Sl'ATIIA 



1343 



The National Museum possesses a shell of the above sent 

 by Ancey and named Mitfclina scnegalica bv Bourg'uignat him- 

 self. 



Germain. (1. c), erroneously .i^ives priority to scnegalcnsis. 

 The same author, (l- c), not only gives dk'aricata specific 

 rank, but puts it in a group by itself. 



Spatha martim (Rochebrune). 



"Shell solid, round elliptical, inequilateral, gaping poste- 

 riorly ; leek-green with bright yellow at the margins ; white at 

 the umbonal region, very polished and shining, very minutely, 

 circularly striate ; dorsal margin almost straight, oblique ; an- 

 terior margin round ; posterior abruptly descending, compress- 

 ed, subalate ; basal margin slightly convex ; umbones contigu- 

 ous, very small, transversely plicate, situated at almost 1-2 of 

 the length ; posterior slope subcompressed, quite distinctly 

 margined by a bifid sulcus ; ligament short, minute, internal ; 

 nacre pale whitish-yellow. 



Length 38, height 27, diam. 15 mm.'' (Rochebrune). 



Type locality. Bafing River, a tributary of the Senegal. 

 Mitriodon martini Rochebrune, Bull. Mus. Hist. Nat., 1904, 



p. 462. 

 Spatha (Leptospatha) vAartini Germain, Arch. Zool. Exp. et 



Gen., (5), I, 1909, p. 49. 

 Mitriodon falemeensis Rochebrune, Bull. Mus. Hist. Nat., 



1904, p. 462. 

 Mitriodon hendcJoti Rochebrune, Bull. Mus. Hist. Nat., 1904, 



p. 462. 



Germain. (1. c), states that the three species above quoted 

 are synonymous. 



Spatha complanata (Jousseaume). 



Shell elongated, convex, thin, somewhat elliptical, inequilat- 

 eral ; beaks but little elevated ; anterior end rounded, slightly 

 narrowed ; dorsal and basal outlines nearly straight ; posterior 

 end obliquely subtruncate above, bluntly pointed below the 

 median line ; surface nearly smooth, the epidermis being near- 



