208 STUDIES ox AUSTRALIAN MOLLUSCA, VIII., 



visible protoconch. Colour uniform red or purple. Externally 

 smooth, coarse irregular concentric sculpture, no radii. Hinge- 

 plate broad, widening posteriorly, projecting into the valve. 

 Chondrophore oblique, long, curved, separating two overlapping 

 crenulated bands, one shorter, subumbonal, with fewer stronger 

 lines; the other longer, posterior, with more numerous but weaker 

 crenulations. No marginal teeth. Margin smooth, except on 

 the posterior side, where it is broken into five prominent, inter- 

 locking tubercles. Both posterior and anterior adductor scars 

 are visible; the pallial line is apparently simple. Height 3 -8; 

 length 2 9; diameter of single valve 1*2 mm. 



Hab. — Tasmania : Eagle Hawk Neck (type, in shell sand col- 

 lected by Mrs. C. Hedley, 27th May, 1903); Ulverston, among kelp 

 roots (Miss Lodder); Scamander River (Miss Lodder) — New 

 South Wales : Long Bay near Sydney, in shell sand (Miss L. 

 Parkes). 



Type. — To be presented to the Australian Museum. 



The nearest relation to the species above described is Myrina 

 crenatulifera, Tate."^ This was apparently shown by Tate to 

 Bernard, who did not recognise it as a Philobrya, but continued 

 itf in the original genus,; from which Tate afterwards transferred 

 it.§ My reference of that species as occurring in waters of this 

 State|| is based on P. rubra. The two species agree in the absence 

 both of the peculiar protoconch of Philobrya and of external 

 radiating sculpture. Tate's species is always brown, mine red; 

 and the mytiliform shape of the novelty further distinguishes it. 



The genus Philippiella was instituted by Dr. Georg Pfefferll 

 for the reception of two species from South Georgia. I have not 



* Trans. Koy. Soc. S.A. xv. 1892, p. 131, pi. i., figs. 11, 11a. 

 t Journ. de Conch, xlv. 1897, p. 37. 

 X Adula should replace the preoccupied Myrina. Vide Marshall, Journ. 

 of Malac. viii. 1901, p. 19. 



§ Trans. Roy. Soc. S.A. xxii. 1898, p. 87. 



II These Proceedings, xxvii. p. 17 ; Mem. Aust. Mus. iv. 1902, p. 30O. 



IF Jahrb. wiss. Hamburg, iii. 1886, p. 119. 



