1338 SPATIIA 



Spatha (Leptospatha) protchci Gkrmain, Bull. Mus. Hist. 



Nat, IQ09, p. 543, pi. VIII, fig. 46. 



Germain (1. c), remarks that this species is related to S. 

 cryptoradiafa Putzeys, but differs, "by its more compressed, 

 more regularly subquadrangular-elongated form; more central 

 beaks and by the parallelism of the dorsal and ventral mar- 

 gins." 



Spatha stuiilmanni von Martens. 



Shell elongated, irregularly subrhomboid, solid, subinflated, 

 inequilateral ; beaks apparently but little elevated ; posterior 

 ridge prominent, widely rounded or feebly subangulate, end- 

 ing in the base in a blunt, rounded point or feeble biangula- 

 tion ; dorsal outline arched : dorsal slope with a long, oblique 

 truncation ; anterior end rounded, narrowed a little ; base near- 

 ly straight, full behind the middle; surface concentrically, ir- 

 regularly sculptured ; epidermis blackish ; nacre w^hitish-gray. 



Length 71, height 35, diam. 24 mm. 



Length 60, height 30, diam. 24 mm. 



Lake Albert ; Nyanza. 

 Spatha stuhlmanni von Martens, Besch., 1897, p. 250, fig. — 



Simpson, Syn., igoo, p. 900. 



T have never seen this species, but from the figure and de- 

 scription I should think it was rather closely related to 6". 

 arcuala. It is not arcuate however, as that species is, the base 

 line being slightly rounded and full behind the middle. 



\ ar. comocensis Germain. 



"It seems to me to be impossible to separate this shell from 

 von Martens' species, of which it possesses the principal char- 

 acters, but from which it is easily distinguished : by its very 

 noticably less elongated form, by its anterior end more regu- 

 larly convex with a more prominent anterio-dorsal angle ; fin- 

 ally by its more convex dorsal margin. 



The shell is solid, brilliant, olive-green near the beaks, yel- 

 lowish-brown below ; the lines of growth are quite strong and 

 irregular ; finally the nacre is slightly salmon-tinted, very iri- 

 descent. 



