650 PROCEEDINGS OF THE NATIONAL MUSE I'M. VOL.XXII. 



sbiuiug; teeth rudimentary, one in each valve, sometimes rather sharp 

 pointed and flattened; hinge with occasional vestiges of laterals; epi- 

 dermal matter mingled with the nacre on the hinge; nacre brilliant, 

 often finely radially ridged, especially at the palleal line. 

 Animal unknown. 



GABILLOTIA PSEUDODOPSIS Locard. 



< Anotlonta pseudodopsis LOCARD, Mai. d'lacs Tilt., 1883, p. 61, pi. xixhis., ligs. 



1-3. 

 "Gabillotia paeudodopsix, SKRVAIN, Bull. Soc. Mai. Fr., VII, 1890, p. 296, tig. 



Syria. 



GABILLOTIA LOCARDI Servain. 



*Gabillotia locardi SERVAIN, Bull. Soc. Mai. Fr., VII, 1890, p. 296, pi. v, figs. 1,2. 

 Asia Minor. 



GABILLOTIA OPPERTI Bourguignat. 



* Unio opperti liouryuignat, Rev. etMag., VIII, 1856, p. 71, pis. viu, fig. 6; ix, fig. 1. 



* Pseudodon opperti WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 182. 

 * Margaritana opperti P.ETEL, Conch. Sain., Ill, 1890, p. 173. 



*Margaritana euphratica KOBELT, Icon., new ed., II, 1886, p. 26, pi. XLV, fig. 266. 



Euphrates River. 



fGABILLIOTIA EUPHRATICA Bourguignat. 



* Unio enphraticus BOURGUIGNAT, Test. Nov., 1852, p. 28; * Cat. Rais.. 1853, p. 75, 



pi. iv, figs. 1-3; * Rev. et Mag., VIII, 1856, p. 72. 



* Pseudodon euphratica CONRAD, Am. Jl. Conch., I, 1865, p. 233. 

 Margaritana euphratica VON MARTENS, Vorderas Conch., 1874, p.* KOBE IT, 



Icon., new ed., II, 1886, p. 26, pi. XLV, fig. 266. * P.ETEL, Couch. Sam., Ill, 

 1890, p. 173. 



* Leguminaia euphratica WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 188. 



* Unio churchillianus SOWERBY, Conch. Icon., XVI, 1868, pi. xcvi, fig. 526. 



| GABILLOTIA EUPHRATICA var. CHURCHILLIANUS Bourguignat. 



* Unio churchillianus BOURGUIGNAT, Rev. et Mag., 1857, p. 18, pi. n, figs. 1-4. 



* P^TEL, Conch. Sain., Ill, 1890, p. 148. 



* Pseudodon churchillianus WESTERLUND, Faun. Pal., II, Pt.7, 1890, p. 183. 



*t Monocondylcva rhomboidea LEA, Pr. Ac. N. ScL, Phila., Ill, 1859, p. 187; * Jl. Ac. 

 N. Sci., Phila., IV, 1860, p. 263, pi. XLII, fig. 143; *Obs., VII, 1860, p. 81, pi. 

 XLII, fig. 143. 



* Margaron (Monocondylcea) rhomboidea LEA, Syn., 1870, p. 72. 



* Microcondyla>,a rhomboidea P.ETEL, Conch. Sam., Ill, 1890, p. 175. 



* Leguminaia rhomboidea KOBELT, Icon., new ed.,VI, 1893, p. 94, pi. CLXXVIII, figs. 



1124, 1125. 



* Unio rhomboideus SOWERBY, Conch. Icon., XVI, 1868, pi. LXXXIX, fig. 480. 



* Pseudodon rhomboideus WESTERLUND, Faun. Pal., II, pi. vu, 1890, p. 183. 



Asiatic Turkey. 



