82 



4. E. eommensalis, sp. nov. Pi. iv., fig/2. 

 Shell elongate-pyramidal, strongly curved in two directions,^ 

 translucent, vitreous, fawn-coloured with contained animal ; 

 whorls ten, moderately convex ; body -whorl globosely inflated, 

 thence rapidly tapering to the acute apex ; aperture semi-circular ; 

 outer lip much ecurved medially ; the front of the aperture is 

 well-rounded, but the margin is slightly reflected, so that seen 

 from behind there is the semblance of basal constriction. Long., 

 5 ; lat., 2 mm. 



Habitat and Localities. — Commensal with Amhlypneustes, spp., 

 Holdfast and AldingaBays {R. Tate, manyexs.) ; Port Stephens, 

 KS.W. (Aust. Mus. !). 



Affinities. — From figures and description, this species resembles 

 E. parva, Sowerby, but seems to differ by its more ventricose 

 body-whorl and semi-circular aperture. 



5. E. indisepeta, sp. nov. Pi. iv., fig. 8. 



Shell elongate-pyramidal, slightly curved in two directions, 

 translucent, vitreous, colourless. Whorls eight, nearly flat, of 

 regular increase ; apex acute ; base convex and attenuate at the 

 front ; aperture narrowly oval ; outer lip much curved medially. 



Long., 4-25; lat., 1*5 ; long, of aperture, 1-5. 



Locality. — Shell-sand, Holdfast Bay (R. Tate, one ex.) ; 

 Frederick Henry Bay, Tasmania ( W. L. May /) ; Port Stephens, 

 N.S.W. (Aust. Mus. !). 



Not much unlike E. eommensalis, but the whorls are much 

 flatter and the aperture of a different shape. From figures and 

 description this shell has an analogue in the European E, 

 incurva, but the aperture appears to be proportionately less elon- 

 gate in the Australian shell. E. Petterdi, Beddome, must be a 

 near ally ; it is diagnosed as follows : — " Shining white, curved ; 

 apex rounded; whorls 10; aperture narrowly pyriform ; lip 

 scarcely reflected ; columella straight. Long., 4 ; lat., 1 ; apert., 

 1 m." 



FAMILY PYRAMIDELLrD^. 



Genus Eulimella. 



Of the diagnostically-known Australian species of this genus, 

 five species are recorded from North Australia in the " Challenger 

 Mollusca," and two others from New South Wales — E. 

 "moniliformis, Hedley, and E. pulchra. Brazier. In South Aus- 

 tralian waters there occur two species, viz. : — 



1. E. moniliformis, Hedhy, P.L.S., N.S. W., 1891, p. 247, t. 19, figs. 1-3. 

 Holdfast Bay, in shell-sand (R.T.). 



