PYRAMIDELLA. 301 



P. PULCHELLA, A. Ad. PL 72, fig. 75. 



Shell polished, yellowish white, with a sutural chocolate band, 

 appearing on the periphery of the last whorl ; columella with 



two plications. 



Red Sea, Japan. 



Described as having a single plication on the columella, which 

 would place it in Syrnola, but a second plica is more or less 

 developed. 



Section LONCIUEUS, Morch, 1874. 



P. ACUS, Gmel. PL 72, figs. 76-78. 



Polished, white, with dark chestnut or chocolate spots, usually 

 arranged in three revolving series on the spire whorls and five 

 series on the body; columella three-plaited, the upper plait largest, 

 lip sometimes lirate within. Length, 1*25-2 in. 



Polynesia, Mauritius, Red Sea. 



It is P. punctata (Chemn.), Morch ; P. guttata, Link, and 

 P. maculosa, Lam. The peripheral groove becomes in this, as in 

 most of the other species of the section, either obsolete or 

 indicated by a slight angle. 



P. SULCATA, A. Ad. PL 72, figs. 79-83. 



White, nebulousl} 7 ' longitudinally strigate with pale orange- 

 chestnut, frequently breaking up into revolving series of dots ; 

 aperture channeled at the aperture, columella three-plicate. 



Length, 1-1-5 in. 



Sandwich Is., Philippines, Australia, Mauritius, Red Sea. 



Adams has used for this species a MS. name given it by 

 Nuttall; P. tessellata, A. Ad. (fig. 80), is founded on a younger 

 slimmer individual ; P. monilis, A. Acl. (fig. 81), represents a 

 faded specimen of the same form and age, and P. teres, A. Ad. 

 (fig. 82), is from a still younger, faded specimen. All these 

 forms, and the intermediates, are represented in the series before 

 me. I am inclined to place here also, P. Pratii, Bernardi (fig. 

 83), a specimen from unknown locality, having the characters of 

 coloration and basal sinus of P. sulcata, but with a deeper per- 

 ipheral groove and angle than usual. 



P. TURRITA, A. Ad. PL 72, fig. 84, 85. 



Fulvous, obsoletely maculated with a deeper tint ; whorls 



