30 



Var. FLAMMULATA, Recluz. 



Yellowish grey, maculated sparsely with black, ribs about 24, 

 alternately smaller. Diam. 23 mill. 



Malay Archipelago. 



N. SCABRICOSTA, Lam. PL 6, figs. 5, & 



Shell with numerous, rather close rounded ribs, crossed by close 

 scabrous longitudinal strire, dark greyish or black, more or less 

 maculated or spotted with orange brown, occasionally irregularly 

 banded with the latter; lip black-margined, numerously toothed 

 within, with larger teeth at the extremities, columellar teeth very 

 strong and prominent, the area deeply plicate, with a perpendicular 

 series of three tubercles below, sometimes confluent or obsolete. 



Diam. 30-50 mill. 



Panama, northward to Lower C ilijornta. 



The synonyms are N. ornata, Sowb. (fig. 5), X.fuscata, Menke, 

 N. Desliayesii, Recluz (fig. 66), and X. miiltijugis, Menke. I retain 

 Lamarck,'s name for this species although the identification is some- 

 what doubtful, Delessert figuring a N. costata for it; and I do this 

 because in the United States the species has been usually so designa- 

 ted. Dr. von Martens calls it JV. ornata, Sovverby, a name published 

 about the name date. The scabrous surface and compressed rounded 

 form well distinguish the sj>ecies. 



Section ODONTOSTOMA, (Klein. 1753), Morch. 18o2. 



N. POLITA, Linn. PI. 6, figs. 7-11; PL 7, figs. 12-23. 



Shell thick, smooth, polished, sometimes with faintly ru_ 

 growth-lines or very obscure spiral riblets, greyish., flecked or 

 spotted or banded with white, yellow, orange, red or black, the 

 ground color itself varying rather unusually to one of the other 

 colors, with or without flecks and bands; aperture porcellarious, 

 polished, thick, outer lip smooth or obscurely dentate witliin, colu- 

 mellar lip feebly dentate, the area smooth. Diani. 25-40 mill. 



Red Sea, Indian Oeean, Philippines, Pnti/nwia, Mauritius. 



The immense variation of coloring in this beautiful species has 

 been the cause of a considerable duplication of specific names. I 

 give examples showing the usual as well as some of the rarer 

 patterns of ornamentation. The synonymy includes X. niara, X. 

 flaveseens, and X. hieroglyphica, Chemn., X. biden* and JV. bir'<i*rit<t, 

 Gmel., X. Orbignyana, Recluz (figs. 19, 20). 



