NO. 1205. SYNOPSIS OF THE 2\^ArADES— SIMPSON. 841 



(Group of Parreysia corrugata.) 



Shell having the middle of the basal region swollen, beak sculpture 

 strong, the central ridges generally united at their lower points to form 

 chevron- shaped markings. 



t PARREYSIA CORRUGATA Muller. 



* Mya corrugata Muller,' Verm. Terr, et Fluv., 1774, Pt. 2, p. 214; * Bescli. Ges, 



Nat. Ber.,IV, 1779, p. 56, pi. iii&, flgs. 7, 8.— *Gmelin," Sys. Nat., 13th ed., 

 1788, p. 3221.—^ SCHROTEU, Fluss, Conch., 1779, p. 181 , pi. ix, fig. 3.—*^ Wood, 

 Gen.Couch., 1, 1815, p. 108, pi. xxiv, figs. 1-3.— "DiLLWYx,Cat., 1, 1817, p. 52.— 

 Mawe, Linu. Conch., 1823, pi. iv, fig. 3.—^ Wood, Ind. Test., 1825, p. 12, pi. ii, 

 fig. 31a; 1856, rev. ed., p. 16, pi. ii, fig. 31. 



* Unio corrugata Lamarck,^' An. sans Yert., VI, 1819, p. 78. — * Dksiiayes, Enc. 



Meth., II, 1827, p. 584, pi. ccxlviii, fig. 8. 

 "Unio {Potamida) corrugata Swainson, Tr. on Mai., 1840, p. 268, fig. 51; p. 281, 

 fig. 57. 



* Unio corrugata Eetzius, Diss. Hist. Nat., 1778, p. 18.—" Spengler, Skriv. Selsk. 



Nat., Ill, 1793, p. 68.—* Hanley, Test. Moll., 1842, p. 197; 'Biv. Shells, 1843,p. 

 197. — * Catlow and Eeeve, Conch. Nora., 1845, p. 57. — * H. and A. Adams, 

 Gen. Rec. Moll., II, 1857, pp. 493, 497.— * Kuster, Conch. Cab. Unio, 1862, 

 p. 289, pi. xcvii, figs. 3, 4.— * Blanford, Jl. As. Soc. Beng., XXXV, 1867, 

 p. 136. — *SowERBY, Conch. Icon., XVI, 1868, pi. lxxi, fig. 360. —"^ Hanley 

 and Theobald, Conch. Ind., 1876, p. 21, pl.XLV, figs. 2-5. — *Pji;TEL, Conch. 

 Sam., Ill, 1890, p. 149. 

 ■^Margarita ( Unio) corrugatus Lea, Sjn., 1836, p. 29; 1838, p. 21. 



* Margaron ( Unio) corrugatus Lea, Syn., 1852, p. 20; 1870, p. 30. 



* ilf]/a sjjitmt Gmelin, Syst. Nat., 13th ed., 1788, p. 3222; "^Wood, Gen. Conch., I, 



1815, p. 110.— * Lamarck, An. sans Vert., VI, 1819, p. 80. 

 Mya gaditana Schrkibers, Versuch., 1793, p. 



* Unio multidentatus Philippi,^ Conch., Ill, 1847, p. 46, pi. in, fig. 4. — *Kuster, 



Conch. Cab. Unio., 1856, p. 136, pi. xxxvi, fig. 5.— "P.etel, Conch. Sam., Ill, 

 1890, p. 160. 

 ^ Mar gar on ( Unio) multidentatus Lea, Syn., 1870, p. 50. 



* Unio fidmineusVmiAVFi,^ Conch., Ill, 1847, p. 46, pi. in, figs. 5, 6.— *Kuster, 



Conch. Cab. Unio., 1862, p. 286, pi. xcvi, figs. 2, 3. — ^P.etel, Conch. Sam., Ill, 

 1890, p. 153. 



* Unio lutens Lea,6 Pr. Ac. Nat. Sci. Phila., VIII, 1856, p. 93. 



"Unio hiteusl.-E\, Jl. Ac. N. Sci. Phila., Ill, 1857, p. 291., pi. xxiv, fig. 4; *Obs., 

 VI, 1857, p. 11, pi. XXIV, fig. 4. 



•Mnller's description oi Mya corrugata is inadequate, but in the Beschaftigungen 

 it is further discussed and characteristic figures are given of the species we know 

 as Unio corrugatus of India. 



^Eefers to Conch. Cab. VI, pi. in, fig. 22, which is probably Miiller's shell. 

 Chemnitz refers to it as Mya corrugata teste ovali, etc. The shell referred to bj' him 

 in Conch. Cab., X, p. 346, as Mya corrugata magna, etc., is a very different thing. 



•'Lamarck refers to Enc. Meth. Pt. 19, 1797, pi. ccxlviii, figs. 6, 8 a, h. 1 am not 

 at all sure that fig. 6 is the corrugatus of Miiller. 



''Credited by Philippi to Parreyss. I think there can be no doubt that this is the 

 Mya corrugata of Miiller, as the figure and description entirely asjree with the species 

 as we know it. 



sParreyss is the author, according to Philippi. This and multidentatus are credited 

 by Philippi to Australia. No shells like these have ever been found there. 



^Lutens in text, by error no doubt. 



