NO. 1205. SYNOPSIS OF THE NAIADES SIMPSON. 915 



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

 contractile siphons, according to Gray. 1 



t LEILA BLAINVILLEANA Lea.- 



* Anodonta blainvilleana LEA, Tr. Am. Phil. Soc., V, 1834, p. 77, pi. xn, fig. 35; 



*Obs., I, 1834, p. 189, pi. xn, fig. 35. * HANLKY, Test. Moll., 1842, p. 222; 



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



* Margarita (Anodonta) blainvilleana LEA, Syn., 1836, p. 53; 1838, p. 31. 



* Anodon blainvilleana CATLOW and REEVE, Conch. Nom., 1845, p. 66. 



* Nargaron (Anodonta) blainvilleana LEA, Syn., 1852, p. 52. 



* Leila blainrilleana H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 507; III, pi. 



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



* Colnmba blainvilleana CLESSIN, Conch. Cab. Auo., 1876, p. 253, pi. i,xxxvi, figs. 



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



"Anodon parishii GRAY, Pr. Zool. Soc. Lond., 1834, p. 57.* *MOLLER, Syn. Nov. 

 Gen., 1836, p. 195. * CATLOW and REEVE, Conch. Nom., 1845, p. 67. 



* Margarita (Anodonta) parisMi LEA, Syn., 1836, p. 53; 1838, p. 31. 



* Anodonta parishii HANLEY, Test. Moll., 1842, p. 222; * Biv. Shells, 1843, p. 222. 



* P^TEL, Conch. Sam., Ill, 1890, p. 183. 

 *Margaron (Anodonta) parishii LEA, Syn., 1852. p. 52. 



'Leila parishii H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 507. 



* Anodon hians SOWERBY, Conch. Icon., XVII, 1867, pi. iv, fig. 8. 



Peru; Brazil; south to Argentina. 



f 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. 4 



* Margarita (Anodonta) esula LEA, Syn., 1838, p. 32. 

 *Margaron (Anodonta) esula LEA, Syn., 1852, p. 52. 

 *Mar(jaron (Columba) 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 pulmnata HUPE, Moll. Nouv., Ill, 1857, p. 90, pi. xx, fig. 1. 



*Columba pulvinata CLESSIN, Conch. Cab. Ano., 1876, p. 255, pi. LXXV, figs. 1, 2. 



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



* Anodon pulvinatus SOWERBY, Conch. Icon., XVII, 1867, pi. v, fig. 10. 



* Leila castelnaudi HUPE, Moll. Nouv., Ill, 1857, 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. 



* Columba caslelnaudii CLESSIN, Conch. Cab. Ano., 1876, p. 254, pi. LXXXIV, figs. 



1, 2.* PJETEL, Conch. Sam., Ill, 1890, p. 188. 



Bolivia; Brazil; Paraguay. 



1 Ann. 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 parishii before the Zoological Society on July 8 of 

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

 As I do not Icnow 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 A. parishii and Lea's 

 blainrilliana are the same. 



According to Lea. I have not seen this paper. 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. 



