24 



BEOORbS OF THE AttSTllALtAN MtJSEtJM. 



The Museum collection includes eight examples, dredged in 1884, 

 off Ball's Head, Sydney Harbour; and two dredged in 1880 by a 

 Museum expedition in charge of Mr. (now Prof.) W. A. Haswell, at 

 Broughton Islands, north of Port Stephens, New South Wales, in 

 thirty-five fathoms. The latter are catalogued in the Annual 

 Report of the Australian Museum for 1881, p. 22, as "No. 109, 

 Cardium sp. ?" 



Southern examples appear to exceed those from New South Wales. 

 The individual from Sydney, figured herewith, being 1-95 mm. in 



Fig. 5b. 



height, 1 "6 ram. in length, and 105 mm in breadth of conjoined 

 valves. Since the description of C. delta does not touch on the 

 hinge, I would point out that the umbo of the left valve is slightly 

 cleft for the reception of the large, projecting, and upcurved car- 

 dinal tooth of the right valve. In this feature, the sinuous dorsal 

 margin and the clasping of the valves there is a strong resemblance 

 to Corbula. 



When instituting Cardilel/a,' Smith expressed no opinion on its 

 systematic position, but apparently treated it as one of the 

 Carditidie. Bernard^ has placed the genus in his new family 

 Condylocardiida;. 



PhILOBRYA TATEI, 71. sp. 



(Fig. 6). 



Valve subquadrate, rather inflated, thin. Colour uniform pale 

 brown. Epidermis abundant, dense, membranous, projecting far 

 beyond the margin of the valve, puckered into about seventeen 

 radiating bristly crests. Prodissoconch of moderate size, rather 

 flat, with thickened margin. Externally the valve has fine 

 radiating riblets, corresponding to the epidermal crests and ter- 

 minating in a small sharp point on the margin. Numerous low 

 broad bars run continuously from riblet to riblet, appearing in 

 each intercostal space like the rungs of a ladder. Within, the 



3 Smith— Proc. Zool. Soc, 1881, p. 42. 



< Bernard— Journ. de Conch., xliv., 1896 (1897), p. 170. 



