— 172 - 



parvus, angustus, lira acuta fere semicirculari cingulatus, per- 

 foratione vix conspicua. — Alt. 1,25, diam. 1,50 Mm. 

 Citlma Adamsi Jeffreys Pr. Z. S. 1883 p. 111 T. 20, F. 19. 

 Hab. in Oceano Atlantico (Porcupine St. 16, 17, 17a). 



3. Citlina carinata Jeffreys. T. compacto-pyrami- 

 data, tenuis, opaca, vitracea, alba. spira turrita, luteo-fusces- 

 cente, apice regulari, sub lente subtiliter granulata, striis spira- 

 libus nisi ad basin nullis. Anfr. 5 - 6 aiigulati, super angulum 

 planati, regulariter crescentes. (Icon laud. anfractum penulti- 

 mum et ultinumi biangulatos exhibet). Sutura valde profunda. 

 Apert. quadrangularis, ad basin acute angulata, labro externo 

 tenui, retiexiusculo, columellari tenui. Umbilicus capuliformis*), 

 lira parum distincta cingulalus, in perforationem parvam desi- 

 nens. — Alt. et diam. 2 Mm. 



Citlma cariiiata JeftYeys Pr. Z. S. 1883 p. 111 T. 20, F. 9. 

 Hab. in Oceano atlantico (Porcupine St. 16). 



4. Citlina cincta Jeffreys. T. globoso-conica, tenuis, 

 opaca, subvitracea, albida, spira turriti, apice contorto, liris 

 spiralibus paucis distantibus 3—6 in anfi-actu ultimo, 1—2 in 

 penultimo , una prope suturam magis prominente, carinam quasi 

 formante, in anfractibus spirae subtuberculata cingulata, Anfr. 

 5 tumidi, sensim accrescentes, sutura profunda discreti, ultimus 

 2/5 testae superans. Apert. circularis, ad basin obtuse angulata, 

 labro externo tenui, leviter expanso, super columellam retlexo, 

 labio coluraellari adnato; urabilicus paruni profundus, lira semi- 

 circulari cinctus, in perforationem profundam abiens. — Alt. et 

 lat. 2 Mra. 



Citlma ciiicta Jeffreys Pr. Z. S 1883 p. 111 T. 20, F. 8. 

 Hab. in Oceano atlantico (Porcupine Stat. 16). 



5. Cithna naticiforinis Jeffreys. T. obtuse pyrami- 

 data, spira excentrica, tenuis, semii^ellucida , vitracea, alba, 

 laevis, liris nonnullis spiralibus ad basin, spira brevissima, apice 

 bulboso. Anfr. 3 convexi, sutura profundissima discreti, rapide 

 crescentes, ultimus ^j^ testae occupans. Apert. subcircularis, 

 magna, expansa, labro tenui, superne angulato, labro interno 

 membranaceo. Umbilicus magnus, lira distincta acuta interdum 

 duplici cinctus, in perforationem angustain sed profundam desi- 

 nens. — Alt. 1,5, diam. 2,5 Mm. 



Cithna iiaticiformis Jeffreys Pr. Z. S. 1883 p. 112 T. 20, F. 11. 

 Hab. in Oceano atlantico (Porcupine St. 17a). 



4. G-enus Iphitus Jeffreys 1883. 



Testa conica, apice peculiari, cylindrico, longitudinaliter 

 striato, tuberculis seriatim ordinatis sculpta; operculum corneum, 

 paucispiratum, nucleo laterali. 



*) Saucer-chapecl, Jeffr. 



