PYRAMIDELLA. 309 



P. HYALINA, Dkr. PL 73, fig. 25. 



Whitish, hyaline, smooth, polished ; whorls somewhat convex, 

 suture deep; lip quadrilirate within, columella uniplicate and 

 sinuate above. Length, 5'5 mill. 



Japan. 



Unfigured and Undetermined Syrnolx. 



P. BUXEA, Gould. Japan. 



P. BIFASCIATA, Woods. Tasmania. 



P. BIZONALIS, P. D^EDALA, P. LATEA, P. MERA, P. PISTILLUM, 



P. TERETIUSCULA, all of A. Adams. Japan. 



P. SUBULA, Gould. China Sea. 



P. LUCIDA, A. Ad, Eed Sea. 



P. TENUISCULPTA, Lischke (figure inaccessible to me). Japan. 



Section AGATHA, A. Ad., 1860. 

 P. AUSTRALIS, Angas. PI. 74, fig. 27. 



Acuminately ovate, rather thin, opaque, whitish ; whorls 8, 

 slightly convex, suture a little channeled ; columella with a strong 

 spiral plait. Length, 8 mill. 



Port Jackson, Australia. 



Section AMATHIS, A. Ad., 1861. 

 P. VIRGO, A. Adams (unfigured). Korea Strait; 46 fms. 



The following species are added by Mr. Adams, all of them 

 unfigured and from Japan : 



P. PRODUCTA (Odostomia) and P. PELLUCIDA, P. EBURNEA and 

 P. CONCINNA, described as Menestho. 



Section OSCILLA, A. Ad., 1867. 

 P. ANNULATA, A. Adams. PI. 74, fig. 28. 



Whitish 4 whorls numerous, flattened, spirally ribbed, the 

 interstices longitudinally striated ; columella with a single 

 posterior plication, lip subcrenulated, interior lirate. 



Length, 5 mill. 



Philippines; Singapore; Japan. 



