904 PROCEEDINGS OF THE NATIONAL MTSEUM. VOL.XXII. 



* MUTELA NILOTICA Sowerby. 



* Iridina nilotica SOWERBY, Zool. Jourual, I, 1835, p. 53, pi. n. *?CAILLIAUD, 

 Voy. a Mero6, 1826, pi. LX, fig. 12. *Auouix, SAVIGNY, Icon. Moll. Egypt, 

 1827, pi. vii, fig. 2." CROUCH, 111. Int. Lam., 1827, p. 17, pi. x, fig. 1. 

 *LEA, Syn., 1836, p. 56.* HANLEY, Biv. Shells, 1843, p. 225.* CATLOW and 

 RKEVE, Conch. Norn., 1845, p. 68.* DESHAYES, Tr. Ele., II, 1853, p. 219, pi. 

 xvn, ligs. 6, 7. *CHEXU, Man., 1859, II, p. 148, fig. 727. * SOWERBY, 

 Conch. Icon., XVI, 1868, pi. n, fig. 4. 



*Platiris (Spatha) nilotica LEA, Syn., 1838, p. 33. 



* Mytilus niloticns WOOD, Ind. Test. Rev., 1856, p. 207, pi. n, sup. fig. 1. 



* Mutela nilotica H. and A. ADAMS, Gen. Roc. Moll., II, 1857, p. 506. *JICKELI, 



Faun., 1874, p. 259. * P.ETEL, Conch. Sam., Ill, 1890, p. 187. * WESTER- 

 LUXD, Faun. Pal., II, Pt. 7, 1890, p. 313. 



*? Mutela jouberti BOURGUIGNAT, Un. et Ir., 1886, p. 28; * Icon. Mai., 1888, pi. 

 xxni, fig. 1. "P.ETEL, Conch. Sam., Ill, 1890, p. 187. 



* 1 Mutela visseri BOURGUIGXAT, Un. et Ir., 1886, p. 31. *P^ETEL, Conch. [Sam., 



Ill, 1890, p. 187. 



* Mutela rysseri BOURGUIGXAT, Icon. Mai., 1888, pi. xxni, fig. 3. 



MUTELA NILOTICA var. EMINI von Martens. 



* Mutela nilotica var. eminl vox MARTEXS, Besch., 1897, p. 253. 

 Tropical Africa. 



f MUTELA ANGUSTATA Sowerby. 



* Iridina angustata SOWERBY, Conch. Icon., XVI, 1868, pi. n, fig 5. 



* Mutela angustata JICKELI, Faun. N. O. Af., 1874, p. 268.* P.ETEL, Conch. Sam., 



Ill, 1890, p. 187.* WESTERLUND, Faun. Pal., II., pi. 7, 1890, p. 312. 



Tropical Africa. 



t MUTELA ALATA Lea. 



* Spatha alata LEA, Pr. Ac.N. Sci. Phila., 1864, p. 109; * Jl. Ac.N. Sci. Phila., 1866, 



p. 35, pi. xii, fig. 31; *Obs.,XI, 1867, p. 39, pi. xn, fig. 31. * P.ETEL, Conch. 

 Sam., Ill, 1890, p. 188. 



* Platiris (Spatha) alata LEA, Syn., 1870, p. 89. 



* Mutela alata CLESSIX, Conch. Cal>. Ano., 1876, p. 196, pi. LXII, figs. 7, 8. *AXCEY, 



Bull. Soc. Zool. de Fr., 1894, p. 232.* VON MARTEXS, Besch., 1897, p. 253. 



* Burtonia alata AXCEY, Bull. Soc. Mai. Fr., VI, 1889, p. 38. 



Lake Nyassa. 



MUTELA SIMPSONI Ancey. 



* Mutela simpsoni AXCEY, Bull. Soc. Zool. de Fr., VII, 18J4, p. 233, fig. 8. 



* Mutela alata var. simpsoni vox MARTENS, Besch., 1897, p. 253. 



Shire and Karonga rivers, near Lake Nyassa. 



MUTELA BOURGUIGNATI Bourguignat. ' 



* Mutela bourguignati BOURGUIGXAT, Esp. Ouk., 1885, p. 8. "SMITH, Ann. and 



Mag., X, 1892, p. 128, pi. xn, fig. 16. "vox MARTEXS, Besch., 1897, p. 255. 



Lake Nyanza. 



1 Credited to Ancey, in lift. 



