LEI'TOTHYRA. 

 COLLONIA LENTICULA Gould, 1861. 



Testa minuta, soliclu, iilha, globoso-leuticularis, uhi<jiic striis con- 

 fertis tenuissimus cincta ; anfr. 4, depresso-convexis, cito crescentibus j 

 basi oonvexo, imperforato, callo copioso munito ; apertura parva, 

 ciivularis. Diam. 4, alt. 2 mill. (Gould.) 



Chinese Seas, 



COLLOXFA (jrANTlLLA Gould, 1861. 



Testa minuta, solida, depresso-orbicularis, rosacea, sulcis pallidior- 

 ibus circ. 4 cincta ; anfr. 4, vix convexis, peripheria obtusa ; basi 

 convexo, pallidiore, arete perforate ; apertura circularis ; labro 

 crasso ; colurnella robusta declivi. Diam. 3, alt 2 -|- mill. (Gould.) 



Simon's Bay. 



Triiuo NOCTURNUS Gould, 1861. 



Testa parvula, globoso-conica, solida, rufo-fuscescente et rosaceo- 

 alternatim strigata ; apice albo ; anfr. 5, convexis, sulcis equalibus 

 arati.s; sutura impressa; basi convexo, imperforato, concentrice 

 stria to ; apertura subcircularis ; columella expansa, argentata, granu- 

 lata, extus erecta. Operculum osseum, pauci-spirale, apice excentrico,. 

 extus granulato. Alt. 7 mill. (Gould.) 



Simoda, Japan ~ 



Evidently not a Leptotliyra. Sowerby considers Collonia variegata 

 A. Ad. a synonym; and gives a figure of a Leptotliyra. which might 

 represent almost anything in the genus; but which, together with 

 his description, certainly has nothing to do with Gould's species. 



