161 



Terebratella (?) pentagonalis, spec. nov. Plate ix., figs. 5a— 56, 



Shell small, obtusely pentagonal, longer than wide, broadest 

 about the middle. Valves moderately convex, flattened along 

 the middle ; surface marked with imbricating lamella; concen- 

 tric with the lines of growth. 



Beak large, rather produced, obtuse ; foramen large, oblong, 

 incomplete ; deltidial pieces small. Interior unknown, but the 

 shell is placed in the genus Terebratella, because of its incom- 

 plete foramen, and general resemblance to T. rubicunda and its 

 allies. 



Dimensions. — Length, "65 ; breadth, '5 ; thickness, 35 of an 

 inch. 



Locality and Horizon. — Grlauconitic limestone, north side of 

 Blanche Point, Aldinga Bay. Two examples. 



Terebratella furculifera, spec. nov. Plate xi., figs, la— 7c. 



Shell orbicular-oval, a little longer than wide ; side and 

 front margins in one plane. Valves moderately convex, the 

 peduncular valve a little the deeper, obtusely carinated in the 

 rostral half. Surface smooth, with a few concentric lines of 

 growth ; conspicuously punctate under a lens. 



Beak small, erect, depressed with strong ridges ; truncated 

 -by a small triangular foramen ; deltidial pieces rather large, dis- 

 united. 



Septum less than half the length of the valve. Loop doubly 

 attached, first to the diverging portions by transverse processes 

 from the end of the septum, and secondly by a forked process 

 which unites the abruptly truncated terminal bend of the loop 

 to the summit of the extremity of the septum. I have no less 

 than five specimens showing this peculiar conformation of the 

 oop. 



Dimensions. — Length, "65 ; breadth, - 55 ; depth, "3 of an inch. 



Observations. — Externally the species resembles Terebratula 

 Aldingae and Waldheimia insolita, but may be recognised by the 

 form of its incomplete foramen. 



Locality and Horizon. — In the glauconitic limestones, Blanche, 

 Point, Aldinga Bay. Six examples. 



Terebratella (?) Woodsii, spec. nov. PL ix., figs. 10a — 10c. 



Bef. — Waldheimia Corioensis, Trans. Boyal Society, N.S.W. ; 

 p. 79, fig. 3a— 3c, 1878. 



The Rev. Mr. Woods referred a small shell with a deep 

 depression on the smaller valve from Table Cape to W. 

 Corioensis, McCoy. But until young shells of that species are 

 known, it would be well to regard the identification as bad. 

 The only palliobranch from our Tertiaries, which possess a 

 mesial depression and somewhat similar shape to it is the young 



