26 
(Schwed. Südpolar-Exp. 
S. S. BUCKMAN, 
youthful growth lines of the Antarctic specimens indicate a form as broad or broader 
than long. 
The punctæ in this species are illustrated in PI. Ill, fig. 7 b enlarged twice. 
They are similar to those of T. sp. A shown in PI. Ill fig. 10, but about half as 
numerous. Each preforation shows under the microscope a kind of raised rim. 
Locality: Cockburn Island (13), off Graham Land, Antarctica. 
Formation: Glauconitic Bank. 
Material: Two imperfect specimens, both rather crushed. 
Other localities: ‘In the coarse limestones forming the low sea-clift* on the south 
side of the jetty at Edithburgh, Yorke’s Peninsula (one example)’ — (Tate). In- 
ferior Beds No. 2 = Muloowurtie Clays (Tate, 1880, p. 170). 
Terebratula sp. A. 
Plate III, figs 9, 10. 
Remarks: There is one fragment of the umbonal portion of a dorsal valve 
showing the cardinal process, the hinge area, the bases of a loop and very rudi- 
mentary septum (PI. Ill, fig. 9). The test is coarsely punctate as in PI. Ill, fig. 10, 
and has somewhat coarse growth halts. There is another fragment partially embed- 
ded in matrix, the anterior part of, presumably, a dorsal valve with a slight anterior 
fold, possessing similar characters of test, only the growth halts appear rather more 
distinct and numerous. The character of the test of this fragment is illustrated by 
an enlarged photograph (PI. Ill, fig. 10). Whether these two fragments represent 
one or two species it is impossible to say with this material. They belong to the 
coarsely-punctate series of Terebratula and are certainly distinct from the other 
species described. 
The punctæ, or perforations of the test are twice as numerous as in T. bulbosa 
and T. trinitatensis: each perforation shows under the microscope a raised rim. 
Locality: Cockburn Island (13), off Graham Land, Antarctica. 
Formation: Glauconitic Bank. 
Material: Two fragments. 
The finely punctate series. 
The character of the finely punctate test is shown in Plate III fig. i b magnified 
4 times; and that of the radially sulcate test in PI. II fig. i d magnified about 7 
times: the punctae are in a layer under these sulci. 
These species with their thin test have much the appearance of species of 
Liothyrina ; but it has not seemed desirable to place them in that genus, of which 
the characters and limits are none too fully known. 
