349 



grown ; in 40 fathoms off Beachport, one alive, immature, 

 and 152 valves, the largest being 22 mm. antero-posteriorly 

 and 19'5 mm. umbo-ventrally; in 45 fathoms east of Nep- 

 tunes, four valves; in 49 fathoms off Beachport, nine valves, 

 half grown; in 62 fathoms north-west of Cape Borda, two 

 valves; in 90 fathoms off Cape Jaffa, five alive up to 10 mm. 

 in length, and 104 valves up to 12 mm.; in 100 fathoms off 

 Beachport, one alive, immature, and 140 valves up to 13 mm. 

 in length; in 130 fathoms off Cape Jaffa, very many valves; 

 in 150 fathoms off Beachport, 107 valves; in 200 fathoms off 

 Beachport, lifty-two valves up to 10 mm. in length. Its 

 range in depth is considerable, up to 100 fathoms in life, and 

 up to 200 fathoms as valves in quantity. 



The smaller individuals appear to be comparatively 

 longer; thus the measurements are 9*75 antero-posteriorly, 

 8'25 umbo-ventrally, 5'50 sectionally; then 12"5, 11'25, 8*25, 

 and 17"5, 17-5. 



This shell has been previously recorded for South Aus- 

 tralia by Prof. Tate in Trans. Roy. Soc. S. Austr., 1888, vol. 

 xi., p. 68, as C. heddomei, E. A. Smith, Chall. Rep. Zoo!., 

 1885, vol. xiii., p. 211, pi. xv., f. 5. But our shell is iden- 

 tical with shells from Tasmania and Victoria sent as C. 

 amahilis, Desh., and I cannot recognize any specific distinc- 

 tion between our species and the description and figure of 

 Deshayes, or between those of Deshayes and Smith. I think 

 V. heddomei will prove to be a synonym of V . amahilis. 



Cardita gemmidifera, Tate, Trans. Roy. Soc. S. Austr., 

 1892, vol. XV., p. 130, pi. i., fig. 9, is only a mild variant of 

 the above, and cannot be granted specific position. 



Venericardia quoyi, Deshayes. 



Cardita quoyi, Deshayes; Proc. Zool. Soc. Lond., 1852, p. 

 103, no plate: Hah. — "New Holland"; Tate and May, Proc. 

 Liun. Soc, New South Wales, 1901, part 3, p. 434, "Badger 

 Island," Tasmania; Pritchard and Gatliff. Proc. Rov. Soc, Vict., 

 1904, vol. xviii. (N.S.), part 1, p. 232,,, "Flinders, Western Port," 

 Victoria. 



('ardifa rosuienta, Tate; Trans. Roy. Soc, S. Austr., 1887, 

 vol. ix., p. 69, pi. v., f. 3, "Encounter Bay and Backstairs Pas- 

 sage." 



Dredged alive in Eastern Cove, Kangaroo Island, one 

 specimen in 11, in 14, and in 19 fathoms; also in Backstairs 

 Passage, two in 13 fathoms, two in 16 to 18 fathoms, three 

 in 20 fathoms, and one in 22 fathoms. Valves only were 

 taken in good condition in 25 fathoms off Beachport, two, 

 and in 40 fathoms, twenty-four valves; in 55 and 60 fathoms 

 off Cape Borda, eighteen; in 110 fathoms off Beachport, six; 

 in fair condition in 130 fathoms off Cape Jaffa, six : in 150 

 fathoms off Beachport, one ; and in 200 fathoms, two. 



