PISANIA. 147 



/ 



P. GRACILIS, Koch. PL 71, fig. 200. 



Light yellowish brown ; whorls cingulately silicate, the upper 

 portions lightly crossed by longitudinal folds or ribs. 



Length '7 inch. 



Nab. unknown. 



Probably a young shell ; generic characters doubtful. 



P. RETIOULATA, A. Adams. PI. 71, fig. 201. 



Light yellowish brown, sometimes marbled with reddish brown; 

 surface closely reticulated by longitudinal and revolving fine lines. 



Length, 1-25 inches. 



New Caledonia ; Tasmania. 

 Var. TASMANICA, Tenison-Woods. 



Smaller; white, with irregular varices. 



Mr. Woods says that the type is common in Tasmania. I give 

 an illustration from a specimen received from that locality. Mr. 

 Adams has not published a figure of his species. 



P, MARMOKATA, Reeve. PL 71, figs. 202, 203. 



Granulated by the intersection of obsolete longitudinal and 

 revolving ribs ; polished ; white with spots and clouds of light 

 chestnut. Length, 1-1 '5 inches. 



Philippines; Sandwich Isles ; Japan (Schrenck). 



Yar. BILLEIIEUSTI, Petit. Fig. 203. 



This is narrower than the type but does not seem to differ. 

 Petit naively says of it : " Si quelqu'un nous disait que notre 

 espece est le Bucc. marmoratum decrit par M. Reeve, nous 

 n'oserions, en veritc afllrmer le contraire." 



The variety is found at New Caledonia, and Viti Isles. The 

 form of this species is that of Pisania, birfc its sculpture is more 

 like Cantharus, and it might be placed in the latter genus with 

 perfect propriety. 



P. ciNis, Reeve. PL 71,fig. 204*. 



Reddish white, the granules chocolate-color. Length, 1 inch. 



Galapagos /., (under stones). 



Reeve says, u The granules of this shell impart a rough touch 

 to it, resembling that of a coal cinder." I think it very probably 

 identical with P. marmorata. 



