1872.] ETHEEIDGE QUEENSLAND EOSSILS. 341 



NucuLA QTJADEATA, Ether. PL XIX. fig. 5— PI. XX. fig. 3. 



Shell quadrate and tumid, umbones anterior, and anterior side short 

 and vertical ; posterior side much elongated and sharply rounded ; 

 teeth on posterior side large and numerous ; those on anterior side 

 few (seven or eight) and smaller ; posterior dorsal margin flat. 



Obs. Two specimens only occur in the collection ; but neither this 

 species nor iV^. gigantea shows the inner surface of the shell, and 

 therefore no crenulations are seen along the ventral margin ; the 

 muscular scars and pallial sinus are well defined in the cast. 



Loc. Maryborough. Form. Cretaceous. 



NuciTLA GIGANTEA, Ether. PI. XX. fig. 4, 



Shell ovately oblong ; dorsal margin nearly horizontal ; ventral 

 margin nearly semicircular ; umbones placed very anteriorly and 

 nearly straight ; hinge-teeth thirteen or fourteen, on posterior side, 

 and five or six on anterior side of umbo. No external shell occurs 

 on any of the Nuculce in the collection. 



Loc. Maryborough. Form. Cretaceous. 



One specimen only in the collection. 



Leda elongata, Ether. PI. XX. fig. 5. 



Shell elongated, length nearly double the height ; umbones nearly 

 central, nearer anterior than posterior margin ; teeth very numerous 

 on both sides of umbo — anterior twelve or thirteen, posterior 

 fifteen. ^ 



Ohs. This shell much resembles Leda scajpha, D'Orb., " Etage 

 aptien" of France and Gault of England, but is larger. Some 

 Yolclice from the Arrialoor group of the Indian Cretaceous rocks 

 outwardly resemble this species, especially Y. scaphuloidea, Stol. 

 It is, however, quite distinct. Figure magnified twice. 



Loc. Maryborough. Form. Cretaceous. 



Tellina maki^bukiensis, Ether. PI. XX. figs. 6, 6 a. 



Shell compressed, transversely elongated, nearly equilateral, 

 acutely rounded anteriorly ; posterior margin slightly truncated, 

 lines of growth strongly marked and band-like ; these concentric 

 bands are broad and of equal width ; shell- structure absent. 



Obs. In many respects this shell resembles Tellina (Palceomcera) 

 inconspicua, Forbes, from Trichinopoly ; but the band-like mark- 

 ings, if in the external shell, which they appear to be, remove 

 it from that species ; in form, size, and habit, however, it closely 

 approaches it. 



Loc. Maryborough. Form. Cretaceous. 



Tellina, sp. PL XX. fig. 7. 



I figure this form of Tellina as being a common shell in the 

 collection ; it is less elongated and more deltoid in form than 

 T. mariceburiensis, and apparently possessed a smooth shell instead 

 of the banded structure of that species ; the anterior side is obtusely 



