146 CHRYSAME. 



M. TURBEN, Reeve. PL 42, fig. 242. 



Closely and finely longitudinally ribbed, crossed by revolving 

 impressed striae. Orange-yellow. Height, *t5 inch. 



Philippine Islands. 



All the specimens collected by Mr. Guming had the lower part 

 of the outer lip absorbed or worn away, as in the figure. 



M. TABANULA, Lam. PI. 42, figs. 243-247. 



Reddish chestnut to chocolate-color ; whorls encircled by ele- 

 vated keel-like ridges, varying in number, so that sometimes the 

 interstices are as wide as the ridges, on other specimens merely 

 narrow deeply engraved lines. Length, '5-* 6 6 inch. 



Andaman Isles ; Philippines ; Polynesia. 



I unite with this species several others, the types of which 

 show some differences, but the series of specimens before me 

 clearly indicates their indentity. Fig. 243 is the typical taba- 

 nula: to which I add M. pediculus, Lam. (fig. 244) ; M. minor, 

 Sowb. (fig. 245), and M. rotundilirata, Reeve (fig. 246). M. 

 Caledonica, Petit (fig. 24f ), can scarcely be distinguished from 

 the short form of tabanula, such as M. pediculus, Lam. 



M. HANLEYI, Sowb. PL 43, fig. 248. 



Yellowish white, Length, '5-*t inch. 



China Seas. 

 M. SOLANDRI, Reeve. PL 43, figs. 249-251. 



Light chestnut to chocolate. Length, 1-1 -3 inches. 



Red Sea. 



Reeve's original specimen was probably worn and faded. The 

 relative width of ridges and grooves appears to vary as in M. 

 tabanula ; in the type (fig. 249), the former are narrower than 

 the latter, whilst in Mr. Sowerby's specimen (fig. 250), they are 

 more nearly equal ; a dark shell of this stage is M. Ruppellii, 

 Reeve (fig. 251) ; finally well-grown specimens have broad, some- 

 what flattened ribs = M. planilirata, Reeve. 



M. VEXILLUM, Reeve. PL 43, figs. 253, 254. 



Bright reddish orange, the incised lines which separate the 

 rounded, slightly raised revolving ribs, are darker -sometimes 

 chestnut-colored. Sometimes the ribs are obsolete, when the 

 grooves are scarcely marked, except by the persistent color. 



Length, 1-1-2 inches. Philippines. 



