Bd. III: 7) 
ANTARCTIC FOSSIL BRACHIOPODA. 
39 
Fig. 4. Terebratula sp. B (p. 28). 
Dorsal view of a young shell, too narrow to be the young of T. vitreoides, as the 
growth lines of fig. 3 show a much broader shell at this size. From the Glauconitic Bank 
of Cockburn Island. 
Figs 5 — 7. Pachymagas antarcticus sp. n. (p. 21). 
Fig. 5«. Dorsal view; Fig. 5 />. Marginal view; Fig. 5 c. Anterior view, of the type 
specimen which is from the Glauconitic Bank of Cockburn Island. 
These drawings are very considerable restorations; the original specimen is much 
crushed and distorted, and does not show the details of the beak-area and foramen di- 
stinctly. The foramen is perhaps larger than is shown in the drawing. 
Fig. 6 a. View of ventral valve of another example; Fig. 6 b. Anterior view of 
same valve; these views are not restored. The specimen is from the same stratum and 
locality. 
Fig. 7. View of ventral valve of another example which is considerably imperfect, 
and has no dorsal valve attached; the drawing is not restored. The specimen is from the 
same stratum and locality. 
Explanation of Plate III. 
Fig. I. Terebratula lecta Guppy (p. 27). 
Fig. I a. View of dorsal valve of a very young example, which has lost the beak 
(magnified twice); Fig. i b. The same magnified 6 times showing the beautifully punctate 
test. Photographs by Mr. C. J. Bayzand. From the Glauconitic Bank, Cockburn Island. 
For other figs see PI. II, figs i, 2. 
Fig. 2. Bouchardia angusta sp. n. (p. 16). 
Fig. 2 a. Interior of dorsal valve, showing the posterior thickening, the large solid 
hinge plate with the V-shaped diverging grooved ridges, the median septum and cardinal 
process. Rather more than natural size (X 1.33). Photograph by Miss Buckman. Fig. 
2 b. The same more highly magnified (x 3.73). Photograph by Mr. C. J. Bayzand. 
From Seymour Island, younger beds. For other specimens of this species see PI. I, 
fig. 4. 
Fig. 3. Magasella australis sp. n. (p. 19). 
Fig. 3 a. Dorsal view of a very young specimen magnified (X about 8.5); Fig. 3/'. 
Side view (section) of a smaller broken specimen magnified (x about 16) showing the 
septum projecting from the anterior part of the dorsal valve. From the Pecten Conglo- 
merate of Cockburn Island. Drawings by Mr. C. J. Bayzand. For other figs see Plate 
I, figs t4 — 16. 
