52 
AUSTRALASIAN ANTARCTIC EXPEDITION. 
Friginatica pisum sp. nov. 
(Plate VII., fig. 81.) 
Shell imperforate, globose, small, thin diaphanous. Colour, pale olive buff ; there 
are faint spiral lines apparently in the substance rather than on the surface. Spire 
elevated. Whorls apparently four, but the apex is eroded, rounded, parted by deeply 
impressed sutures. Aperture narrowly semilunate, outer lip simple thin, margins 
united by a thin callus, columella perpendicular, thickened and reflected, spreading 
a small lobe over the axis. Height, 3-5 ; diameter, 3-5mm. 
One specimen, containing the animal, from Lusitania Bay, Macquarie Island. 
With this was the young of a larger Friginatica like F. grisea but imperforate. 
Friginatica grisea von Martens. 
Natica grisea von Martens, Sitz. Gesell. Naturf. Freunde Berlin, 1878, p. 24 ; Id., 
Watson, “ Chalk” Hep. Zook, xv., 1886, p. 432, pi. xxviii., fig. 5 ; Id., von 
Martens, Deutsch. Tiefsee Exped., vii., 1903, p. 64, pi. iv., fig. 2 ; Id., Strebel, 
Zook Jahrb. Syst., xxiv., 1906, p. 143, xxv., 1907, p. 176 ; Id., Strebel, 
Schwed. Siidpol. Exped., vi., 1908, p. 61, pk v., fig. 66 ; Id., Hedley, Brit. 
Antarct. Exped., ii., 1911, p. 7 ; Id., Smith, “ Terra Nova ” Exped., ii.l Moll., 
1915, p. 69. 
Natica delicatula Smith, Collect. “ Southern Cross,” 1902, p. 206, pk xxiv., fig. 6 ; 
Id., Nat. Antarct. Expeck, ii., 1907, Moll., p. 5 ; Id., Thiele, Deutsch. Siidpol. 
Exped., xiik, 1912, p. 199, pk xik, fig. 16. 
This species apparently becomes narrower in proportion to length as growth 
proceeds, for specimens here examined (9mm. long) are intermediate, both in size and 
proportions, between individuals figured by Watson and by Smith. In accordance 
with a suggestion by the latter author they are now referred to N. grisea. 
Four were taken, September 3rd, 1912, in 25 fathoms, Commonwealth Bay ; and 
three, January 28th, 1914, in 240 fathoms, ooze, off the Shackleton Ice-shelf, in South 
Lat. 65° 20' and East Long. 95° 27k 
Pellilitorina rossiana Smith. 
Amauropsis (?) rossiana Smith, Nat. Antarct. Exped., ii., 1907, Moll., p. 5, pk i., fig. 6 ; 
Id., Hedley, Bee. Austr. Mus., viii., 1912, p. 139 ; Id., Smith, “ Terra Nova ” 
Exped., ii., Moll., 1915, p. 69. 
This species was originally and doubtfully assigned to Amauropsis. I have already 
suggested that the genus Pellilitorina might appropriately contain it. 
