SPATIIA 1339 



Length 62. of anterior region 27,, of posterior region 41. 

 height 36, at the beaks 14. diam. 24.5 mm." (Germain). 



Type locality, Comoe River, near the Gold Coast. 

 Spatlia stulilwanjii var. coinoecnsis Germain, Bull. Mus. Hist. 



Nat., XI\\ 1908, p. 127; Jl. de Con., LAM, 1908, p. 114, pi. 



Ill, fig. 12. 



Spatha decousei Germain. 



"Shell of medium size, elongate rectangular in shape ; valves 

 quite inflated, thick, heavy ; dorsal margin almost straight, 

 slightly ascending ; ventral margin decidedly sinuous, parallel 

 with the dorsal margin ; anterior region rather short, rounded ; 

 posterior region much extended, a little more than twice as 

 long as the anterior ; dorsal ridge not strong, very obtuse; beaks 

 obtuse, not compressed, scarcely prominent, much eroded, 

 showing a lead-colored nacre ; ligament short, quite strong, 

 18 n)m. long ; hinge filiform, edentulous ; anterior muscular 

 impressions very deep ; posterior quite faint ; pallial impres- 

 sion feeble. Kpidermis a beautiful deep brown, passing into 

 black anteriorly and posteriorly, much eroded towards the 

 beaks; lines of growth not strong and very irregular; nacre 

 bluish-white, slightly iridescent. 



Length 86, height 42, of umbones 39, length of anterior re- 

 gion 27, of posterior region 63, diam. 34 mm." (Germain). 



Type locality, Le Mamoun, Senoussi Country. 

 Spatha (L.eptospatha) dccorsci Germain, Bull. Mus. Hist. 



Nat., 1904, p. 469 ; TAfrique Cent. Fr., 1907, p. 557, pi. lith. 



fig- 5- 



"This species is to be distinguished from the Spatha (Lepto- 

 spatha) ^tuhUnanni von Martens by its subparallel dorsal and 

 ventral margins : by its anterior region less shortly truncate ; 

 by its posterior region more elongated, but terminating in a 

 beak much less sharp and not central and decidedly truncate as 

 in Sp. stnhlmaiim, but decidedly basal and broadly convex ; by 

 the ventral margin not convexly upcurved towards the pos- 

 terior region, but descending and very decidedly sinuous in the 

 central part, etc." 



