MOLLUSCA.-HEDLEY. 



97 



ject at the margin. These are parted by broad and deeo 

 interstices, roughened with a grain surface, whereas the 

 summits of the ribs bristle with short, stout, close-set, divari- 

 cating, little spikes. Lunule reduced to a narrow crescent 

 under the umbo. Interior nacreous furrowed by the imprint 

 of the external sculpture. In both valves a single conical 

 tooth is set at the margin of the lunule. Length 6 '7, height 

 6, depth of single valve 2'3 mm. 



A couple of odd valves occurred in 100 fathoms forty miles 

 south of Cape Wiles, South Australia. Prof. W. A. Haswell 

 and I dredged a fragment in 80 fathoms twenty-two miles 

 east of Narrabeen, New South Wales. The strong ribs and. 

 prickly sculpture readily distinguish the species. 



V'erticordia setosa , Hediey. 

 Verticordia rhui)dioidea, Hediey, Trans. N.Z. Inst., xxxviii.,, 

 1905, p. 71, pi. ii., fig. 12, 13, 14; id., Rec. Austr. Mus., 

 vi., 1906, p. 215. [Not Verticordia rhomboidea, Tate, 

 Trans. Roy. Soc. S. Austr., ix., 1886 (1887), p. 149, pi. 

 xiv., f. 14.] 

 Verticordia setosa, Hediey, noni. niut. Rec. Austr. Mus., vi., 

 1907, p. 303. 

 A single valve from 100 fathoms, forty miles south of CapC' 

 WTles, South Australia, represents a species new to the 

 Adelaidean Region. I took the species first in no fathoms 

 off Great Barrier Island, New Zealand, and again in 250 and 

 in 800 fathoms off Sydney. In the South Australian example 

 the radial ribs are less prominent than in the New Zealand 

 shells. 



Vexericardia rosulenta, Tate. 

 (Plate xvii., fig. 4.) 

 Cardita rosulenta, Tate, Trans. Roy. Soc. S. Austr., ix.,. 

 1887, p. 69, pi. v., f. 3 

 The "Endeavour" took C. rosulenta ofif Devonport, Tas- 

 mania, and in 40 fathoms north of Cape Borda, South Aus- 

 tralia. A giant from the former locality is 45 mm. in length. 

 As the original figure is vague I offer an illustration of a 

 specimen 28 mm. long from St. Vincent's Gulf, for the iden- 

 tification and example of which I am indebted to Dr. J. C. 

 \'erco.i 



The nomenclature of this species is involved in difficulty. 

 After the publication of his name, Prof. Tate observed that 

 Tenison Woods had previously recognised2 his shell as C. 

 quoyi, Deshayes, and he thereupon withdrew his rosidenta m 



1 Verco— Trans. Roy. Soc. S. Austr., xxxii., 1908, p. 349. 



2 Tenison Woods— Proc. Roy. Soc. Tasm., 1877, p. 59. 



