312 
Mangelia alternata, Tenison-Woods, Proc. Roy. Soc., ‘Tas- 
mania, (1878) 1879, p. 39; Tate and May, Proc. Linn. Soc., New 
South Wales, 1901, vol. xxvi., p. 369. 
Dredged in from 14 to 26 fathoms in Gulf St. Vincent 
and Investigator Strait; in Encounter Bay in about 5 fath- 
oms (W. Reed). ‘Taken on the beach of Banks Island, Spen- 
cer Gulf. 
I think, probably, M/. tasmanica grades from a long, 
narrow form with sharply-angulate whorls through M. jack- 
soniensi®, and then through J/. mitralis into M. australis, 
and forms one variable species. 
Le + Beh ee 
Mangilia_adcocki, Sowerby. 
eerie acs ces Sowerby, Proc. Mal. Soc., London, 1896, 
vol. ili., fig. 18; Pritchard and Gatliff, Proc. Roy. 
Soc., Victoria’ bisogy i 1900, p. 174, ‘Western Port, etc.” ; Tate and 
May, Proc. Linn. Soe., New South Wales, 1901, vol, ’xxvi., p- 
370, ‘North coast of Tasmania.’ 
Mengilioe ke Adams and Angas, Proc. Zool. Soc., London, 
1863, 419, pl. xxxvii., fig. 6 (non Hinds). Type locality— 
“Rapid. Bay, & Vincent Gulf.” 
Dredged in 14 and in 22 fathoms Investigator Strait 
and taken abundantly on the beach on Troubridge shoal, and 
of Antechamber Bay, Kangaroo Island. 
Mr. Gatliff records its variations. 
Peper es eenottatrat lliti; n. sp. Pl. xxviii, fig. 9. TY2 
Shell small, white, solid, shining, elongate-oval, blunt, 
of 5 whorls, including a protoconch of 2 smooth convex 
whorls, and a yery flatly convex apex. Spire-whorls sloping 
convex. Suture distinct, subcanaliculate, undulating, mar- 
gined. Body-whorl nearly as long as the spire, slightly at- 
tenuated at the base and truncate. Aperture oval, slightly 
narrowed behind, wide in front, notched, without a canal. 
Outer lip straightly convex, with a shallow, wide sinus be- 
hind, sharp, not inflected, smooth within. Inner lip nar- 
row, smooth, applied, free at the front, with a callus pos- 
teriorly at the junction with the outer lip. Columella sub- 
concave, joining the body-whorl at a very open angle. Spiral 
sulcations equidistant, 9 in the penultimate, 17 in the body- 
whorl. Axial accremental striz, distinct under the micro- 
scope, cross the spirals, sinuous, comparatively distant, espe- 
cially on the body-whorl. 
Dim.—ULength, 5°25 mm.; of aperture, 2°25 mm.; 
breadth, 2°25 mm. 
Locality. Type from 17 fathoms Backstairs Passage, 
with 2 others; Gulf St. Vincent, 3 good; in 15-20 fathoms 
