UNIO 541 
Unio pallens RossMASSLER, Icon., XI, 1842, p. 13, pl. Liv, fig. 
749. 
Unio hispanus Rossmassier, Icon., XII, 1844, p. 26, pl. iv1, 
fig. 747.—Bourcuienat, Moll. Peu. Con., 1863, p. 46, pl. 
XXIV, figs. 1-3; Rev. et Mag., XVII, 1865, p. 344, pl. xxi, 
figs. 1-3. 
Unio aleroni CoMPANYO and Massor, Bull. Soc. Pyr. d’Or, VI, 
Pt. 2, 1845, p. 234, fig.—Bourcuicnat, Moll. Peu. Con., 
1863, p. 49, pl. xxin, figs. 1-3; Rev. et Mag., XVII, 186s, 
pixie figs. 13 
Unio ravoisieri DesHAyus, Hist. Nat. Moll. Aceph. Alg., 1848, 
pl. evi, figs. 4-7—Bourcuicnat, Mal. Alg., 1864, p. 291, 
pl. xx, figs. 5-10.—Simpson, Syn., 1900, p. 687. 
Margaron (Unio) ravoisieri Lea, Syn., 1870, p. 48. 
Unio ravoisiert var. tssericus Koper, Icon., new ser., I, 1884, 
p.i65, pl. XXVilt, fis. 215. 
Umo rousu Dupuy, Hist. Moll., VI, 1852, p. 653, pl. xvuut, 
fig. 18.—Muscrave, Phot. Conch., 1863, pl. 1, fig. 7. 
Unio valentinus RossMASSLER, Icon., IIT, 1854, p. 37, pl. LXIXx, 
p. 852.—Bourcuicnar, Moll. Peu. Con., 1863, p. 45, pl. 
ReOWEE Rew. cto Mass Zook, XVI; 1865; p..343,- pl xx 
Margaron (Unio) valentinus Lea, Syn., 1870, p. 52. 
Unio ardusianus Mogutn-Tanpon, Hist. Moll. Fr., II, 1855, 
P. 575- 
Unio graellsianus BourcuIGNAT, Moll. Peu. Con., 1863, p. 47, 
pl. xxut, figs. 4-7; Rev. et Mag., 1865, p. 345, pl. x1x, figs. 
4-7. 
? Umio letourneuxit BourcuicNat, Mal. Alg., 1864, p. 280, pl. 
Xvit, fig. 47. 
Unio courguimianus Bourcuicnatr, Moll. Peu. Con., 1863, p. 
48 ; part, Rev. et Mag., 1865, p. 346, pl. xxu1, figs. 1, 2. 
Unio siculus Sowrersy, Conch. Icon., XVI, 1868, pl. Lxx1, fig. 
264. 
Unio alexandri Korrvt, Icon., tst sup., 1895, p. 14, pl. 1, 
fig. 2. 
