ORTMANN : TERTIARY INVERTEBRATES. 
235 
In Australian Tertiary deposits we have representatives of the group 
of V. triplicata in V. serissa Tate and V. tateana Johnst. (see Tate, 1889, 
p. 129, pi. 2, f. i, and p. 132, pi. 2, f. 5), the first from the Miocene beds 
of the River Murray Cliffs, the second from the supposed Eocene (?) beds 
of Tasmania. 
Fam. CANCELLARIIDzE Ad. 
Gen. Cancellaria Lmck. 
162. Cancellaria gracilis v. Ihering. 
PI. XXXVI, Fig. 3°T 
1897 C- g- v. Ihering, in: Rev. Mus. Paul., v. 2, p. 310, pi. 3, f. 11. 
1899 C. g. var. major v. Ihering, in: N. Jahrb. Miner., etc., v. 2, p. 35, 
pi. 2, f. 10. 
Shell ovato-fusiform, elongate, not umbilicated. Whorls 4^ to 8. 
Spire acuminate. Whorls convex, near the suture, in the upper part, 
indistinctly angulated, suture deep. Surface with 10 or 11 longitudinal 
ribs, crossed by spiral cords. Mouth oval. Outer lip crenulated within. 
Columella with two subequal plaits. Canal short, slightly curved. 
Height, 12 mm; diameter, 6 mm. 
Remarks : Our complete specimen is a little smaller than the original 
one described by v. Ihering in 1897, but agrees with it completely, 
with the exception that it has only 4^ whorls (5% in v. Ihering’s 
specimen). 
But it seems that this species attains a very much larger size ; the 
individual described by v. Ihering- in 1899 as var. major has 8 whorls, and 
is. 43 mm high, but otherwise it much resembles this species, with the excep- 
tion that there are 4-5 smaller plaits on the columella in addition to the two 
larger ones ; but this may be due to age. 
This species is very closely allied to the following, but differs in the 
more elongate form, less distinctly angulated whorls, and number of 
longitudinal ribs. 
Record of specimens : Mt. of Observation, upper horizon, 1 sp.; San 
Julian, Darwin Station, 1 cast. 
Distribution: Patagonian beds of Santa Cruz, and Suprapatagonian 
beds of La Cueva (v. Ih.). 
