14 



the shell. Australia and the Philippine Islands are the chief recorded 

 habitats.* 



1. acuminata, Ad. 



2. angulata, id. 



3. Arabica, id. 



4. articulata, id. 



5. asperulata, id. 



6. Baconi, id. 



7. bicarinata, id. 



8. bifurcata, id. 



9. calliostoma, id. 



10. cancellata, Krauss. 



11. Candida, Ad. 



12. concinna, Gould. 

 12. coccinea, Ad. 



14. Cumingii, id. 



15. decussata, id. 



16. duplicata, Sowb. 



17. fulgurans, ^rf. 



Species. 



18. haliotoidea, /Sb^. 



19. imbricata, Lam. 



20. Japonica, ^J. 



21. liueata, id. 



22. lintricula, «/. 



23. lirata, id. 



24. lutea, Linn. 



25. maculata, Zr?^. 



26. Malukana, Ad. 



27. margaritana, zV. 



28. nionilifera, id. 



29. nebulosa, id. 



30. nigra, Q«oy. 



31. notata, Ad. 



32. orbiculata, «¥. 



33. ornata, id. 



34. pallida, Ad. 



35. papyracea, CA#». 



36. phymotis, Helblin. 



37. planulata, Zam. 



38. pluinbea, Adm. 



39. pulchella, id. 



40. rubra, £«/«.. 



41. sanguinea, Ad. 



42. speciosa, £<Z 



43. splendida, id. 



44. stria tula, id. 



45. strigosa, z'^. 



46. sulcifera, Lam. 



47. tigrina, ^/. 



48. tuberculata, id. 



49. varia, id. 



Figure. 



Stomatella (Stomatia) phymotis. PL 22. Fig. 125. Shell, showing 

 its imperforate ear-shape and pearly interior. 



Genus 3. NERITOPSIS, Sowerby. 



Animal ; unknown. 



Shell ; Nerite-shaped, toith the columella curiously broadly notched 

 near the middle, white ; operculum thin, horny. 



The animal of this genus is not as yet known; but naturalists are 

 pretty well agreed on the place it should occupy in the system. Formerly 

 it was regarded as a member of the Nerite family, but now it is pronounced 

 to be intermediate between Stomatella and Narica. The old Nerita 

 radula of Linnaeus is still the only recent species. The most striking 



* " In their habits these mollusks are littoral, living on coral reefs and among stones between 

 tide-marks ; the finest species prefer coral reefs exposed to the action of the waves. Some of 

 the genera, as Gena and Stomatia, have considerable locomotive powers and glide (especially 

 Gena) with some degree of celerity. The latter genus and Stomatia possess the faculty, common 

 to some other kinds of mollusca, of spontaneously detaching a considerable portion of the hind 

 part of the foot when disturbed or irritated." — A. Adams, in T/ies. Conch., part xv. p. 828. 



