102 Transactions. 
example, in the disposition of the columella, which is somewhat obscured 
in the holotype of C. acutangulum. Specific rank for your shell is, in 
my opinion, justified.” 
The shell is named after New Zealand's pioneer in modern conchology. 
Calliostoma suteri var. fragile n. var. (Plate 10, fig. 2, a, b, c.) 
1918. Basilissa n. sp. (Sut.), N.Z. Geol. Surv. Bull. No. 20, pp. 90, 94. 
Shell thin and fragile, imperforate. Protoconch of a little over one 
whorl, granulated, not shining (indicating probably a previous horny 
envelope), nucleus globose and generally a rather prominent varix just 
before brephic stage, which commences with two spiral carinae, and many 
unequal longitudinal ribs; during second post-embryonic whorl a third 
carina develops on upper shoulder, and a fourth at suture below. On 
space. Sides of aperture uniformly thin, nacreous and lirate within. 
Columella oblique, with slight tubercle at base, even less reflexed and 
notched than in C. suteri. Inner lip extending as a slight callus over 
cp tract; not crossing parietal wall Umbilical depression very 
slight. 
Height, 11 mm. ; height of aperture, 4 mm.  Diameter—major, 11 mm. ; 
minor, 9mm. Holotype: Diameter—major, 15 mm. ; minor, 13 mm. (frag- 
ment of a large specimen). 
Holotype and many imperfect paratypes from Ardgowan in author's 
collection. Also found at Pukeuri (specimen in Dr. Marshall's collection) 
and at Target Gully. i | 
Remarks.—Mr. Marwick reported on this shell, * This is the Basilissa 
n. sp. of Park's Target Gully list, and one of those in his Ardgowan list. 
This shell has the secondary moniliform spirals coming in on the later 
whorls, as is the case with C. acutangulum Suter; but its concave outline, 
sharper beads, thinner spirals, and the tendency to a smooth band on 
the base render it more easy of separation than is the case with the 
previous species." 
Calliostoma cancellatum n. sp. (Plate 10, fig. 3.) 
Shell fairly solid, imperforate, outlines pagodiform. Only two whorls of 
the unique specimen remain, but the sculpture of these is very distinctiv © 
Во spirals апа axials аге very strongly developed, sharp and thin, giving p 
