38 
s. s. BüCKMAN, 
(Schwed. Südpolar-Exp. 
Fig. II. Hemithyris australis sp. n. (p. 12). 
Fig. lia. Dorsal view; Fig. 1 1 Marginal view; Fig. 11 c. Anterior view; ail of the 
only specimen which is from the Glauconitic Bank of Cockburn Island. 
Fig. 12. Hemithyris imbricata sp. n. (p. ii). 
View of ventral valve of the only example which is from the Glauconitic Bank of 
Gockburn Island. 
Fig. 13. Hemithyris squamosa HUTTON sp. (p. 10). 
Fig. 13«. View of dorsal valve to show raised fold; Fig. 13^. Anterior view with 
dorsal valve above; both of the sole example which is from the Glauconitic Bank of 
Cockburn Island. 
Figs 14 — 16. Magasella australis sp. n. (p. 19). 
Fig. 14 a. Dorsal view; Fig. 14 à. Marginal view; Fig. 14 c. Anterior view with dorsal 
valve uppermost; all enlarged twice natural size, and all of the type specimen which is 
from the Pecten Conglomerate of Cockburn Island. 
Fig. 15. Ventral view, enlarged twice, of a variety with prominent growth halts; it 
is from the same place and stratum. 
Fig. 16. View of another specimen — enlarged (X 4.3 times natural size) with part 
of ventral valve removed to show the loop (partly perserved) and the septum. From 
same stratum and locality. (Owing to exigencies of lighting to show the loop this specimen 
is depicted with beak downwards.) 
Fig. 17. Magasella antarctica sp. n. (p. 18). 
Fig. I y a. Dorsal view, showing septum; Fig. 17^. Ventral view, showing fold and 
plications; Fig. 17 ^r. Marginal view; Fig. ly if. Anterior view, dorsal valve below; all en- 
larged 1.3, and all of the type specimen which is from the Glauconitic Bank of Cockburn 
Island. 
Explanation of Plate II. 
Photographs and drawings by Mr. C. J. Bayzand. 
Fig. I, 2. Terebratula lecta Guppy (p. 27). 
Fig. I a. Dorsal view; Fig. i f>. Marginal view; Fig. i c. Anterior view; Fig. i if. Por- 
tion af test magnified (X 4.7 photograph) shewing the longitudinal grooves.^ From the 
Glauconitic Bank, Cockburn Island. 
Fig. 2. Dorsal view of a younger specimen from the same stratum and locality. The 
drawings are slightly restored. 
Fig. 3. Terebratula vitreoides Tate (? Woods) (p. 28). 
Fig. 3 a. Dorsal view; Fig. 3^. Marginal view, of a specimen from the Glauconitic 
Bank of Cockburn Island. The drawings are somewhat restored. 
' Owing to the method of lighting, this photograph has had to be placed so that the anterior end 
is upwards. 
