UNIO 551 
The only difference I can see between Bourguignat’s Unio 
grelloisianus and his jordanicus is that the former is much 
smaller. The figure of the latter in the Magazin shows it to 
be nearly 28 mm. in diameter instead of 22 as Bourguignat 
states. Both. have the same form, degree of inflation, solidity 
and sculpture and very similar teeth, and both are from the 
Jordan River. 
UNIO ELLIPSOIDEUS Locard. 
Shell subelliptical or suboval, rather solid, somewhat inflated, 
inequilateral ; beaks elevated above the dorsal line, subinflated, 
their sculpture not observed; posterior ridge rounded, ending 
behind in a rather blunt point about on the median line; an- 
terior end rounded, scarcely if at all angular above; base line 
evenly curved; surface with low, concentric ridges; epidermis 
brilliant, burnt-yellow, darker or greenish anteriorly, blackish 
behind; pseudocardinals ragged, subcompressed; laterals 
curved, delicate ; nacre white, rose-color in the cavities. 
Length 55, height 32, diam. 23 mm. 
Lake Tiberias. 
Unio ellipsoideus Locarp, Arch. Mus. Lyon, III, 1883, p. 211, 
pl. xx1, figs. 1-3.—Si1MPsoN, Syn., 1g00, p. 690.—KOoBELT, 
icon. new ed. oN LET tor, p-.50; pl.pix, fig. 2677: 
Unio genezarethanus Locarp, Arch. Mus. Lyon., II, 1883, p. 
213, pl. xxi, figs. 4-6—Koser, Icon., new ed., XVIII, 
fOi2-p>:50, pl. Dix, fig..2678. 
Unio jauberti Locarp, Arch, Mus. Lyon., ILI, 1883, p. 248, pl. 
XxIL, figs. 8-to.—Kose.t, Jcon., new ed., XVIII, 1912, p. 
54, pl. pvir, figs. 2670, 2671. 
Unio sabulonicus Korri/r, Tcon., new ser., VI, 1893, p. 96, pl. 
CLE ie, fie: 1120s 
Unio lorteti Korner, Icon., rst sup., 1805, p. 14, pl. v, fig.3. 
Unio kobelti Roig, Icon., 1st sup., 1895, p. 15, pl. vi, fig. 3. 
Unio pietri Korner, (part), Icon., ist sup., 1895, p. 16, pl. vi, 
AES) 11:2. 
Unio herodes Koper, Icon., tst sup., 1895, p. 17, pl. vi, fig. 4. 
