492 FUNAFUTI ATOLL. 



ARCA TENELLA, Reeve. 

 Reeve, loc. cit., pi. xiv., sp. 91. 



One living and one dead specimen were taken in the lagoon. 



SEPTIPEB EXCISUS, Wiegmann. 

 Reeve, Conch. Icon., x., 1857, Mytilus, pi. iv., sp. 13. 



Separate valves were common on the lagoon beach. I once 

 found it alive in a block of perforated dead coral. This species 

 does not seem to have been reported from the Pacific. 



MODIOLA AUSTRALIS, Gray. 

 Reeve, loc. cit., Modiola, pi. v., sp. 21. 



Attached to coral blocks in the lagoon. 



The species I thus identify has a wide range. It occurs along 

 the Australian coast south to Sydney. Museum examples show 

 it from the Gilberts, Lifu, and New Caledonia. 



LlTHOPHAGA TERES, Philippi. 



Reeve, loc. cit., Lithodomus, pi. iii., sp. 13. 



Abundant ; boring coral with the following species. 



Schmeltz records it from Rarotonga, and Smith from Bowen, 

 Queensland. It is in this Museum from Port Molle and Port 

 Curtis, Queensland ; and New Caledonia. 



LITHOPHAGA LEVIGATA, Quoy & Gaimard. 



Quoy and Gaimard, Voy. "Astrolabe," Zool. iii., 1835, p. 464, pi. 

 Ixxviii., figs. 17, 18. 



Abundant at low water level, boring in coral blocks in the 

 lagoon. 



This species has been omitted from the Monographs of Reeve and 

 Dunker, and indeed from subsequent literature generally. From 

 the account quoted above, I have little doubt that it is the species 

 commonly known as Lithodomus malaccanus, Reeve. It is a 

 usual companion of the previous species. Under Reeve's name, 

 Schmeltz quotes it from Tahiti, and Smith from Torres Straits. 

 It is in this Museum from New Caledonia, and Tupuselei, British 

 New Guinea. 



PLICATULA IMBRICATA, Menke. 

 Sowerby, Thesaurus Conch., i., 1847, p. 437, pi. xc., fig. 6, pi. 



xci., figs. 15-18. 



A few small specimens found alive in shallow water in the 

 lagoon, adhering to dead shells, are with doubt so identified. 



