318 



L. 9919. Examples of the neanic stage of growth, showing 

 variation in regard to disposition of the radial costse ; from Aldinga. 



PurcJiased. 



L. 10533. Eight valve of the neanic stage of growth ; from 

 Willunga. H. T. L. Brown Coll. 



Pecten palmipes, Tate. 



1886. Pecten palmipes, Tate, Trans. Roy. Soc. South Aust. vol. viii. p. 105, 

 pi. V. iig. 4 ; pi. vii. figs. Aa-b. 



Readily distinguished by its wide, undulating, distant, radiating 

 costas, which are faintly longitudinally lineated, and become flatter 

 as they approach the margin ; and especially by the minutely 

 granular structure of the spaces between the costse, which also 

 bear a few obscure longitudinal lineations ; auriculae well developed. 



The author compares it with the living South Australian 

 P. hifrons, Lamarck, from which it differs by the obliquity of 

 its valves, and in being broader ; the interior is plicated, but not 

 costated as in P. lifroyis. 



Dimensions. — Height 40 mm. ; length 38 mm. 



Form, and Loc. — Tertiary : Willunga, South Australia. 



L. 10533. Right valve of the neanic stage of growth. 



H. Y. L. Broion Coll. 



Pecten eyrei, Tate. 



1886. Pecten eyrei, Tate, Trans. Eoy. Soc. South Aust. vol. viii. p. 107, 

 pi. viii. figs. 3a-S, 6. 



Ornamented by closely-set, rounded, radiating costse, bearing very 

 numerous erect scales decreasing in size and relative development 

 on being traced back from the margin until in the umbonal region 

 the ribs are, practically, simple. The auriculae are unequal, radially 

 ridged, and transversely lamellated. 



Pimensions. — Height 23 mm. ; length 21 mm. 



Form, and Loc. — Tertiary : South Australia. 



L. 10534. Eight valve ; from Willunga. B. Y. L. Brown Coll. 

 L. 10536, L. 10537. Specimens in limestone showing the 



