504 FUNAFUTI ATOLL. 



Specimens of this species are contained in this Museum from 

 New Caledonia and Uea or Wallis Island. It is represented by 

 the above quoted illustration, and is also identical with specimens 

 returned from the British Museum under the name of " Cardium 

 philippinense, Deshayes"; this name I have been unable to trace 

 in literature. 



CARDIUM MACULOSUM, Wood. 

 Reeve, loc. cit., pi. xvi., sp. 76. 



A few separate valves were found on the lagoon beach. 



CARDIUM CARDISSA, var. DION^UM, Sowerby. 

 Reeve, loc. cit., pi. xxi., sp. 122. 

 Common on the lagoon beach. 

 This was first collected by Cuming on Anaa, Paumotus. 



CARDIUM FRAGRUM, Linne. 

 Reeve, loc. cit., pi. iv., sp. 23. 

 Common in the lagoon. 



It is represented in this Museum from Port Curtis, Queensland, 

 and New Caledonia. 



C. FRAGRUM, var. SUEZIENSE, Issel. 



Smith, Chall. Rep., Zool., xiii., 1885, p. 158, pi. viii., figs. 2, 2a, 26. 



Separate valves were abundant on the lagoon beach, and one 

 was obtained outside the atoll at a depth of eighty to forty 

 fathoms. 



The four dozen odd valves before me exhibit much variation in 

 contour, and they appear to pass by gradual transition into typical 

 C. fragrum. Smith, who redescribes and refigures the species, 

 rests his definition chiefly on form. The figure of Issel,* which 

 he condemns, can in outline be exactly matched by Funafuti 

 material. Possibly the species tends in deeper water to assume 

 this form. The "Challenger " dredged it off Fiji, and this Museum 

 possesses examples from Torres Straits. 



TRIDACNA GIGAS, Z., var. SQUAMOSA, Lamarck. 

 Reeve, Conch. Icon., xiv., Tridacna, 1862, pi. iii. 



Not uncommon among the reefs of the lagoon. 



Known to the natives of Funafuti as "Fasua tuka," (ante p. 67) 

 and by them, as by other South Sea Islanders, esteemed for food.f 

 [t had a further economic value as material for ornaments and 



* Issel Malacologia del Mar Eosso, 1869, pi. iii., fig. 4. 

 t Hedley in Thomson British New Guinea, 1892, p. 283. 



