160 PURPURA. 



P. HAUSTRUM, Montf. PI. 43, fig. 25. 



Exteriorly various shades of chocolate ; within the aperture 

 Wuish wliite, more or less tinged with chocolate. Substance of 

 shell thin. Length, 2-3"5 inches. 



Australia; New Zealand. 



P. PERSiCA, Linn. PI. 43, figs. 24, 23. 



Brown, with narrow revolving zones of white alternating with 

 dark chocolate ; aperture bluish or pinkish, with interrupted 

 narrow revolving brown lines upon the interior of the outer lip. 



Length, 3-4 inches. 



PJiilippines. 



r. iiieniut., Reeve (fig. 23), does not differ, and F. Jiadolphvi, 

 Chemn., is so close that its identity may be suspected. 



P. RuDOLPHii, Chemn. PL 44, fig. 26. 



Shell heavier than P. persica, with usually higher spire ; two 

 or three of the revolving zones develop tubercles ; whorls some- 

 what shouldered ; outer lip less dilated and thicker than in 

 F. persica; columella straightev and less patulous. 



Length, 2-3 inches. 



Philij)pi7ies. 

 r. CHOCOLATUM, Duclos. PI. 44, figs. 2Y-2i). 



The substance of tlie shell is uniformly thin ; color unifoi-m 

 chocolate, the columella tinged with orange, the interior bluish 

 or yellowish. In some young specimens the whorls are rounded, 

 without angles or tubercles, whilst others, of same size, have the 

 shoulder and tubercles equally developed witli the adult. 



Length, 3-5 inch. 



Peru. 



D'Orlngu}^ found clusters of eggs (fig. 28) in Ma}'. He says 

 that the mollusk is very active in its movements, and that, 

 judging from the quantity of shells foimd in the vicinity of the 

 ancient tombs at Arica, it must have been a favorite article of 

 diet with the aborigines. 



P. Lefevrei, Lesson. 



Said to belong to the Patula-group. Has not lieen figured or 



identified. 



Pacific 0. 



