S85 



Order DIBRANCHIA. 



Family LUCINID^. 



Genus LUCINA, Bruguiere. 



[Ency. Meth. Vers. Coq., etc. t. ii. 1798, pi. cclxxxiv. ; Lamarck, Mem. Soc. 

 Hist. Nat. Paris, 1799, p. 84.] 



Shell suborbicular, or oval, slightly inequilateral, ornamented 

 by striiE or small concentric lamellae, sometimes crossed by radiating 

 ribs ; luaule well defined ; hinge very variable, but carrying 

 normally two cardinal and one or two lateral teeth on each valve ; 

 ligament marginal, long ; interior of the valves punctate ; pallial 

 line large, simple. 



Type. — Venus edentula, Linnseus. 



Lucina nuciformis, Tate. 



1886. Lucina nu-ciformis, Tate, Trans. Eoy. Soc. South Aust. vol. viii. 



p. 158, pi. xii. figs. lOfl-5. 



1887. Lucina nuciformis, Tate, id. vol. ix. p. 144. 



Shell globose, abruptly compressed in the post-dorsal area ; 

 surface ornamented by thick concentric lamellas and radial lines ; 

 margin strongly crenulated ; lunula small. It bears a superficial 

 resemblance to Z. {Linga) columbella, Lamarck, of the European 

 Miocene. 



Dimensions. — Height 8*5 mm. ; length 9 ram. 



Form, and Loc. — Miocene : Aldinga, South Australia. 



L. 9871. Several specimens of divers stages of growth. 



Purchased. 



Lucina, sp. 



42689. Cast of a large flattened species, possibly referable to 

 the subgenus Miltha; (locality?) South Australia. 



Presented hy the Governors of Adelaide Museum. 



L. 10435. Several casts of a large globose species ; from 

 AVillunga, South Australia. H. Y. L. Brown Coll. 



cc 



