PYRAMIDELLA. 305 



Subgenus OTOPLEURA, Fischer, 1885. 

 P. AURIS-CATI, Chemn. PL 73, fig. 95. 



Smooth, white, longitudinally ribbed, ribs ending in nodules 

 at the sutures, with spiral rows of chestnut spots, interstices of 

 the ribs spirally striated. Length, '75-1 inch. 



Philippines, Mauritius. 

 The synonyms are P. spiralis, Wood, P. plicata, Lam. 



P. NODICINCTA, A. Ad. PI. 73, fig. 100. 



White, with spiral rows of chestnut spots ; whorls angulated 

 above, with longitudinal ribs produced into nodules at the angles ; 

 lower part of body-whorl pitted, forming a sort of network be- 

 tween the pits. Length, *75-l inch. Philippines. 



I think this will prove to be a variety of the foregoing species. 



P. MITRALIS, A. Ad. PI. 73, figs. 94, 97, 2, 3. 



Whitish, clouded and indistinctly banded with pale brown; 



whorls rather convex, longitudinall}' ribbed, slightly angulated 



at the suture, interstices spirally striated. Length, 15-18 mill. 



Philippines, Taheiti ; Mauritius, Red Sea. 



P. PROPINQUA, A. Ad. (fig. 97), P. VARIEGATA, A. Ad. (fig. 3), 

 and P. MAGNiFiCA, Ads. and Reeve (fig. 2), appear to be syno- 

 nyms. 

 P. GLANS, Reeve. PL 73, fig. 98. 



White, with a narrow chocolate band above and below the 

 suture, the lower half of the body-whorl chocolate colored, longi- 

 tudinally closely ribbed, the interstices spirally striated. 



Length, 12 mill. Philippines. 



Possibly only a variety of the foregoing species. 



P. NITIDA, A. Ad. PL 73, fig. 99. 



Oral, shining, white, sometimes marbled with pale chestnut; 

 longitudinally flatly ribbed, interstices pitted. Length, 7 '5 mill. 



Philippines, Viti Is. 

 P. CORRUGATA, Lam. PL 73, fig. 4. 



White, with small sparse 3*ellow spots near the suture, longi- 

 tudinally plicate, the interstices spirally striated; columella 



three-plaited. Length, 23 mill. 



Isle of France (Coll. Lamarck). 



A doubtful species ; looks like a fossil. 

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