PRIENE. 33 



behind, minutely denticulated within ; aperture oblong-ovate, 

 white within ; canal very short, recurved. 



Length 10, breadth 3 lines. 



Torres Straits, Australia. 



It differs from Epidromus Coxi by having coarser sculpture, 

 varices larger, more distorted at the third and fourth whorl from 

 the aperture by one slightly bulging to the right, and the other 

 to the left ; the outer lip thin at the edge, very much thickened 

 behind and more strongly crenulated at the suture. 



T. GLADIOLUS, Monterosato. 



A small flattened species, with dichotomous varices like the 

 true Ranellse, the canal short, recurved, the mouth rounded, the 

 whole shell lance-shaped, without sculpture, white. 



Length 12, diam. 5 mill. 



Alexandria, Egypt. 



This species has not } r et been figured. The description would 

 not be unlike a worn specimen of Ranella pusilla, Brod., which 

 is recorded from the Red Sea. 



T. VITREUS, FOXII. CANCELLATUS, all of Gray, Beechey's Yoyage, 

 110, 1839. 



These species have not been recognized by any author during 

 the forty years which have elapsed since they were published. 

 They have not been figured, 



T, OBSCURUS, A. Adams, South Coast of Africa ; T. PYRIFORMIS, 

 A- Adams, China; T. COMPTUS. A, Adams, China. 

 Not figured nor recognizable. 



Subgenus Priene, H. & A. Adams. 



This small group contains shells of comparatively large size, 

 thin, cancellate, white without any bands or spots of color, usually 

 more or less covered by an epidermis ; the operculum has a 

 terminal initial point. The species inhabit a somewhat limited 

 region, the West Coasts of South and North America, one of 

 them recurring on the Japanese coast. The rarity of varices 

 and general appearance of these shells indicate a passage into 

 the Fusidae, whilst they appear to connect more remotely with 

 the argus group of Ranella and with Buccinvm. 

 5 



