— 251 — 



3 Margarita (Mach.) bella Verkriizen. T. globoso- 

 coiioidea, solidula, alba, inargaritacea, spira leviter producta ; 

 anfr. 5 subangulati, liris spiralibus carinaeformibus, in ult. 4, 

 lineisque elevatis distantibus longit. clathrati, superi regulariter 

 crescentes, ult. quani in M. obscura minus depresso, basi lineis 

 circiter 10 spiralibus sat impressis, lineisque arcuatis decussatus; 

 umbilicus magnus, profundus, circularis, a basi leviter definitus; 

 sutura distincta sed haud profunde impressa; apert. inferne 

 dilatata, utrinque distincte angulata; labro tenui irregulariter 

 indentato, interno supiue leviter indentato. — Diam. 7, alt. 

 6,5 Mm. 



Margarita bella Verkriizen Jahrb. Mal. Ges. II p. 225, — Sars 



Norv p. 137 T. 9, F. 4. — Friele Arch. Nat. 1876 p. 314. 

 Machaeroplax obscnra var. Verrili Trans. Conn. V p. 531. 



Hab. litora Norvegiae. 



4. Margarita cancellata Jeffreys. Testa depresse 

 conica, anguste sed profunde umbilicata, tenuiuscula, opaca, haud 

 nitens, spira depressula, apice regulari, compresso, laevi, pallide 

 lutescenti-fusca, ,liris spiralibus circa 20 striisque incrementi 

 lainellosis obliquis fortioribus sculpta. Aufractus 5—6 convexi, 

 ultimus ^/5 testae occupans. Apertura rotundato-ovata, supra 

 angulata, iuferne ad columellam angulato-eifusa , labro subex- 

 panso, leviter incrassato, columella strictiuscula , ad parietem 

 adnata; umbilicus angustus, sed profundus et anfractum penul- 

 timuni exhibens. — Alt. 2, diam. 3 Mm. 



Troclius (Machaeroplax) caucellatus Jeffreys Proc Zool. Soc. London 

 1883 p. 96 T. 20, F. 4. 

 Hab. Josephine Bank Oceani Atlantici. 



5. Margarita cincta Philippi T. orbiculato-conoidea, 

 parum soUda, semipellucida, submargaritacea, partimiridescens; 

 anfr. 7 regulariter crescentes, sutura profunda discreti, rotundati, 

 striis tenuissimis et cingulis pluribus elevatis, 3 in anfr. spirae, 

 10 in ult. cingulati, superi liris longit. cancellati, umbilico cre- 

 nato, patente; apert. suborbicularis, intus iridescens, labro tenui, 

 columella leviter retiexa. — Alt. et lat. 7 Mm. 



Trochus cinctus Philippi En. I p. 185 T. 10, F. 20 (fossilis). — 



Locard Cat. p. 822. 

 Trochus amabilis Jeffreys Br. Conch. III p. 300 T. 61, F. 6. — 

 Solariella luaculata S. V Wood , Sohariuni Cahindrelli Conti fide 

 Jeffreys. 



Hab. in abyssis sinus Biscayensis. 



6. Margarita cinerea Couthouy. T. depresse 

 conoidea, tenuiuscula, obscure cinerea, spira aliquantum elevata, 

 apice acutiusculo; anfr. 6 subangulati, liris spiralibus sat elevatis 

 acutis, in ult. 6, in penult. 3 cingulati, lineis longitudinalibus 

 subtilissimis et densissimis decussati; sutura distincta, canalicu- 

 lata; anfr. iilt. amplus, i»eripheria subcarinatus , basi planatus 

 lirisque spiralibus parvis illa umbilicum infundibuliformem arcte 



