156
MALCOLM R . CLARKE
fro. 24. Change in form during growth of Gondw,fabricii after Saaaki (1929. Plate 22; Figs. 17, 16 and 14). Naef (1923, Fig. 116) and
Steenatrup (1881-1882, Plate 1, Fig. 1). All from the d o r d aide. Mantle length i n o m are indicated.
MALCOLM R . CLARKE
fro. 24. Change in form during growth of Gondw,fabricii after Saaaki (1929. Plate 22; Figs. 17, 16 and 14). Naef (1923, Fig. 116) and
Steenatrup (1881-1882, Plate 1, Fig. 1). All from the d o r d aide. Mantle length i n o m are indicated.