NODULARIA 1027 
blackish or brownish band near the border; teeth lamellar; 
nacre bluish-white. 
Length 33, height 20, diam. 15 mm. 
Faraba, on the Niger; Upper Senegal. 
Pharaonia bellamyi JouSSEAUME, Bull. Soc. Zool. Fr., XI, 1886, 
piso, pl xin: figs. 7a. 7D: 
Nodularia bellamy: Stimpson, Syn., 1900, p. 822. 
The figure shows this species to be almost evenly obovate, 
being slightly narrower in front where it is rounded, and the 
somewhat broader posterior end is almost evenly rounded. The 
posterior ridge is rounded or feebly double and the surface of 
the shell seems to be more or less granularly sculptured, the 
granules being arranged in broken lines. Its form and frail 
structure should distinguish it from allied species. The spec- 
imen described and figured may be young. 
NoODULARIA RENEA (Jousseaume). 
Shell slightly obovate, somewhat inflated, thin, inequilateral ; 
beaks moderately full and high; the umbonal region and sur- 
face generally sculptured with fine, zigzag-radial, granulous 
ridges; anterior end rounded, slightly angled above; base 
lightly curved, fuller and rounded behind the middle; dorsal 
slope obliquely subtruncated; posterior termination rounded ; 
posterior ridge widely rounded; epidermis yellowish-brown ; 
teeth delicate, lamellar; nacre bluish-white, somewhat irides- 
cent. 
Length 29, height 17, diam. It mm. 
Niger at Kayon; Senegal River; Upper Senegal. 
Reneus reneus JOUSSEAUME, Bull. Soc. Zool. Fr., XI, 1886, p. 
482, pl. xu, figs. 4a, 4b. 
Reneus faidherbi JousskAUME, Bull. Soc. Zool. Fr., XI, 1886, 
p. 483, pl. x11, figs. 5, 5a. 
Nodularia renea SIMPSON, Syn., 1900, p. 822. 
Less high in proportion to length than N. bellamyi and the 
basal outline is not so rounded. There is a shell and a left 
valve in the National Museum collection from Morelet labeled 
Unio faidherbi by him, which are feebly rayed and have but 
little zigzag sculpture. 
