NERITA. 



379 



marine, and they are principally inhabitants of warm 

 and tropical countries; they are littoral in their habits, 

 living on the rocks and stones, and are said to be 

 most active during the night, when they roam about, 

 feeding on the algae ; their eggs are ovate, covered with 

 a horny skin, and attached to other shells. 



SjJecies of Nerita. 



Aurora, Dkr. 

 australis, Gray. 

 Chemnitzii, Recluz. 

 clens-sanguineus, Chem. 

 Doreyaua, Quoij and Gaim. 

 fasciata, Meusch. 

 flava, Meusch. 

 flavescens, Chem. 

 Forskaalii, Recluz. 

 Georgina, Recluz. 

 Guamensis, Qaoy and Gaim. 

 liieroglypbica, Chem. 

 histrio, Linn. 



incerta, V. d. Busch. 

 insculpta, Recluz. 

 Kiset, Adanson. 

 liueata, Linn. 

 olivaria, Le Guillou. 

 Orbignyaua, Recluz. 

 Pacifica, Recluz. 

 Peruviana, Phil. 

 polita, Linn. 

 radiata, Recluz. 

 Rumphii, Recluz. 

 tenebrosa, Recluz. 

 Umlaasia, Krauss. 



Sub-gen. pila, Klein (Peloronta, Oken). 



Septiform plane of inner lip rugose ; outer lip internally 

 dentate. 



antiquata, Recluz. 

 aurantia, Recluz. 

 chrysostoma, Recluz. 

 corrosula, Recluz. 

 costata, Gmel. 

 costulata, F. d. Busch. 

 crassa, Gould. 

 Essingtoni, Recluz. 

 flammulata, Recluz. 



grossa, Linn. 

 Lagar, Adanson. 

 Le Guillouana, Recluz. 

 maculifera, Le Guillou. 

 maxima, Chem. 

 multijugis, Mke. 

 musiva, Gould. 

 Novse Guinese, Less. 

 Novse Hiberniae, Less. 



