208 



Reeve. Conch. Ic. Vol. IX, Natica, fig. 71. 



Tryon. Man. of Conch. Vol. VIII, p. 45, PL 20, fig. 98. 



Stat. 19. Bay of Labuan Tring, West coast of Lombok. 18 — 27 M. River-mud, coral, coral- 

 sand. I Spec. 

 Stat. 80. Borneo-bank. From 40 — 50 M. Fine coralsand. i Spec. 

 Stat. 258. Tual, Kei-islands. 22 M. Lithothamnion, sand and coral. 2 Spec. 

 Stat. 313. East of Dangar Besar, Saleh-bay. Up to 36 M. Sand, coral and mud. i Spec. 



The specimens from Stat. 258 are the only ones which have been collected alive, with 

 the operculum., which is calcareous, as has been stated by v. Martens (Rumphius Gedenkboek, 

 Moll. p. 6). Menke (Syn. meth. Mollusc. Ed. alt. 1830, p. 47) has not described it, but locates 

 it in his Section B "Ventricoso-giobosae; operculo (in omnibus?) corneo". Tryon (I.e.) locates it 

 amongst the species with corneous operculum. As Menke has not described his species I have 

 applied Blainville's name, which has priority, though he gives no more description than Menke. 

 Perhaps the name hipinus of Deshayes (An. s. vert. Ed. II, Vol. VIII, p. 648) will be the 

 eldest name accompanied by a description. 



7. Natica ala papilionis Chemnitz, var. articulata Philippi. 



Philippi. Martini-Chemn. Conch. Cab. Ed. II, Vol. II, Natica, p. 119, PI. 17, fig. 4, 8. 



Stat. 240. Banda. 9 — 45 M. Black sand, coral, i Spec. 



Philippi has separated this form as a valid species. The Siboga-specimen exhibits all 

 the characters, but I think they are only varietal. Tryon (Man. of Conch. Vol. VIII, p. 21), 

 quotes it simply as a synonym. The specimen is about as small as Philippi's fig. 8, and possesses 

 the fine, sulcated operculum. 



8. Natica euzona Recluz. 



Recluz. Proc. Zool. Soc. Lend. 1843, P- 204. 



Philippi. Martini-Chemn. Conch. Cab. Ed. II, Vol. II, Natica, p. 147. 



Reeve. Conch. Ic. Vol. IX, Natica, fig. Qj c [picta pars). 



Tryon. Man. of Conch. Vol. VIII, p. 22 {picta pars). 



Stat. 47. Bay of Bima, near South fort. Shore, i Spec. 



Stat. 51. Molo-strait. 69 — 91 M. Fine, grey sand, coarse sand with shells and stones. 6 Spec. 



Stat. 60. Haingsisi, Samau-island. Reef, i Spec. 



Stat. 260. Nuhu Jaan, Kei-islands. 90 M. Sand, coral and shells. 2 Spec. 



Stat. 313. East of Dangar Besar, Saleh-bay. Up to 36 M. Sand, coral and mud. i Spec. 



Many authors have considered N. euzojia to be merely a variety or even a synonym of 

 N. picta RecliLZ; as the Siboga-specimens belong without exception to ejizona, I have applied 

 that name. Anatomy perhaps will produce distinguishing characters. 



9. Natica niarochiensis Gmelin. 



Gmelin. Syst. Nat. p. 3673. 



Reeve. Conch. Ic. Vol. IX, Natica, fig. 52. 



Tryon. Man. of Conch. Vol. VIII, p. 22, PI. 5, fig. 74, 75. 



