DOLIUM. 261 



Genus DOLIUM, Lam., 1801. 

 D. GALEA, Linn. PI. 1, fig. 3. 



Thin, narrowly umbilicated, spire short, with sunken sutures ; 

 whorls seven, spirally ribbed, the ribs flatty convex, close-set, 

 often with an intervening ridge on the upper portion of the 

 whorls; columella somewhat twisted; pale fulvous, inner margin 

 of lip stained with chocolate-brown, upper part of columella and 

 the apex of the spire often chocolate also. Length, 8-9 inches. 

 Mediterranean Sea, Beaufort, N. (7., to West Indies, Brazil. 



D. tenue, Menke, is the juvenile shell ; it is also Buccinum 

 olearium, Linn, (not D. olearium, Brug.). Morch has described 

 another juvenile as D. Antillarum. Gregorio has recently 

 described three varieties (spirintrorsum, terdina and epidermata) 

 from the vicinity of Palermo. 



D. MELANOSTOMA, Jay. PL 1, figs. 4, 5. 



Ribs about half the number of those of D. galea, and much 

 broader, with narrow intervening smaller ridges and grooves; 

 fulvous white, columellar callus and a broad interior margin of 

 the outer lip both stained dark chocolate-brown. Length, 9 inches. 

 Elizabeth Reef, So. Pacific 0. (Brazier); 



Friendly Islands (Jay) ; Hawaiian Islands (Pease). 



The shell which Reeve (fig. 5) has figured for this species 

 appears to be more nearly allied to the preceding, but possibly 

 the ribs are variable in number according to the size of the shell. 

 Pease saw a specimen 35 inches in circumference, and says that 

 those measuring 24 inches are usual. As Brazier refers to 

 Reeve's figure it is very likely that he has mistaken the species ; 

 as has also Kiister, who copies the figure in Reeve. The true 

 melanostoma may = the succeeding species, and if so, has priority 

 of publication. 



D. LUTEOSTOMA, Kuster. PI. 1 , fig. 6 ; PL 2, fig. 7. 



Body-whorl with fifteen to eighteen revolving, wide ribs and 

 narrow interstices, the latter bearing small ribs, paired on the 

 upper part of the whorl ; yellowish brown, variegated with 

 chestnut maculations ; interior of aperture deep yellowish brown. 



Length, 7-8 inches. 



Japan. 



The description is made from D. Japonicum, Dunker (fig. 7), 



