LIOPLAX. 



55 



tifully rough appearance, which suggests its specific name. It is really 

 one of our handsomest species, and so unlike all others that no American 

 species can readily he mistaken for it. In most specimens the hody whirl 

 is very strongly carinate about the middle, and the outer lip is consider- 

 ably produced as in P. subsolida, nob. (^Anthony.) 



Fig. 111. 



LIOPLAX, Teoschel. 



Foot very large, rather thin, elongated, greatly produced be- 

 yond the snout, truncated before, and becoming slightly narrower 

 behind towards its rounded extremity. Colors as in Melantho. 



Head very small. Snout very 

 short. Lingual teeth smooth 

 at their apices or cusps. Tenta- 

 cles broader and rather shorter 

 than in Uelantho. Right ten- 

 tacle in the male very short, only 

 one-third the length of the left, 



Fig. 112. 



Female. Male. 



Animal of L. suhcarinata. Lingual dentition of L. subcarinuta. 



and bi'oader than the snout. Lingual dentition as in Melantho. 

 Kight cervical lappet narrow, not plicated, but extending be- 

 neath the right tentacle and snout, nearly to the base of the left 

 tentacle. Left cervical lappet very small. Branchiae 

 as in Melantho. {Stimpson.) Operculum with a sub- 

 spiral nucleus. 



Shell thin, ovate-turreted, imperforate, spire pro- 

 duced, whirls rounded, carinated, covered with a thin operculum 



of Liophix 



epidermis ; peristome thin, continuous. subcarinuta. 



Fig. 113. 



