-margaritacea ; anfractus 7, convexi, plicis 14 — Ki 

 angustis regularibus arcuatis, in anfractu ultimo caudam attingentibus sculpti, 

 inter plicas subtiliter striolati, sutura profunde impressa, ultimus spiraui duplo 

 superans, cauda brevi, recta, apice breviter emarginato; apertura ovato-oblonga, 

 spiram aequans, canali angusto, labro extra varicoso. — Long. 10 mm. 



Habit. : Sicilia: S. Vito, Palermo, 180 — 200 m (Monterosato) ; Malta 

 , (Carpenter). 



4(t. Fam. NASSIDAE Gray. Pes magnus, saepe post appendicibns duabus 

 tiliformibus terminatus; sipho longus; radula triseriata, dens centralis arcuatus 

 in margine convexo denticulis pluribus (8 — 20) armatus, laterales plerumque bicus- 

 pides, denticulis intermediis et in extremitate interna lamina accessoria muniti; 

 testa bucciniformis, canalis brevis, coluraella callosa, oblique truncata et basi 

 plicata; opercnlum corneum triangulum, unguiculatnm, marginibus saepe dentatis. 



Nassa Lam. Fes dongatus, ante arciiatus auf truncatus, angulis productis, 

 post appenclicihus duabus; octdi extra ad basin tentacidorum ; sipho longus angustus. 

 aperturam tesfae longe excedens; dentes laterdles radidae plerumqne bicuspides, cus- 

 pidibus distautibus, laminae acccssoriae conspicuae; tcsta imperforata, solida, ovala. 

 cauda confracfa, conforta, apertura oirda, laOrum incrassalum, saepe extra varicosuni. 

 infus sulcafum auf denficulafum, margo columcllaris in anfracfum ulfimum lafe rc- 

 jie.ms, post callo dentiformi munitus, cdlumella truncafa, ad basin plica obliqua 

 mnnifa; operculum ovafum aut unguicidafum , marginihus saepe denticidatis , nucteo 

 apicali, saepe fruncatum. 



Subg. Nassa s. str. Adms. (Sphacronassa Loc. p.). Apertura basi patula; 

 margo columellaris subrectus, supra plica instructus. 



1. N. mutabilis Petit (Buccinum mutahile L., B. injicdum Lam., X. mcdi- 

 terranca Risso, Sjjh. mutabdis, injtcda et globulina Loc, N. ebenacea Genn.). Testa 

 ovato-acuminata, solida, fusca, rufo ilammulata, ad suturam zona albida maculisque 

 fuscis magnis ornata; anfractus 8, superi 4 canceHati, inferi laeves, infra suturam 

 tantum spiraliter lirati et inflati, ultimus permagnus, basin versus spiraliter sul- 

 catus, cauda brevissima, appressa, valde excisa; apertura ovata, canali brevi 

 oblique recurvo; labro albido, simplici, obtuso, plerumque intus lirato, columella 

 arcuata, basi contorta, plicata, callo latissimo ultra insertionem marginis externi 

 producto obtecta. — Long. ad 30 — 40 mm. —■ Var. inflafa Lam. {Sphaer. in- 

 fiafa Loc), minor Mtrs. (Sph. gJobidina Loc), gibba Brocchi, etjenacea, albida, 

 macidafa Mtrs. 



Distrib.: Litoralis, 4 — 10 m, frequ. ; Atlanticum lusitanicum. — Fossilis 

 in tertiariis totius Europae meridionalis, Algeriae et Rhodi. 



Habit. : Litora Hispaniae: Algesiras (Hidalgo), Gibraltar, Malaga iMc 

 Andrew), Barcelona (Hidalgo); ins. balear. : Mahon, Menorca (Hidalgo); Alger, 

 Bona (Weinkaiff); litora Galliae, Koussillon: Leucate, Canet (BrcciuoY, Dtzim;., 

 Dfs.), la Franqui (P^pratx), hi Nouvelle (Locard), Cette (Granger), Palavas 

 (DoLLFUs), a Cette ad Aigues-Mortes (Dlbreuil), le Grau du Roi (Ci-^ment), 

 les Martigues (Petit), Marseille (Ancey), le Prado, le Pharo (Marion), St. Tropez, 

 St. Rapliael (Locahd), Cannes (Dautzenbrg); litora pedemontana (Jeffreys), 

 Nizza (Risso, V^rany), Genova (V^rany); Corsica (Payraudeau, Rkquien); 

 Sardinia (v. Martens, Gennari); Spezia (Capellini, Tapparone-Canefri); Livorno, 

 Elba (Appelius); Napoli (Scacchi); Sicilia (Philippi, Aradas et Benoit), Lampe- 

 du!?a (Aradas et Benoit); Malta, Pantellaria (Mc Andrkw); Tunis, sin. Gabt''s 



