NO. 1205. SYNOPSIS OF THE NAIADES SIMPSON. 821 



t NODULARIA ^EGYPTIACA Cailliaud. 



* Unio species nuovo SAVIGNY, Icon. Moli. Egypt, 1813, pi. vn, figs. 3-6. 



Unio (Kgyptiaca CAILLIAUD, Voy. si Me'roe', II, 1826, pi. LXI, figs. 6. 7.' *DESHAYES, 

 An. sans Vert., 2d ed., 1835, p. 553; *Enc. Me"th. , II, 1830, p. 587. *CATLOW 

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



* Margarita ( Unio) egyptiacus LEA, Syn., 1838, p. 21. 



* Margaron ( Unto) egyptiacus LEA, Syn., 1852, p. 32; 1870, p. 50. 



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



fig. 56. *KUSTER, Conch. 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, Faun. Pal., II, Pt. 7, 1890, p. 179.* VON MARTENS, 

 Mai. Bl., XIII, 1866, p. 11. *MORELET, Moll. Terr.etFlnv. 1868, p. 97. 

 *JICKELI (part) Faun. Moll. N. O. Af., 1874, p. 271, pi. x, figs. 1-8. 



* KOBELT, Icon., new ed., 1886, p. 25, pi. XLIV, figs. 262-265. 



"Unio encyphus BOURGUIGNAT, Rev. et. Mag., IX, 1857, p. 19, pi. in, figs. 1-3. 



* P^TEL, Conch. Sain., Ill, 1890, p. 152. 



* Unio bourguignall LANDRAN, Seance Soc. Sci. Nat. Seine, 1864, p. 5, pi. , figs. 1-3. 



* Pharaonia bourgiiignati ROCHEBRUNE, Bull. Soc. Mai. Fr., Ill, 1886, p. 113. 



Xile system; High Cazamance, West Africa (Vignon); both sides of 

 the equator in Central Africa (Dohrn). 



t NODULARIA NILOTICA Cailliaud. 



Unio nilotica CAILLIAUD, Voy. a Me'roe, II, 1826, pi. LXI, figs. 8, 9. * DESHAYES, 

 An. sans Vert., 2d ed., VI, 1835, p. 522 ; * Enc. Mc'th., II, 1830, p. 585. * CATLOW 

 and REEVE, Conch. Nom., 1845, p. 61. * HANLEY, Test. Moll., 1842, p. 197; 



* Biv. Shells, 1843, p. 197, pi. xxi, fig. 39.* H. and A. ADAMS, Gen. Rec. Moll., 

 II, 1857, p. 494. * vox MARTENS, Mai. Bl., XIII, 1866, p. 13. *P^:TEL, Conch. 

 Sam., Ill, 1890, p. 161. * WESTERLUXD, Faun. Pal., II, Pt. 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 pumil us ZEIGLER, manuscript, and of authors. 



* Unio parreyssi PHILIPPI, Conch., Ill, 1848, p. 81, pi. v, fig. 6. * JICKELI, Faun. 



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



* Unio rugifer KUSTER, Conch. Cab. Unio, 1856, p. 157, pi. XLV, figs. 3,4. "VON 



MARTENS, Mai. BL, 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 aneus JICKELI, Faun. Moll. N. O. Af., 1874, p. 274, pi. ix, fig. 2. * P^TEL, 



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



* Unio charbonnieri BOURGUIGNAT, Un. and Ir. Tan., 1886, p. 9. "Icon. Mai. Tan., 



1888, pi. xx, figs. 1, 2. *P,ETEL, Conch. Sam., Ill, 1890, p. 147. 

 *Unio couJboisi BOURGUIGNAT, Uu. and Ir. Tan., 1886, p. 12; *Icon. Mai. Tan., 



1888, pi. xx, figs. 3, 4. *P.KTEL, Conch. Sam., Ill, 1890, p. 149. 

 *Unio dromatixi BOURGUIGNAT, Un. and Ir. Tan., 1886, p. 17; * Icon. Mai. Tan , 



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



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

 it. It is considered by many 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, but aigyptiaca is a thinner, more rounded shell than niloticus, and has 

 lamellar pseudo-cardinals. 



