On the Amphihious Vulutes. 45 



Only one specimen in Dr. Milligan's collection. 



U'he base of the upper lip projects, and the umbilicus is 

 closed, but margined externally by an elevated rim. The 

 lower plait is the thickest, and is divided almost into two by a 

 deep groove. 



2. it. lidentata. 

 Two-toothed Pinkmouth. 



Shell ovate ; body whorl ventricose ; outer lip with two 

 distinct but unequal teeth on the inner margin j basal plait, 

 with a central groove. 



Inhabits • . (Dr. Milligan's collection.) 



Shell shorter, but much thicker in general form than the 

 last; outer surface quite smooth; colour cinnamon, fulvous, 

 with a distinct white band on the top of the body whorl, 

 and another adjoining the suture. Umbilicus partially closed, 

 with a prominent marginal elevation, the intermediate space 

 being concave, and strongly marked by the lines of growth. 

 Outer lip very thick, but with a sharp edge, the flattened 

 portion scarcely concave ; the inner margin with a gradually 

 curved sinus, followed by two distinct, but unequal 

 granulated, obtuse teeth; the lower one only half the size 

 of the upper, and both feeling rough to the touch ; colour of 

 the aperture fulvous white. 



3. R. notata. 

 Banded Pinkmouth. 



Shell ovate, body whorl, with numerous hair-like trans- 

 verse striae ; lower fold of the body whorl simple ; inner 

 margin of the outer lip with a deep semicircular notch only ; 

 the flattened surface very concave. 



Inhabits . (Dr. Milligan's collection.) 



