CHRYSAME. 147 



Closely allied to the preceding species. M. crassicostata , 

 Sowb. (fig. 254), is evidently the same. 



M. AURANTIA, Gmelin. PI. 43, figs. 255-258. 



Orange to chestnut or light chocolate color, upper part of 

 whorl encircled by a white band. Length, 1-1*5 inches. 



Mauritius, Philippines, New Zealand, Polynesia. 



M. nanus, Reeve (fig. 257), is a small variety or stunted 

 growth, with the revolving ribs usually finer. M. Michelinii, 

 Guerin (fig. 258), is a probable synonym; Sowerby's figure of it 

 is, however, a M. limbifera. 



M. PROSCISSA, Reeve. PI. 43, figs. 259-262. 



Whitish or yellowish, longitudinally stained with orange- 

 brown, sometimes obscurely white-banded in the middle ; inter- 

 stices of the revolving ribs cancellate. 



Length, 1'25-1'5 inches. Mauritius, New Caledonia. 



M. rubiginea, A. Ad. (fig. 260), M. carinilirata, Souv. (fig. 

 261), and probably M. consolidata, Sowb. (fig. 262), are syno- 

 nyms the latter is described from a single specimen, without 

 locality. 



M. ORASSA, Swainsoii. PL 43, figs. 263-265 ; PL 44, figs. 270, 272. 



Chestnut or chocolate color, usually white-banded above ; 

 whorls faintly striate throughout, striae developing into ribs 

 towards the base. Length, '8-1-25 inches. 



Philippines, on reefs, at low water, Polynesia. 



It is easy to connect M. Ticaonica, Reeve (figs. 264, 265,270), 

 with this species, and I fear that it is allied too closely with 

 aurantia, as well as with other species of the group. Material 

 collected especially to show the extent of variation of a species 

 rarely comes into the hands of the conchologist, the collector 

 usually working with the desire to secure as many species as 

 possible. M.jcoeligena, Reeve (fig. 272), is probably a synonym 

 of crassa, the only difference being the possession of occasional 

 white spots, promiscuously scattered over the surface. 



M. AMBIGUA, Swainson. PL 43, figs. 266, 267, 268. 



Orange-brown, indistinctly white-banded above ; the incised 

 .revolving lines are punctate. Length, l'5-2'5 inches. 



Philippines, Viti Isles ; under coral and stones, at low water. 



