MELVILL— MAEINE MOLLUSCA. 91 



Family PlanaxidsB. 



100. Planaxis Uueolatus, Gould. 

 Loc. Amlrantes : S. Joseph Atoll. 



United, with many other so-called species, by Tryon to the West Indian P. Uucaius, 

 Da Costa. 



Mr. E. A. Smith has identified an allied species from the Maldive Isles * as P. iuepUis, 

 Gould. 



101. Flanaxia pyramidalis (Gmel.). 

 Log. Chagos Archipelago : Salomon. Anglaise. 

 Probably a variety of the next. 



102. Planaxis sulcatus (Eorn). 

 Loc. Chagos Archipelago : Salomon. 



Var. savignyi, Desh. 



Loc. Chagos : Diego Garcia, Barachois Maurice. 



Amirantes : S. Joseph I. 

 Variable, but very widely diffused. 



Family Xenophoridae. 



103. JCenophora corrucjata, Heeve. 



Loc. Cargados Carajos : Station B 9, 30 fathoms. 



Amirantes : Stations E 2, 29 fathoms, E 10, 22-85 fathoms, E 16, 39 fathoms, 

 all rough coral or LUhothanmia bottom. 



101. Xenophora solarioides (Reeve). 



Loc. Amirantes : Station E 6, 28 fathoms, Polyzoa-rubble. 



Seychelles : Stations P 2, 31 fathoms, coral-rubble, P' 3, 39 fathoms, and P G, 

 44 fathoms, both hard sand. 



105. Xenophora (Tugurium) indica (Gmel.). 

 Log. Seychelles : Station F 3, 39 fathoms, hard sand. 

 One example, not adult. 



Family ModulidSB. 



106, Modiolus tectum (Gmel.). 

 Log. Amirantes : S. Joseph I. 

 In local plenty. 



* Gardiner, J. S., ' Fauna and Geogr. of Maldivo and Laooadive Archipelagoes, MoUusca,' by E. A. Smith, j). 615. 



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