52 FUSING. 



A rare species, inhabiting deep waters. It is found fossil in 

 the miocene and pliocene of the adjacent countries. 



b. Tubercles compressed ; not ribbed. 

 F. FROBOsciDiFERUg, Lam. PI. 32, fig. 93. 



Yellowish brown, covered by a light brown epidermis. 



Length, 8 to 12 inches. 



Australia. 



This species is remarkable for its shelving shoulder, forming 

 a conical spire with flat sides, for the ridge at the angle of the 

 shoulder, which on the body whorl is only slightly or not at all 

 tuberculate, for the absence of longitudinal ribs, and for the sepa- 

 ration of the lip from the canal, forming a long, narrow, umbili- 

 cal channel. It is an aberrant form which I have been tempted 

 to place in Hemifustis, or to make it the type of a new genus. 

 Dr. Binney identified this species with Murex Aruanus, Linn., 

 which is exceedingly questionable, as that name is usually cited 

 for a very different shell belonging to the genus Ftilyur. It 

 appears to me to be more advisable to retain Lamarck's well- 

 known name. 



F. VENTRICOSUS, II. Adams.^ PL 32, fig. 94. 



Yellowish white. Length, 130 mill. 



D'Agulhas Bank, Cape of Good Hope. 



Evidently related to the preceding species and showing even 

 more clearly than it does the separation of the inner lip from 

 the columella. Kobelt has changed the name to Adarnvii, because 

 the original specific name is preoccupied by Beck and Gray, but 

 as I do not adopt either of these in the genus, I retain Adams' 

 designation. 



c. Tubercles compressed, shell ribbed longitudinally. 

 F. COLUS, Linn. PI. 32, figs. 89-92, 95. 



White, the upper whorls of the spire and a part of the canal 

 stained with brown ; periphery sometimes brown-banded between 

 the nodules. Length. 6 to 7 inches ; diameter 1 -5 inches. 



Ceylon, Tonga Tabou. 



Var. TOREUMA, Martyn (fig. 95), is distinguished from the 

 typical form only by being more highly colored. The shell is 

 yellowish brown, with chestnut-brown between the tubercles on 



