Veiieriilae. 119 



Habit.: Insiilae Aeolicae (Calcara). 



Circe SrHUjr. iQouhJia Ad. p.). Sij^hones parci inacqnaJca; [jalpi lahiales 

 bncci fri(/oni; hranvhiae inaequales, externa appendiculata ; pes trigonus, cornpressiis, 

 niaf/nus; h/fssns jtullus; testa rotundata auf tri(/ona , eompressa, concentrice leviter 

 sulcafa, epidcrmide fenui; umhones prominuli liaud multum recurci; hmida distincta, 

 lancedlata, area angusta; ligamentum partim exfernum, partim occultum; cardo in 

 ufra(pie vaha dcntihus S diverffenfihus, uJtimo in sinistra hifido, JafcraJihus anterio- 

 rihus in dexfra 1, in sinistra duohus. 



1. C. minima Forb. et Hly. {Venus minima ^lwi., V. pusiJJa Lasi., V. tri- 

 an(jularis Mn;., C//f]terea C//riJJi Scacchi, C//fh. apicaJis Vhil., CaJJista Ci/riJJi Brus.). 

 Testa obtuse trigoiio-orbicularis , compressa , solidula , concentrice plane costata, 

 costis inaequalibus, colore pervariabili, e lacteo ad purpureum, saepe radiata aut 

 variegata ; margo dorsalis utrinque declivis, ceteri rotundati ; umbones regulariter 

 incurvati ; lunula linea impressa definita ; ligamentum breve corneum. — Long. 

 11 — 12 mm. 



Distrib. : Atlanticum a Lusitania ad Magnani Kritanniam. 



Habit. : 4 — 205 org. prof. ; litora Hispaniae: Malaga (McAxdrew), Carta- 

 gena (McAxdrew, Jeffreys), Barcelona (Hidal(jo); ins. balear. : Mahon, Cone- 

 jera (McAndrew); Alger (Weinkauff) ; litora Galliae: etang de Thau (Petit), 

 Marseille, locis compluribus (Marion), Toulon (Petit, Doublier), Collioure, St. 

 Tropez , Nizza (Dubreuil) ; litora pedemontana (Jeffreys) ; Corsica (R6quien) ; 

 Spezia (Tapparon:e-Ca>'efri); Livorno (Appelius); Napoli (Scacchi, McAxdrew); 

 Sicilia: prom. S. Yito (Moxterosato), Palermo (Philippi), Messina (Seguenza), 

 Syracusa , Catania (Mc Andrew) , Sciacca (Monterosato) ; „Adventure Bank" 

 (Jeffreys); Malta, litora Tunetana (McAxdrew); Adria: Venezia (Weinkauff), 

 Trieste (Sars), Lussin piccolo (Grube), Zara (Sandri, Brusina), Pirano, Val Cas- 

 sione, Cherso, Ossero (Stossich), Lesina, Lagosta, Curzola (Heller); mare Aegeum: 

 Naxos, Paros, Serplio-Pulo, Sumboli, Lycia (Forbes), Creta (Spratt, Jeffreys). 



m 2. C. planata Kob. (CrassateJJa [AsfarfeJ pJanafa Calc, GouJdia modesta 

 Ad.). Testa subtrianguhi, solidula, costis concentricis insculpta, interstitiis costas 

 aequantibus, pallide fusca, maculis rubris paucis picta ; extremitas antica umbones 

 versus coucava. postice arcuata ; umbones acuti approximati ; margo ventralis con- 

 vexus intus crenulatus. — Long. 6,5 mm, alt, 6 mm. 



Habit. : Litora Tunetana (McAndrew, VSlain) ; Tripoli (Jeffreys). 



Dosinia (Scop.) Gray (ArfemisVoi.i). Mart/ines paJJii pJicafi, anfe papiUosi ; 

 siphones perJom/i , in fota Jomjitudine coaliti, orifieium hratiehiaJc papiJJis nonmdJis 

 sessiJihus, ancde undidatum ; paJpi parvi, trigoni, acuti ; hranchiac vaJde inaequales, 

 externa brevis, appendicuJata ; pes permagnus, Jafus, sccurifomiis, sine ipso vestigio 

 apparatus hyssiferi; festa sid)orhicidaris , compressa, concentrice sfriata, marginc in- 

 tigro, umhones prominuli, antrorsum versi; cardo dentihus tcrnis utrinque primariis, 

 in vaJva dextra Jateralibus 2 anticis rudimentaribus, in sinistra Jaterdi singido antico 

 forfi approximato. 



1. D. exoleta Romer {Venus exoJeta L. , Ci/therea cxoJcta Laji. , Artemis 

 (xoJeta Dksh., A. eofan Gay). Testa compressa, suborbicuhiris, solida, ooncentrice 

 lamelloso-striata, albido-flavescens, radiis maculisque inifo-fuscis interdum puk'her- 

 iime ornata, marginibus fere undique aequaliter arcuatis, hinuhi distincta cordata, 

 area perangusta, rimiformis; cardo validus, dentibus primariis dextra 4, sinistra 3, 

 lateralibus iiidistinctis. — Diam. 4o — .")0 mm. 



Distrib. : Athmticum a Lusitania usque ad Norvegiam. — Fossilis in 

 stratis tertiariis. 



