650 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.xxii. 



shining; 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. 



^Anodonta pseudodopsis Locard, Mai. d'lacs Tib., 1883, p. 61, pi. xixbis., figs. 



1-3. 

 ^GahiUotia pseudodopsix, Servain, Bull. Soc. Mai. Fr., VII, 1890, p. 296, fig. 



Syria. 



GABILLOTIA LOCARDI Servain. 

 ""Gahillotia locardi Servain, Bull. Soc. Mai. Fr., VII, 1890, p. 296, pi. v, figs. 1, 2. 

 Asia Minor. 



GABILLOTIA OPPERTI Bourguignat. 



* Unio opperti Bourguignat, Rev. et Mag., VIII, 1856, p. 71, pis. viii, fig. 6 ; ix, fig. 1. 

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

 *MargarUana opperti P.etel, Conch. Sam., Ill, 1890, p. 173. 



*Margaritana euphratica Kobelt, Icon., new ed., II, 1886, p. 26, pi. xlv, fig. 266. 



Euphrates Eiver. 



fGABILLIOTIA EUPHRATICA Bourguignat. 



* Unio euphraticus 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." — Kobei.t, 



Icon., new ed., II, 1886, p. 26, pi. xlv, fig. 266.— *P^tel, Conch. Sam., Ill, 

 1890, p. 173. 



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



* Unio churchillianiis Sowerby, Conch. Icon., XVI, 1868, pi. xcvi, fig. 526. 



t GABILLOTIA EUPHRATICA var. CHURCHILLIANUS Bourguignat. 



* Unio churchilliamis Bourguignat, Rev. et Mag., 1857, p. 18, pi. ii, figs. 1-4. — 



* P.ETEL, Conch. Sam., Ill, 1890, p. 148. 

 ''Pseudodon churchilliamis Westerlund, Faun. Pal., II, Pt.7, 1890, p. 183. 

 "^t Monocondyliva rhomboidea Lea, Pr. Ac. N. Sci., 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. 



* Mar gar on ( Monocondylwa) rhornboidea Lea, Syn., 1870, p. 72, 



* Microcondylcea 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. vii, 1890, p. 183. 



Asiatic Turkey. 



