46 PROCEEDINGS OF THE MALACOLOGICAL SOCIETY. 



Icvitcr arcnata, deinde recta; labrum crassum, intus glabrum, politum, 

 extus liratum, postice acute angulatum, post angulum profunde et late 

 sinuatum. Long. 9, maj. diam. 4 mm, Uab. — Mauritius. 



An angular shell, with raised spiral lirte and rather angular longi- 

 tudinal ribs. The specimen is very faintly coloured. Type in the 

 ^^atural History Museum. The name is taken from the capital of 

 the Island, Port Louis. 



4. Cythara articdlata, n.sp. PI. IV. Fig. 16. 



Testa suh-cylindi'aceo-fusiformis, postice acuminata, antice leviter 

 attenuata, luteo albida, fusco zonata, zonis plerumque parum con- 

 spicuis ; spira conica, ad apicem mucronata, deinde convexa ; anfi'actus 

 7, convexi, spiraliter lirati, longitudinalitcr costati, costis circa 12, 

 rotundatis, albido articulatis ; anfractus ultimus spiram superans, 

 leviter convexus ; apertura elongata, angusta, columella rectiuscula 

 valde rugosa ; labrum intus serratura, extus varicosum, sinu postico 

 brevissimo emarginato. Long. 9, maj. diam. 4 mm. Bah. — Mauritius. 



Of the typical form of the genus Cfithara. The fine lira3 becoming 

 whitish on crossing the ribs give to the latter an articulated appearance. 

 The colouring is generally rather faint and the markings not very 

 clearly defined. 



5. COLUMBELLA RoBIXLARI)!, n.Sp. PI. IV. Fig. 15. 



Testa robusta, anguste rimata, postice acuminata, glabra, pallida, 

 maculis fuscis et albidis irregulariter, couspersis picta ; spira longius- 

 cula, acuta ; anfractus 8, convexi, Igpves ; anfractus ultimus spiram 

 fere asquans, leviter ventricosa, ad basim contractus et conspicue 

 liratus, liris 6 ; apertura oblonga ; columella sinuata glabra, leviter 

 effusa ; labrum crassum, intus valde irregulariter dentatum. Long. 8, 

 maj, diam. 2-5 mm. Uab. — Mauritius. 



A smooth shell, with a rather stout body whorl and an acute 

 elevated spire. The lip is thick and strongly dentate within. The 

 colouring consists of a few irregular brown linear spots and white 

 flakes. The type is in the Natural History Museum. 



6. Sistrum angulatum, n.sp. PL IV. Fig. 3, 



Testa angalata, brevis, utrinque acuminata; spinicostata, albida, 

 fusco-maculata ; spira acute conica ; anfractus 6, angulati, spiraliter 

 lirati, longitudinaliter costati, costis plus minusve spinosis; anfractus 

 ultimus spiram superans, costis angulatis acute spinosis munitus, 

 ad basin attenuatus, brevirostratus, levissime recui-vus ; apertura 

 elongata ; columella Icevis ; labrum incrassatum, intus tuberculatum. 

 Long. 7, maj. diam. 5 mm. Hah. — Mauritius. 



This little angular, spinose shell appears to be distinct from any 

 hitherto described, though it is somewhat like a miniature form of 

 S. spinosum, A. Adams. 



7. AjirniPERAS Smithi, n.sp. PI. IV. Fig. 2. 



Testa elongata, obtuse angulata, utrinque brevirostrata, antice 

 attenuata, postice breviter acuminata, lajvis, polita, alba luteo-fusco 

 tincta ; rostrum posticum oblique biplicatum ; apertura angustiuscula, 

 antice paulo latior ; canalibus brevibus, emarginatis ; labrum crassius- 

 culum, rotundatum, utrobique la^vc, extus varicosum, album. Long. 10, 

 maj. diam. 4 mm. ITab. — Mauritius. 



