236 FOSSARID^:. 



Section COUTHOUYIA, A. Adams, 1860. 



Shell ovate, profoundly, widely rimate ; spire acuminated ; 

 whorls convex, decussated, with impressed suture ; aperture semi- 

 ovate ; inner lip straight, dilated in front, outer lip arcuate, simple. 



Japan. F. DECUSSATUS, A. Ad. 

 Section CONRABIA, A. Adams, 1860. 



Turbinate, rimately umbilicated, spire somewhat elate ; whorls 

 convex, concentrically carinated ; outer lip fimbriated, inner lip 

 not dentate ; umbilicus margined by a semilunar rib. F. CINGULI- 

 FERUS, A. Ad. 



Japan. 

 Section GOTTOINA, A. Adams, 1863. 



Shell spirally ribbed, solid, imperforate. F. SULCIFERUS, A. Ad. 



Japan. 

 Section TUBA, Lea, 1833. 



Shell conical, umbilicated ; whorls rounded, cancellated ; aper- 

 ture rounded, margin not continuous above, columella thickened 

 and reflected at the base. F. ALTERNATUS, Lea. Eocene. 



A labama. 



Subgenus FOSSARIOPSIS, Laube, 1870. 



Distinguished from Fossarus by its closed umbilicus, and the 

 callous expansion of the inner lip. F. RUGOSO-CARINATUS, Klipst. 

 Triassic. 



Subgenus RAULINIA, Mayer, 1864. 



Imperforate, rather thin, oval-oblong, spirally sulcate ; outer lip 

 simple, inner lip curved, with a central tooth. F. ALLIGATA, 

 Desh. Miocene. F. BADIA, Tenison-Woods, is a recent Australian 

 species. 



Subgenus IPHITUS, Jeffreys, 1883. 



Imperforate, conical, with spiral rows of tubercles, apex com- 

 posed of a styliform process of several whqrls, closely striated 

 lengthwise ; aperture rounded, entire, with simple lip. Operculum 

 corneous, paucispiral. I. TUBERCULATUS, Jeffreys. 



N. Atlantic 0. 



Genus FOSSARINA, Ad. & Ang., 1863. 



Auriform, a little depressed, narrowly umbilicated, spire short ; 

 aperture oval, oblique, lips rounded. Operculum multispiral. F. 

 PATULA, Ad. & Ang. 



Australia. 



