110 
South Australian Shells. 
S.A. NAT , VOL. XV. 
Sept. 20te , 1934. 
C. leucostigma Philippi 1845 (Menke) (Elevchus). PI. 1, 
fig. 5. “The White-branded Cantharidus.” Slender, elongated- 
conical, solid, polished, imperforate; fawn coloured, protoconch 
darker, with radiating pure white or pink blotches, or sparsely 
scattered spots; all over very finely spirally striate and with 
distant superficial linear sulci, four to six on the penultimate 
whorl; whorls about seven, slightly convex; body whcrl rounded 
or subangulated at periphery; mouth ovate, angular above, broad¬ 
ly rounded beneath, iridescent and sulcate within; columella ar¬ 
cuate, dentate below. Height 23, diam. 11 mm. (Type locality 
—South Australia. We designate Encounter Bay). A small 
•variegated shell, mottled with red, white and olive; the interior 
•of a pearly greenish blue colour. It may be a form of C. eximws. 
C. gracilis Anton (Trochus) . PI. 1, fig, 6. “The Slender 
Cantharidus.” Small, slender like C. leucostigma (eximius) but 
lacking white markings on the spire. Height 17, diam. 7 mm., 
or smaller. Like a miniature C. badius in colour. (Type local¬ 
ity—We designate Middleton, South Australia). Philippi noted 
that C. gracilis approaches nearly C. bellulus Dunker, in its 
turreted shape and the opening of the mouth; still somewhat 
narrower the individual whorls and certainly invalid, but dis¬ 
tinctly rounded, and quite differently coloured; usually cross 
lines occur, five on the penultimate, ten on the last whorl; in 
fresh examples there arfe microscopic closely- crowded cross 
streaks; colour of shell olive-green, here and there with red and 
whitish streaks and spots; white streaks may be absent: throat 
white; mouth pearly green within. A colour variety of C. leu¬ 
costigma. 
C. apicinus Menke 1843 ( Monodonta ). “The Pointed 
Cantharidus.” Imperforate, elongated, rather solid, smooth; 
shining, grayish, or brownish-yellow, with numerous narrow ob¬ 
liquely longitudinal red lines; whole surface microscopically spir¬ 
ally striate, the striae coarser on the base; whorls eight to nine, 
nearly flat, upper whorls lighter; sutures pink; spire turreted, 
straight sided, acute; sutures linear, sometimes white margined: 
body whorl rounded at the periphery; aperture slightly exceed 
ing one third the total length of shell, oval, beautifully iridescent 
within, smooth, not sulcate; columella with a subacute tooth 
below the middle. Height 18, diam. 9 mm. Not uncommon, 
beach, from Robe (South Australia) to Rottnest (Western Aus¬ 
tralia); also dredged alive to 22 fathoms. (Type locality— 
Western Australia). The margin of the aperture for about two 
millimetres is generally white with fewer broader red lines, and 
on the base near the mouth the red and white may be more or 
less tessellated. There is often a narrow reticulated supra-sut- 
