Additions to Catalogue of Shells. 29* 



which it may be distinguished by its sharp, erect, concentric lamellae. 

 We are indebted for the kindness of Mr. F. Chapman. He photo- 

 graphed the identified shell figured on Plate III. 



Spisula trigonklla, Lamarck. 



1818. Mactra trigonella, Lamarck, An. s. Vert., vol. v., p. 



479. 

 1853. Gnathodon parvum. Petit. Jour, de Conch., vol. iv., 



p. 358, pi. 13, fig. 9, 10. 

 1903. Spisula parva, Petit. Pritchard and Gatliff, P.R.S. 



Vic, vol. xvi. (New Series), jd. 108. 

 1914. Mactra (Spisula), parva. Petit. Smith, P. Mai. Soc. 



Lond., vol. xi., p. 146. 



1914. Mactra, trigonella, Lamarck. Lamy, Bull, Mus. Nat. 



Hist., p. 245. 



1915. Spisula (Hemimactra), parva, Petit. Chapman, Geol. 



Surv. S. Aust., Bull, No. 4, p. 50. 



1916. Mactra trigonella, Lamarck. Hedley, J.R.S., W. 



Aust. vol. i., for 1915, p. 20. 



1917. Spisula trigonella, Lamarck. Hedley, P.L.S. N.S.W... 



vol. xli., 1916, p. 692. 

 1917. Spisula trigonella Lamarck. Chapman and Gabriel, 

 P.R.S. Vic, vol. xl. p. antea. 

 Hab. — Coast generally. 



Obs. — Spisula parva is reduced to synonymy through the dis- 

 covery of an earlier Lamarckian appellation. Dr. Lamy declares 

 their specific identity. 



Lasaea australis, Lamarck. 



1818. Cyclas australis, Lamarck. Anim. s. vert., vol. v., p. 



560. 

 1842-1856. Cyclas australis, Lamarck. Hanley, Cat. Recent 



Biv. Shells, p. 90. 



1913. Cyclas australis, Lamarck. Laniy, Bulletin du Mus.. 



d'Hist. nat. Paris, p. 466. 



1914. Lasaea scalaris, Philippi. Gatliff and Gabriel. V.N. 



vol. xxxi., p. 84. 



1915. Lasaea australis, Lamarck. Hedley, P.L.S. N.S.W.,. 



vol. xxxix., p. 702. 



1916. Lasaea australis, Lamarck. Hedley, Jour. Roy. Soc 



Western iVustralia, vol. i. for 1915, p. 13. 

 Hab. — Coast generally. 



