278 STUDIES ON AUSTRALIAN MOLLUSCA, xi., 



tralia. Specimens are not extant in either the Washington or 

 Albany Museums, but, in London, I had the good fortune to find a 

 single faded specimen labelled "Sydney," which Mr. E. A. Smith 

 regarded as authentic, perhaps sent by Gould to Cuming, and 

 which is here illustrated. At South Kensington there is also a 

 series of C. jucundus from Nui or Savage Island; these are 

 brightly coloured, and differ slightly from the cotype by fewer 

 spirals. I conclude that C. jucundus is not a member of the Aus- 

 tralian fauna. 



Clanculus conspersus A. Adams. 

 (Plate xvii., fig. 46.) 



Clanculus conspersus A. Adams, Proc. Zool. Soc, 1851, (1853), 

 p. 163; Id,, An gas, Proc. Zool. Soc, 1865, p. 178; Id., Tenison- 

 Woocls, Proc. Roy. Soc. Tasm., 1877, p. 40; 1879, p. 69; Id., Prit- 

 chard and Gatliif, Proc. Roy. Soc. Vict., xiv., 1902, p. 119. 



There are, in the British Museum, two specimens, perhaps types 

 but not so marked, labelled "conspersus, A. Adams, M.C." There 

 is no other information. As the species has not been illustrated, 

 and has been ascribed to South Australia and Tasmania, a figure is 

 presented of one of these London shells. 



Alcyna exigua Gould. 



Elenchus exiguus Gould, Proc. Bost. Soc. Nat. Hist., viii., 1861, 

 p. 18. 



In the U. S. National Museum at Washington (July, 1912), I 

 saw the type of Elenchus exiguus, reported by its author from 

 Sydney. It is an Alcyna, and has, apparently, not been figured 

 under that or any other name. In the original register of the 

 Smithsonian Institute, it is recorded as C. 378 from "China Seas." 

 It can, therefore, be struck off the Australian list as an exotic. 



Thalotia tricingulata A. Adams. 



Thalotia tricingulata A. Adams, Proc. Zool. Soc, 1851 (1853), 

 p. 173; Id., Pilsbry, Man. Conch., xi., 1889, p. 153. 



This species has been traditionally reported from Queensland. 

 No authentic specimen, figure, or satisfactory description exists. 



