128 PROCEEDINGS OF THE MALACOLOGICAL SOCIETY. 



1 crassiusculis leviter nodulosis instructi, spiraliter dense lirati ; 

 anfractus ultimus brevis, basiin versus constrictus, obtuse angulatus, 

 brevissime rostratus ; apertura parva, intus lirata ; labrum externum 

 percrassum, ad marginem acutum, crenulatum, sinu postico prof undo, 

 mediocriter lato ; columella rectiuscula, rugosa. Long. 10, diam. 3 mm. 

 This shell has a very long spire, and a short mouth ; the outer 

 lip is thickened by a broad varix. 



8. Leptothyra viriddla, n.sp. PI. XI, Fig. 8. 



Testa minuta, subglobosa, vix umbilicata, crassa, viridula, maculis 

 minutis rufo-fuscis juxta suturam ornata ; spira brevis, obtusa ; 

 anfractus 4, convexi, primi keves, caeteri spiraliter anguste lirati, 

 sutura linearis sejuncti, ultimus rotundatus, spiram multo superans ; 

 apertura circularis ; peristoma crassum, laeve. Alt. 1-5, lat. 2 mm. 



A small pale-green shell, ornamented by a row of very minute 

 reddish -brown spots against the suture. 



9. Cyclostrema cristata, n.sp. PL XI, Fig. 9. 



Testa subgloboso-turbinata, alba, umbilicata ; spira brevis, gradata ; 

 anfractus 4^, primus kevis, pellucidus, caeteri pulcherrime cancellati, 

 superne leviter concavo - depressi, ubique carinulis spiralibus acute 

 creuulatis, et liris numerosis obliquis instructi, penultimus bicarinu- 

 latus, ultimus superne angulatus, deinde rotundatus, carinulis circ. 7 ; 

 umbilicus profundus, latiusculus, intus plicatus ; apertura circularis ; 

 peristoma intus laeve, extus crenulatum. Alt 3, lat. 4 mm. 



A little white shell of a somewhat globose form, crisply cancellated 

 with prominent spiral keel - ridges, which are almost spinously 

 tuberculated at the points where they are crossed by the numerous 

 radiating lirae. 



10. Ctclostrema dispar, n.sp. PI. XI, Fig. 10. 



Testa spiraliter discoidea, depressa, latissime umbilicata, alba ; 

 spira plauulata, fere laevis ; anfractus 5, duo apicales convexi, caeteri 

 planato-depressi, angulati, ad angulum carina acutiuscula marginati, 

 ultimus brevissimus, latus, infra angulum costis numerosis verticalibus 

 decoratus, ad basim convexiusculus, costis spiralibus 4 elevatis angustis 

 instructus, interstitiis transversim irregulariter sulcatis ; apertura 

 rotundata, intus lsevis, extus leviter producta ; peristoma crassius- 

 culum, ad basim fimbriatum. Alt. "75, lat. 2 mm. 



A very remarkable little shell of a depressed form, and widely 

 umbilicated. The top is flat, smooth, angular, and keeled at the 

 margin ; sides decorated with numerous vertical ribs ; base with four 

 very prominent keels, the interstices being crossed by irregular, 

 curiously waved sulci. 



11. VlTRINELLA SIMPLEX, n.Sp. PI. XI, Fig. 11. 



Testa minuta, subdepressa, rotundata, laevis, albida, sublate per- 

 spective umbilicata ; spira vix elata ; anfractus 4^, leviter convexi, 



