CHICOREUS. SO 



M. PALMA-ROS^E, Lam. PI. 14, fig. 140. 



This may be taken as the type of a group of Indo-Pacitic 

 species, very closely related and yet readily distinguishable by 

 minor characters. They are solidly built, with elevated spire and 

 the spines are peculiarly frondosely branched. M. palma-rosse 

 may be recognized by the denticulated border of its inner or 

 columellar lip. In its brownish hue, with darker tint on the 

 raised revolving lines, and in its pink-tinted fronds it resembles 

 other related species. Two or three longitudinal ribs are formed 



between the varices. Length, 4 inches. 



Ind. 0. 

 M. MAURUS, Brod. PI. 14, figs. 138, 139, 142. 



This species is usually smaller in size than the last and has no 

 teeth on the columellar lip. The fronds also, have intermediate 

 smaller fronds. Length, 3 inches. 



Philippine to Marquesas Isles. 



The type is dark colored, purplish ; lighter colored specimens, 

 tinged with pink are called M. Sauliae, Sowb., (fig. 142) and a 

 somewhat depauperate, small specimen has been figured and de- 

 scribed by Reeve as M. affinis, (fig. 138). 



M. MTCROPHYLLUS, Lam. PI. 14, fig. 144. 



The fronds like in M. mauriis but more stunted in growth ; the 

 shell is narrow, with spire much longer than the canal ; the inner 

 lip has a denticulate margin, like M. palma-rosae ; there are three 

 ribs between the varices ; the color is light brown with dark 

 brown or purplish black on the revolving lines and fronds. 



Length, 3 inches. 



Ind. Ocean. 

 M. BANKSII, Sowb. PI. 14, fig. 141. 



Somewhat like M. microphyllus in form, but a thinner shell, the 

 fronds more developed, the revolving lines neither so close nor so 

 prominent, the ribs, three in number, merging into two as the 

 shell becomes older. 3't5 inches. 



Moluccas. 



M. TORREFACTUS, Sowb. PI. 14, figs. 143, 145; PI. 15, fig. 151. 



Like m/'cropJit/llus this has a short canal, but it is usually a 



much stouter species ; in fact the stoutest of the group. The 



fronds are as in Saulise ; the inner lip is not denticulate on its 



margin and there is only one large tuberculous rib between 



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