954 NODULARIA 
Lanceolaria bilirata Haas, Con. Cab., Unio, 1910, p. 55, pl. 4, 
figs. 3-5. 
“Similar to the Japanese NV. oxyrhynca Marts., not only in 
the two elevated lines that run down on the upper half of the 
posterior end, but also in the proportionately shorter form, but 
not quite so sharply pointed. Ona younger specimen, only 54 
mm. in length, on the under side of the hinder end, some 
grooves and swellings are noticeable, which recall those of the 
Chinese NV. grayana Lea, and therefore establishes a natural 
relationship with that group, but nothing of this is seen in the 
adults.” 
Dautzenberg and Fischer, (1. c.), consider this species iden- 
tical with N. friihstorfert. 
NoDULARIA LAEVIS von Martens. 
“Shell elongate, thick, above angulated and slightly convex, 
compressed below, smooth except for the growth lines, brown, 
paler posteriorly, not shining, anterior end very shortly round- 
ed, posterior produced in a long, narrow, straight beak, ob- 
tusely angled at the end; posterior dorsal margin at first hor- 
izontal, thence from a little before the end of the lgament 
descending in a straight line; ventral margin slightly sinuous 
in the middle and somewhat wider posteriorly ; cardinal teeth 
two in both valves, triangular, sulcate, in the right valve the 
posterior and in the left valve the anterior is much the heavier ; 
lateral teeth elongate, nearly straight, one in the right valve, 
slightly bifid, two in the left valve, parallel; sinulus not con- 
spicuous. Interior very pale yellow, somewhat shining; an- 
terior adductor muscle impressions deep, posterior superficial. 
Length 73, height 15, diam. 10 mm. Beaks situated at 1-7 
of the length.” (von Martens). 
Type locality, Tonkin. 
Nodularia (Lanceoiaria) levis von Marrens, Nachr. Deutsch. 
Mal. Ges., 1902, p. 134.—DauTzenBerc and H. FIscHer. 
Jide .Concheaiclil; 1005. p..204. 
Lanceolaria levis Haas, Con. Cab. Unio, 1910, p. 57, pl. 4, 
fics.'6: 
