994 NODULARIA 
rior end narrowed and rounded; base line straight to behind 
the middle, where it is very full, behind this swelling the base 
is obliquely truncated; dorsal line lightly curved; dorsal slope 
decidedly and obliquely truncated; surface covered with zig- 
zag-radial sculpture, dirty yellowish or greenish; pseudocar- 
dinals compressed, triangular ; nacre salmon-tinted. 
NTength 22, height 13, diam. 6 mm. 
Southeast Asia, no doubt. 
Unio gratiosus Puiiippt, Conch., I, 1845, p. 20, pl. 1, fig. 5.— 
?Kuster, Conch. Cab., Unio, 1861, p. 239, pl. Lxxx, fig. 3. 
Margaron (Unio) gratiosus LEA, Syn., 1870, p. 32. 
Nodularia gratiosa SIMPSON, Syn., 1900, p. 815. 
A very dubious species, the figure probably representing a 
young shell. I am very strongly inclined to believe that Des- 
hayes’ Unio anceps is the adult form of this species, Philippi’s 
figure representing a young, rather compressed form. Philip- 
pi’s locality, New Holland, is evidently erroneous. 
NopULARIA CRISPATA (Gould). 
Shell rather solid, inflated or subinflated, ovate or irregularly 
elliptical; beaks rather full and high, having zigzag-radial 
sculpture, which extends over the surface of the shell; dorsal 
outline curved ; anterior end rounded; base line lightly curved, 
full behind the middle; posterior ridge strong, sometimes 
slightly double, angled, ending in a point at or below the 
median line; surface dull greenish, the ridges darker ; pseudo- 
cardinals subcompressed to subsolid, ragged; laterals curved; 
muscle scars impressed ; nacre whitish to dirty flesh-colored. 
Length 1.7, height .9, diam. .5 in. 
British Burma. 
Unio crispata Goutp, Pr. Bost. Soc. Nat. Hist., I, 1843, p. 141. 
Unio crispatus Haney and THropaip, Conch. Ind., 1876, p. 
21, pl. xiv, fig. 1.—von Marrens, Arch. Naturg, LXV, 
T8990, p. 42, pl. v, fig. 3. 
Margaron (Unio) crispatus Lea, Syn., 1870, p. 32. 
Nodularia crispata Stpson, Syn., 1900, p. 815. 
