892 PROCEEDINGS OF THE NATIONAL MUSEUM. 



fDIPLODON CULTELLIFORMIS Conrad.' 



"lUnio depressa Lamarck, An. sans. Vert., VII, 1819, p. 79. — *?Delessert, 



Rec. Coq. Lam., 1841, pi. xii, fig. 5.— *Chenu, 111. Conch., 1858, pi. xii, 



figs. 4, 4a. 

 *Unto depressns Hanley, Test. Moll., 1842, p. 200; *^ Biv. Shells, 1843, p. 200.— 



*Catlow and Eeeve, Conch. Norn., 1845, p. 58.— ' Conrad, Jl. Ac. N. Sci. 



Phila., 1854, p. 295, pi. xxxvi, fig. 2.— * H. and A. Adams, Gen. Rec. Moll., 



II, 1857, p. 493.— * PiETEL, Conch. Sam., Ill, 1890, p. 150. 

 *Unio cultelUformis Conrad, Pr. Ac. N. Sci. Phila., V, 1850, p. 10.— *II. and A. 



Adams, Gen. Rec. Moll., II, 1857, p. 493.— * P^etel, Conch. Sam., Ill, 1890, 



p. 149. 

 *Margaron {Unio) cultelUformis Lea, Syn., 1852, p. 32; 1870, p. 52. 

 *t Unio paramatensis Lea, Pr. Ac. N. Sci. Phila., VI, 1862, p. 176; " Jl. Ac. N. Sci. 



Phila.,VI, 1866, p. 60, pi. xx, fig. 59 ; * Ohs., XI, 1867, p. 64, pi. xx, fig. 59. 

 *Margaron ( Unio) paramattensis Lea, Syn., 1870, p. 35. 



Australia. 



tDIPLODON LUTULENTUS Gould. 



*Unio lutulentus Gould, Pr. Bost. Soc. N. Hist., Ill, 1850, p. 295; *U. S. Expl. 



Exp., XII, 1852, p. 428, figs. 542, 542a., 5426, 542c.—* H. and A. Adams, Gen. Rec. 



Moll., II, 18.57, p. 493.— * Gould, Otia Conch., 1862, p. 88.— * Reeve, Conch. 



Icon., XVI, 1865, pi. xxv, fig. 122.— *Hutton, N. Z. Moll., 1880, p. 161.— 



*P^ETEL, Conch. Sam., Ill, 1890, p. 158. 

 *Margaron ( U7iio) lutulentus Lea, Syn., 1852, p. 32; 1870, p. 52. 



New Zealand. 



tDIPLODON WILSONII Lea. 



* Unio icilsonii Lea, Pr. Ac. N. Sci. Phila., 1859, p. 153; * Jl. Ac. N. Sci. Phila., IV, 



1860, p. 257, pi. XL, tig. 137; *Obs., VII, p. 74, pL XL, fig. 137.— *Sowerby, 

 Conch. Icon., XVI, 1868, pi. Lxxxviii, fig. 474.— *P^tel, Conch. Sam., Ill, 

 1890, p. 172. 



*Ma7-garon ( Unio) wilsonii Lea, Syn., 1870, p. 47. 



*\Unio {Alasmodon) stnarti Adams and Angas, Pr. Zool. Soc. Lond., 1863, p. 417.^ 



* Unio stuarti Sowerky, Conch. Icon., XVI, 1866, pi. Liv, fig. 279. 



* Anodon stuarti Sowerby, Conch. Icon., XVII, 1867, pi. xxxiv, figs. 136, 136a, 



136&. 



* Mar gar on ( Unio) stuarti Lea, Syn., 1870, p. 52. 



* Mar gar it an a stuarti P^etel, Conch. Sam., Ill, 1890, p. 174. 

 '* Anodonta stuarti P^etkl, Conch. Sam., Ill, 1890, p. 185. 



Australia. 



tDIPLODON EVANSI Adams and Angas. 



- * Unio {Alasmodon) evansi Adams and Angas, Pr. Zool. Soc. Lond., 1864, p. 39. 



* Unio evansi Sowerby, Conch. Icon., XVI, 1867, pi. lvi, fig. 285. — * P^tel, Conch. I 



Sam., Ill, 1890, p. 152. 



1 1 can not identify Lamarck's Unio depressus with any certainty from his very 

 meager description. Lea believed it to equal the form I have considered as australis, 

 but Lamarck's description seems to apply to a more elongated species. Delessert's 

 figure in 1841 probably equals Lea's paramattensis. As the name depressus was used 

 for a Unio iu 1801 by Donovan I am obliged to use another for this. 



^A specimen of this in the Lea collection from the Stuart expedition is identical 

 with Lea's species. 



