126 PEOCEBDINGS OF THE MALACOLOGICAL SOCIETY. 



fere sequans, convexus, supra tenuissime spiraliter striatus, infra 

 inepte sulcatus ; apertura mediocriter lata, intus fusca, peristoma 

 arcuatum, acutum, columella leviter arcuata, callo albo late expanso 

 instructa. Long. 25, maj. diam. 10, apertura longa 9, lat. 4 mm. 



A shell with a very glossy surface, difiering from B. semiflammea, 

 Reeve, in the convexity of its whorls. This species has been placed 

 with B. diluta (Krauss), but it is pretty clearly distinguished by its 

 somewhat different form, and especially by the extreme fineness of 

 its spiral striae. It also bears some resemblance to B. similis, 

 Sowerby. 



COlumbella approximata, n.sp. 



Testa parva, elongata, levis, nitens, fulvo-fusca, spira elata, 

 acuta ; anfractus 6, primus minutus, rotundatus, sequentes leviter 

 convexi, sutura anguste impressa sejuncti; ultimus convexus, 

 spiram leviter superans, infra contractus, breviter rostratus, 

 apertura oblongo-ovata, peristoma tenue, columella rectiuscula. 

 Long. 10, maj. diam. 4 mm. 



This shell is somewhat like C. alhuginosa, Reeve, but of a more 

 solid substance ; its colour is plain brown without any indication 

 of longitudinal streaks or other markings. 



Triforis innocens, n.sp. 



Triforis innocens, n.sp. 



Testa sinistralis, mediocriter elongata, pura alba, anfractus 10 

 convexiusculi, tricingulati, cingulis exquisite et conspicue gemmatis, 

 anfractus ultimus supra convexus, infra contractus, brevicaudatus ; 

 apertura oblique ovata ; peristoma acutum, serratum ; columella 

 arcuata. Long. 5, maj. diam. 2 mm. 



This exquisite, pure white, little shell, beset with bead-like 

 granules, is something like T. madria, Bartsch, from which it differs 

 in form, the whorls being more convex, and the shell altogether 

 shorter in proportion to its length. 



The following I name simply as colour varieties of known 

 species ; — 



