1018 NODULARIA 
NopuLARIA LIMA Simpson. 
Shell subrhomboid, inequilateral, subsolid, subcompressed ; 
beaks not greatly elevated; anterior end rounded; base line 
lightly curved; dorsal line curved; outline of dorsal slope 
obliquely subtruncated; posterior ridge full, rounded, ending 
in a rounded point near the base; sculpture said to be some- 
thing like that of U. scobina, but more linear and radial; epi- 
dermis olivaceous; pseudocardinals strong, ragged; laterals 
slightly curved; nacre bluish. 
Length 30, height 20 mm. 
Assam ; Cambodia. 
Unio radula BeENson, in Hanley, Biv. Shells, Supp., 1856, p. 
382.—Han_ey and THEOBALD, Conch. Ind., 1876, p. 5, pl. x, 
fig. 3. 
Dysnomia radula RocHEBRUNE, Bull. Soc. Phil., VI, 1882, p. 
42. ae 
Nodularia lima Stimpson, Syn., 1900, p. 820. 
I know nothing of this species except from the figures and 
brief description. It may belong in the group of Nodularia 
cerulea, though the description in the Bivalve Shells would 
seem to indicate that the sculpture was inclined to be radial. 
The name radula was used by Say for a Unio in 1829, hence 
T have changed the name of this to Jima. 
Var. siliguriensis Preston. 
“Shell inequilateral, ovate oblong, reddish-brown, sculptured 
with concentric lines of growth and oblique, transverse wrink- 
les, these latter being especially marked posteriorly ; anterior 
side rounded; posterior side acuminately rounded; dorsal mar- 
gin arched; ventral very slightly contracted in the middle; 
umboes much eroded; interior of shell iridescent, pale bluish- 
white. 
Longe.21, lat.37:35 mm: (Preston): 
Unio siliguriensis Preston, Rec. Ind. Mus., Calcutta, II, 1908, 
Pp. 47. 
Nodularia lima var. siliguriensis Preston, Rec. Ind. Mus., VI, 
IOU2 pi 2on* 
