212 



ceeds to compare the one with the other, designating the 

 Muddy Creek fossil as C exigua. But the Table Cape fossil 

 is neither C. exigua nor 0. aracJiis, and for it I propose the 

 name of G- Woodsii. 



Aeca trapezia. 



This living species, which is so abundantly fossilised in the 

 Pleistocene deposits on the coast of South Australia and on 

 the islands in Bass' Straits, is included by Mr. E. M. 

 Johnston in his list of Table Cape fossils (Proc. Eoy. Soc, 

 Tasmania, 1879, p. 41). 



Judging from Mr. Johnston's unpublished drawing of the 

 only specimen said to have been found in the Older Tertiary 

 deposits, I think there cannot be a doubt as to the correctness 

 of the identification, but grave suspicions attach to the 

 habitat, which cannot now be cleared up by an appeal to the 

 condition of the fossil, or to the nature of the matrix, as the 

 specimen has been lost. Mr. Johnston writes me : "I am in 

 doubt whether the specimen may not have been taken from 

 some of the fallen masses in which possibly an old worn 

 living shell had got mixed up. . . . We must consider 

 this shell doubtful for the present." 



CUCULL^A CONCAMERATA 



Is quoted by Tenison- Woods, loc. cit., 1875, p. 15, and by 

 Johnston, id., 1879, p. 31, as a Table Cape fossil, yet the 

 latter author, in a former paper, refers frequently to G. 

 Gor^ioensis, making no mention of G. concamerata. It is true 

 that McCoy, in his earlier reports, gives G. concamerata as a 

 fossil in the Older Tertiary of Victoria, but the name was 

 subsequently abandoned for G. Gorioensis, which is described 

 by him as a new species, closely related to the living one. 

 The two names have doubtlessly been used interchangeably 

 by the Tasmanian geologists, especially as Mr. Johnston 

 informs me that there is only one form at Table Cape. 



LiMOPSIS AURITA. 



This living species has been identified in the Victorian 

 tertiary deposits by McCoy ; but I very much question, if 

 the large, thick, and smooth shell, which is so characteristic 

 of the oldest of the Australian tertiary series at Adelaide 

 and Aldinga in South Australia and which can be traced up 

 from the smaller shells figured by McCoy, can find a compeer 

 among the European examples of L. aurita, either living or 

 fossil. For it Sowerby's name of L. insolita should be 

 used until conclusive evidence is adduced of the applicability 

 of Sacchi's name to our fossil, Sowerby described his L. 



