BY AV. L. MAY. (il 



resemble?, but may be distinguished by its mere cylindrical 

 form, more numcious ribs, and the absence of the sutural 

 bead. 



PI. XY., fig. 11. 



ESTK.V MICROCOSTA, sp. noV. 



Shell small, rather piipoid, solid, pinkish, the apical 

 Avhorls are the darkest, the last half of the body whorl 

 nearly white. Whorls five, rounded. The first two form 

 a smooth proto-conch ; the three adult whorls are regularly 

 axially ribbed, with very fine sharp ribs, which are some- 

 what oblique, and become evanescent on the base. Aper- 

 ture almo.st round, lip expanded all round. 



Length, 2.5; breadth, 1.2 mill. 



Type, with a number of others, from 100 fathoms 

 seven miles East of Cape Pillar. This is closely related to 

 J-J . krrshairi. It differs principally in the much more 

 numerous and finer ribs, and rounder mouth, and its rather 

 more cylindrical form. E. t(i<infinirti, Tenison Woods 

 (Eiilii)i(i), is much larger, more jiyramidal, with excavate 

 sutures. 



PI. XV., fig. 12. 



ESTEA PERPOLITA, Sp. UOV. 



Shell small, white, highly polished, elongate, blunt, 

 the apex b3ing much flattened. Whcrls four and a half, 

 rounded, especially the penultimate; suture well im- 

 preis&d ; mouth roundly ovate, lip a good deal expanded. 



Length, 1.8; breadth, 1 mill. 



Type, with 12 others, from 50 fathoms ofT Thouin Bay, 

 and three from 100 fathoms off Cape Pillar. 



A species principally distinguislied by its rounded 

 whcrls, flattened summit, and hieh j^olish, and differs from 

 its near relative E. nihini inla , Tate and INIav, in being 

 shorter and blunter. 



PI. XV., fig. i;j. 



ESTEA LABROTOMA, pp. nov. 



Shell minute, conical, solid, yellcwish-brown, smooth, 

 shining. Whorls four, rounded, suture well imjne-sed, the 

 body whcrl being rather restricted below the sutur?. 

 Aperture roundly ovate, oblique, surrounded by a very 

 broad expanded li)), which has a curious deep indentation 

 where it joins the body whorl. This remarkable featui'e 

 is diagnostic. 



Length, 1.4 ; breadth, .7 mill. 



Type, with 14 others from Frederick Ilenry Bay, 

 taken from roots of the giant kelp. 



PI. XV., fi^. 14. 



