167 



necessitated by the knowledge of the prior occupation of the 

 cognomen lucida by a recent shell described by Gould in 

 I860.* 



The identity of R. coelata with R. squamosa, Hutton, rests 

 upon the characters given to it by Mr. Woods, and upon the 

 observations of Mr. Davidson published therewith (op. cit. p. 77). 



"Rounded trigonal, with a strong mesial fold, with many 

 fine imbricating ribs." — T. Woods. 



" A most beautiful species, very closely related to R. 

 nigricans, from New Zealand. Some examples ill external 

 shape cannot be distinguished, but I have not observed on any 

 recent R. nigricans such prominent and strongly marked 

 imbricated stripe. The fold and sinus seem more strongly 

 marked on the fossil form. The ribs also seem smaller or more 

 delicate than on real nigricans.'''' — T. Davidson. 



It will be observed that Mr. Davidson uses the same 

 characters to distinguish the fossil from the recent R. nigricans 

 as Prof. Hutton had previously employed in founding the 

 species R. squamosa. 



Locality and Horizon. — In the glauconitic limestone, north of 

 Blanche Point, Aldinga Cliffs {Tate) ; yellow clays of Muloo- 

 wurtie (Tepper), and at Stansbury (Tate), Yorke's Peninsula; 

 on the R. Bremer, at Salem, near Callington (Tate). 



Muddy Creek, Hamilton (Tate), and from several Miocene 

 beds in Victoria (3fcCog) ; Table Cape, Tasmania (T. Woods) ; 

 Oamaru Formation (Eocene) Broken River, New Zealand 

 (Hutton) . 



Explanation op Plates. 

 Plate VII. 



Pig. 1. Waldheimia pectoralis, natural sizes. Aldinga. a and o, 



two views of an adult shell ; c and d, id of a young shell. 

 Pig. 2a-b. Waldheimia furcata, natural size. Aldinga. 

 Pig. 3. Waldhemia suffiata, natural size. Surveyor's Point. 

 Pig. 4. Terebratulina lenticularis, much enlarged. Aldinga. 



a, brachial valve ; h, lateral view of both valves ; c, front 



view. 

 Pig. 5. Terebratida bulbosa, a-b, two views, natural size. 



Edithburgh. 

 Pig. 6. Waldheimia Tateana, a-b, two views of the same 



specimen, natural size. Aldinga. 



* This species is described as " sub-circular— under the lens radiately 

 striated," and has no analogy with our fossil. 



