NO. 1205. SYNOPSIS OF THE XJIADES— SIMPSON. 821 



t NODULARIA ^GYPTIACA Cailliaud. 



^ Unio species nuovo Savigny, Icon. Moli. Egyj)t, 1813, pi. vii, figs. 3-6. 



Unto cv.gyptiaca Caillial'd, Voy. a Meroe, II, 1826, pi. lxi, figs. 6. 7.' — *Deshayes, 



An. sans Yert., 2cl ecT., 1835, p. 553; ""Enc.M^th. , II, 1830, p. 587.— *Catlow 



and Reeve, Conch. Nom., 1845, p. 58. 

 * Marc|ari^a ( Unio) egyptiacus Lea, Syn., 1838, p. 21. 



* Margaron {TJnxo) egyptiacus Lea, Syn., 1852, p. 32; 1870, p. 50. 



* Unio egyptiacus HAXLEY,Test. Moll., 1842, p. 198 ; " Biv. Shells, 1843, p. 198, pi. xx, 



fig. 56. — "KusTER, Couch. Cab., 1856, p. 157, pi. XLV, fig. 2. — ""H. and A. Adams, 

 Gen. Rec. Moll., II, 1857, p. 494.—*^ Reeve, Conch. Icon., XVI, 1865, pi. xxvi, 

 fig. 132.— * Westerlund, Fann. Pal,, II, Pt. 7, 1890, p. 179.—'* vox Martens, 

 Mai. Bl., XIII, 1866, p. 11.— *Morelet, Moll. Terr, et Flnv. 1868, p. 97.— 

 *JiCKELi (part) Faun. Moll. -N. 0. Af., 1874, p. 271, pi. x, figs. 1-8.— 



* KoBELT, Icon., new ed., 1886, p. 25, pi. xliv, figs. 262-265. 



''Unio eucyphus Bourguignat, Rev. et. Mag., IX, 1857, p. 19, pi. in, figs. 1-3. — 



* P/ETEL, Conch. Sam., Ill, 1890, p. 152. 



" Unio hourguignail Landran, Seance Soc. Sci. Nat. Seine, 1864, p. 5, pi. — , figs. 1-3. 

 " Pharaonia hourguignatl Rochebrune, Bull. Soc. Mai. Fr., Ill, 1886, p. 113. 



Nile system; High Oazaraance, West Africa (Vignoii); botli sides of 

 the equator iu Central Africa (Dolirn). 



t NODULARIA NILOTICA Cailliaud. 



Unio nilotica Cailliaud, Voy. a Meroe, II, 1826, jil. lxi, figs. 8, 9. — * Deshayes, 

 An. sans Vert., 2d ed., VI, 1835, p. 522 ; - Enc. Me'th., II, 1830, p. 585.— ■* Catlow 

 and Reeve, Conch. Nom., 1845, p. 61.—" Haxley, Test. Moll., 1842, p. 197; 

 ^ BiY. Shells, 1843, p. 197, pi. xxi, fig. 39.—" H. and A. Adams, Gen. Rec. Moll., 

 n, 1857, p. 494.—* A-ON Martexs, Mai. BL, XIII, 1866, p. 13.—* P^etel, Conch. 

 Sam., Ill, 1890, p. 161.— * Westerlund, Faun. Pal., II, Ft. 7, 1890, p. 180. 



* Margarita ( Unio) niloticus Lea, Syn., 1836, p. 29; 1838, p. 21. 



* Margaron ( Unio) niloticus Lea, Syn., 1852, p. 31 ; 1870, p. 50. 

 Unio pumilus Zeigler, manuscript, aud of authors. 



* Unio parreyssi Philippi, Conch., Ill, 1848, p. 81, pi. v, fig. 6. — * Jickeli, Faun. 



Moll. N. 0. Af., 1874, p. 373. 



* Unio rugifer KliSTER, Couch. Cab. Unio, 1856, p. 1.57, pi. xlv, figs. 3,4. — * voN 



Martens, Mai. B1.,XIII, 1866, p. 12.— * Westerlund, Faun. Pal., II, Pt. 7, 

 1890, p. 180. 



* Unio sennaariensis Kuster, Conch. Cab. Unio, 1862, p. 280, pi. xciv, figs. 



5, 6.— ■ P^tel, Conch. Sam., Ill, 1890, p. 167. 



* Unio ceneus Jickeli, Faun. Moll. N. O. Af., 1874, p. 274, pi. ix, fig. 2. — *P.etel, 



Conch. Sam., Ill, 1890, p. 144. 



* Unio cltarhonnieri Bourguignat, Un. and Ir. Tan., 1886, p. 9.—* Icon. Mai. Tan., 



1888, pi. XX, figs. 1, 2.— *PiETEL, Conch. Sam., Ill, 1890, p. 147. 

 ''Unio co«7&o).si Bourguignat, Un. and Ir. Tan., 1886, p. 12; * Icon. Mai. Tan., 



1888, pi. XX, figs. 3, 4.— *P.ETEL, Conch. Sam., Ill, 1890, p. ,149. 

 ^Unio dromauxi Bourguignat, Un. and Ir. Tan., 1886, p. 17; "Icon. Mai. Tan , 



1888, pi. XXII, figs. 1. 2.— *P.ETEL, Conch. Sam., Ill, 1890, p. 151. 



^This species is often credited to Ferussac, but I do not know that he ever described 

 it. It is considered by mauy to be the same as Nodularia nilotica, but the compar- 

 ison of large series of material and authentic specimens in the Lea collection from 

 Cailliaud incline me to separate them. There is, however, great variation in their 

 characters, hnt wgyjMaca is a thinner, more rounded shell than vilolicus, and has 

 lamellar pseudo-card iuals. 



