84 PERISTERNIA. 



I add also to the synonymy P. decorata^ A. Ad. (fig 91), 

 which, according to Mr. E. A. Smith's careful description can be 

 no other than this species : the necklace-like rows of tubercles 

 beneath the sutures are developed in several specimens of chloros- 

 toma before me. 



P. usTULATA, Reeve. PL 65, figs. 85-90. 



Reddish brown, sometimes darker beneath the periphery and 

 at the sutures, dark chocolate at base of shell. 



Length, 1-1-4 inches. 



New Caledonia, Viti Isles, Tonga Taboo, 



Mauritius, Indian Ocean. 



The sculpture is not unlike the preceding species, but the color 

 differs, and the shell is not only larger, but narrower, with longer 

 spire and canal. The dark base is a character in common with 

 P. chlorostoma ; otherwise, the species varies greatly, particu- 

 larly in sculpture, and has thus received several names. These 

 synonyms are P. Caledonica, Petit (fig. 8*?), P. iricolo?-, Hombr. 

 et Jacq. (fig. 88), P. infracincta, Kobelt (fig. 89), which is a 

 light colored variety with a dark, interrupted, sub-sutural band, 

 and P. 3Iarquesana, A. Adams (fig. 90). 



P. MACULATA, Recvc. PL 66, figs. 93, 94. 



Yellowish white, irregularly stained and variegated with red 

 blotches ; the nodules upon the ribs whitish. Length, 1 inch. 



Mauritius. — Robillard. 



Is perhaps only a variety of the preceding species. P. macu- 

 lata, Hombr. et Jacq., described from a single specimen, is 

 evidently the same species. 



P. NANA, Reeve. PL 66, fig. 95. 



Yellowish broAvn ; columella pink. Length, 1 inch. 



Java. — Dunker. 



Resembles P. maculata, Rve., so closely that I suspect it to be 

 a light colored form of it. 



P. BicoLOR, Kobelt, PL 66, fig. 96. 



Whitish, purple-brown between the ribs, on the last whorl two 



rows of purple spots in the interstices ; mouth and apex yellowish. 



Length, 1*6 inch. 



Locality unknown. 



