ON BERTUAIS, GEN. NOV, 



Onoba egregia, a. Adams. Fig. II. 



"0. testa subulato-turrita, sordide alba; anfractibus 6, planiusculis, 

 spiralis, postice rotundate angulatis, lamellis longitudinalibus erectis 

 undulatis, interstitiis transversim pulcherrime striolatis instructis ; 

 suturis profundis ; apertura aperta, ovali ; peristomate tenui, continuo ; 

 labro subdilatato, margine simplici, undulato. 



I. 11. 



'■'■Hah. — Sato Ucbi, Japan, 17 fathoms; Yobuko, Japan, 10 fathoms. 



"A very charming species, with lamellar, undulating, longitudinal 

 riblets, and the interstices crossed by fine spiral elevated lines. The 

 aperture is somewhat expanded, and there is no external varix on the 

 outer lip." 



The specimen figured is in the British Museum. 



In all probability it will be found that several other species, some 

 described as Pyramidellidae, others as Rissoidse, should be placed in 

 this genus. 



