268 STUDIES ON AUSTRALIAN MOLLUSCA, xi., 



In the British Museum, the species I lately described as R. excel- 

 lens, from Queensland, is displayed as Lepton cumingii. 



Cyamiomactra balaustina Gould. 



Kellia balaustina Gould, Proc. Bost. Soc. Nat. Hist, viii., 1861, 

 p. 33. 



Cyamiomactra nitida Hedley, These Proceedings, xxxiii., 1908, 

 p. 477, PL ix., figs. 19, 20. 



This species was collected by W. Stimpson, in Sydney Harbour. 

 I was pleased to find the type, a single valve (Reg. No. 305) in the 

 U.S. National Museum, in July, 1912. I recognised, in it, my 

 Cyamiomactra nitida. Not to rely on memory, I later sent examples 

 of my species to Washington. Dr. Bartsch replies, 21/5/13, "Cya- 

 miomactra nitida Hedley is Lascea balaustina Gld., absolutely." 



Solecardia strangei Deshayes. 

 (Plate xvi., figs. 16, 17, 18, 19.) 

 Scintilla strangei Deshayes, Proc. Zool. Soc, 1855, (1856), p. 

 181; Id., Sowerby, Conch. Icon., xix., 1874, PL ii., fig. 13. 



As the previous illustration of this species is unsatisfactory, I 

 now present a drawing of the type-shell in the British Museum, 

 which is 16.5 long, and 19 mm. high. 



Cardium productum Deshayes. 

 (Plate xvi., figs. 20, 21, 22.) 

 Cardium productum, Deshayes, Proc. Zool. Soc, 1854, (1855), p. 

 333. 



This unfigured species was reported from Torres Straits. Subse- 

 quent writers have not dealt with it. The accompanying figure is 

 taken from a Cumingian specimen, probably the type, 15 mm. 

 long; 23 mm. high, and 20 mm. across the conjoined valves. I sug- 

 gest that C. productum is a synonym of Cardium diono3um 

 Sowerby. 



Dosinia tumida Gray. 

 Artemis tumida Gray, Analyst, viii., 1838, p. 309. 

 Even with the large series of the British Museum at my disposal, 

 I found difficulty in arriving at the proper titles of Australian 



