BY W. L. MAY. 61 



resemble?, but may be distinguished by its more cylindrical 

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

 bead. 



PI. XV., fi2-. 11. 



ESTEA MICEOCOSTA, sp. nOV. 



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

 whorls 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 

 axiall}- ribbed, with very fine sharp ribs, which are some- 

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

 ture almost round, lip expanded all round. 



Length, 2.5; breadth, 1.2 mill. 



Tyi^e, with a number of others, from 100 fathoms 

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

 E. I,-('rsJiav'i. It differs principally in the much more 

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

 more cjdindrical form. E. tasmamca, Tenison Woods 

 {Euluva), is much larger, more pyramidal, with excavate 

 sutures. 



PI. XV., fig. 12. 



ESTEA PERPOLITA, Sp. nOV. 



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

 the apex being much flattened. Whorls four and a half, 

 rounded, especially the penultimate; suture well im- 

 pressed; mouth roundly ovate, lip a good deal expanded. 



Length, 1.8; breadth, 1 mill. 



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

 and three from 100 fathoms off Cape Pillar. 



A species principally distinguished by its rounded 

 whorls, flattened summit, and high polish, and differs from 

 its near relative E. ruhicunda, Tate and Mav, in being 

 shorter and blunter. 



PI. XV., fig. 13. 



ESTEA LABROTOMA, Sp. nOV. 



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

 shining. Whorls four, rounded, suture well impressed, the 

 body whorl being rather restricted below the^ suture. 

 Aperture roundly ovate, oblique, surrounded by a very 

 broad expanded lip, which has a curious deep indentation 

 where it joins the body whorl. This remarkable feature 

 is diagnostic. 



Length, 1.4; breadth, .7 mill. 



Type, Avith 14 others from Frederick Henrv Bay, 

 taken from roots of the giant kelp. 



PI. XV., fig. 14. 



