NO. 1205. SYNOPSIS OF THE NAIADES— SIMPSON. 915 



Animal having the mantle united behind into two short, separate, 

 contractile siphons, according to Gray.^ 



t LEILA BLAINVILLEANA Lea.^ 



* Anodonta ilainvilleana Lea, Tr. Am. Phil. Soc, V, 1834, p. 77, pi. xii fio-. 35- 



*Obs., I, 1834, p. 189, pi. xii, fig. 35.— *Hanley, Test. Moll., 1842, p. 222; 

 ^ Biv. Shells, 1843, p. 222, pi. xxiv, fig. 18. 



* Margarita {Anodonta) hlainvilleana Lea, Syn., 1836, p. 53; 1838, p. 31. 



* Anodon hlainvilleana Catlow and Reeve, Conch. Nom., 1845, p. QQ. 

 ^ Margaron {Anodonta) hlainvilleana Lea, Syn., 1852, j). 52. 



"^ Leila hlainvilleana PL and A. Adams, Gen. Rec. Moll., II, 1857, p. 507; III, pi. 

 cxix, figs. 4, 4a. — * Chenu, Man., 1859, II, p. 148, fig. 730. 



* Columba hlainvilleana Clessin, Couch. Cab. Auo., 1876, p. 253, pi. lxxxvi, fio-g. 



1, 2.—* P^TEL, Conch. Sam., Ill, 1890, p. 188. 



* Anodon j^rishii Gray, Pr. Zool. Soc. Lond., 1834, p. 57. ^ — *Muller, Syn. Nov. 



Gen., 1836, p. 195. — * Catlow and Reeve, Conch. Nom., 1845, p. 67. 

 ^Margarita (Anodonta) parishii LiKa, Syn., 1836, p. 53; 1838, p. 31. 

 "" Anodonta parishii Ka^imy, Test. Moll., 1842, p. 222; * Biv. Shells, 1843, p. 222. — 



* Pjstel, Conch. Sam., Ill, 1890, p. 183. 



* Margaron {Anodonta) parisliii Lea, Syn., 1852, p. 52. 



"Leila parisliii H. and A. Adams, Gen. Rec. Moll., II, 1857, p. 507. 



* Anodon Mans Sowerby, Conch. Icon., XVII, 1867, pi. iv, fig. 8. 



Peru; Brazil; south to Argentina. 



t LEILA ESULA d'Orbigny. 



*Iridina esula d'Orbigny, Guerin Mag., 1835, p. 43; " Voy. Am. Mer., 1843, p. 597. 

 Anodonta esula Jan, Charpentier and Jan, Cat., 1837, p. 24.'' 

 '^Margarita {Anodonta) esula Lea, Syn., 1838, p. 32. 

 '^Margaron {Anodonta) esula Lea, Syn., 1852, p. 52. 

 ^ M argaron (Columha) esula Lea, Syn., 1870, p. 86. 



* Leila esula H. and A. Adams, Gen. Rec. Moll., II, 1857, p. 507. 

 ^Anodonta arcuata Hanley, Biv. Shells, 1843, p. 223. 



* Leila jmlvinata Hupe, Moll. Nouv., Ill, 1857, p. 90, pi. xx, fig. 1. 



^Columha pulvinata Clessin, Conch. Cab.Ano., 1876, p. 25.5, pi. lxxv, figs. 1, 2. — 



* P^TEL, Conch. Sam., Ill, 1890, p. 188. 



"" Anodon pulvinatus Sowerby, Couch. Icon., XVII, 1867, pi. v, fig. 10. 

 ''Leila castelnaudi Hupe, Moll. Nouv., Ill, 18.57, p. 91, pi. xix, fig. 1. — "von Mar- 

 tens, Mai. BL, XV, 1868, p. 201. 

 ^Anodon castelnaudi Sowerby, Conch. Icon., XVII, 1868, pi. xx, fig. 79. 



* Columha castehiaudii Clessin, Conch. Cab. Auo., 1876, p. 254, pi. Lxxxiv, figs. 



1, 2.—* P^TEL, Couch. Sam., Ill, 1890, p. 188. 



Bolivia; Brazil; Paraguay. 



lAnn. and Mag. Nat. Hist., VI, p. 316. 



2 The volume of the transactions in which Lea's name was published was issued, 

 according to Scudder, in August or September, 1834. Gray read the paper contain- 

 ing the description of his Anodon, ]}drisliii before the Zoological Society on July 8 of 

 the same year, and the date of publication of that volnme of the proceedings is 1834. 

 As I do not know just when it appeared, and as Lea's is the better known name, I 

 retain the latter. 



3 Gray states in a letter to Lea, November, 1834, that his J. parisliii and Lea's 

 hlainvilliana are tlie same. 



*• According to Lea. I have not seen this jjaper. The species is quite commonly 

 credited to Jan, but it was published by d'Orbigny under the name of Iridina esula 

 in 1835, and I am not aware that Jan described it earlier than 1837. 



