
205 . 
NOTES ON SOUTH AUSTRALIAN MARINE MOLLUSCA, 
WITH DESCRIPTIONS OF NEW SPECIES.-~ PART IV. 
By Jos. C. Verco, M.D., Lond., F.R.C.8., Eng. 
[From “Transactions of the Royal Society of South Australia,” 
vol. wax., 1906.] 
[Read October 2, 1906.] 
Puares VIII. ro X. 
Family PATELLID Ai, Carpenter. 
OM Genus PaTeLia, Linné. J 
( 2--vdeldelcioniseus-tramoserica, Martyn. 
Patella tramoserica, Martyn, Univ. Conch., t. 16; Reeve, 
Conch. icon., Mon. Patella, 1854, pl. xiii. f. 27; Adcock, Hand- 
list of Aquatic Moll., S. Aust., 1893, No. 392; Pritchard and 
Gatliff, Proc. Roy. Soc., Vict., 1903, xv. (n. s.), p. 191; Helcton- 
iscus tramosericus, Martyn, Pilsbry., Tryon’s Man. Conch., 1891, 
xiii., p. 142, pl. Ixx., figs. 49, 50, 51, 52; Tate and May, Proc. 
inn. Soc., N.S.W., 1901, p., 441. 
Patella diemenensis, Philippi, Zeit. f. Malak, 1848, p. 162 
type locality, Hobart; Pilsbry., ‘ryon’s Man. Conch., xili., p. 155 
Patella variegata, Reeve, Conch. Icon., 1854, Mon. Patella, 
pl. 16, f. 36, a, b, and c. 
Patella antipouwm, WK, A, Smith, Voy. Hrebus and Terror, 
Moll., p. 4, t. 1, f. 25, 1874, teste Pilsbry., op. cit., p. 142. 
Pritchard and Gatliff, loc. cit., give Helcioniscus melanosto- 
mus, Pilsbry., T'ryon’s Man. Conch., xiii., 1891, p. 151, pl. xxxi.., 
figs. 67 and 69 as a synonym. 
This is a very variable shell. The large yellowish or rose- 
tinged shell figured by Reeve is comparatively rare in South 
Australia. Some are wholly salmon-coloured without any rays, 
others have dark chestnut rays. There is a horn-coloured 
variety with yellow-brown rays, and fine black lines, mostly 
in pairs in some of the interspaces. The black lines may be 
quite wide, and be in all the interspaces, and they may be 
interrupted or reticulate. The variety variegata of Reeve 
is more common ; of a yellowish tint, rather translucent, with 
more or less interrupted dark purplish rays and very irides- 
cent interior. These merge into a larger, more hemispherical 
form of stouter build, recalling Philippi’s description of P. 
diemenensis, which seems to be our usual variety, and these 
into one with very broad, dark, liver-coloured rays separated 
by narrow bands of white. 
COW ZAL / 
Tieleromiacusillibrata, spec. nov. Pl. x., figs. 6 to 14. Ly/¢ 
le 
Shell minute, rather solid, conical; apex blunt, scarcely 
anterior; posterior slope scarcely convex, anterior scarcely 
concave; no radial sculpture; some irregular growth lines, 
) 
