50,1205. SYNOPSIS OF THE NAIADES SIMPSON. 683 



p. 13, pi. LI v, fig. 738. *STABILE, Faun. Lug., 1845, p. 60. *DROUET, Mem. 

 Ac. Dijon, VII, 1882, p. 11 (reprint). *WESTERLUND, Fauu. tier Pal., II, Pt. 

 7,1890, p. 117. "P.KTEL, Conch. Sam., Ill, 1890, p. 158. *LOCARI>, Coq. do 

 Fr., 1893, p. 209. 



*Potamida sicula SWAINSON, Treatise on Mai., 1840, p. 282, fig. 58. 

 (nio siculits HANLEY, Biv. Shells, 1856, p. 383, pi. xx, fig. 19. *P.*:TEL, 

 Conch. Sam., Ill, 1890, p. 167. 



* I 'nio aradw PHILIPPI, Enum. Moll. Sic., Ill, 1844, p. 49.' KUSTER, Couch. Cab. 



Unio, 1854, p. 105, pi. xxvin, fig. 6. *KOBELT, Icon., IV, 1876, p. 62, pi. 

 cxvu, figs. 1146, 1147. *DROUET, .11. tie Conch., XXIX, 1881, p. 25. 



* Unio dactylus MORELET, Moll. Port., 1845, p. 110, pi. xiv, fig. 2. * WESTERLUND, 



Faun. Pal., II, Pt.7, 1890, p. 111.* KOBELT, Icon., new, sen, VI, 1893, p. 98, 

 pl.cxxx, fig. 1132. 



* Uniomucidus MORELET, Moll. Port., 1845, p. 111.* KOBELT, Icon., new. ser., VI, 



1893, p. 98, pi. CLXXX, figs. 1130, 1131. *P.KTEL, Conch. Sam., Ill, 1890, p. 

 160. 'WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 111. 



*U>iio qninqueannulatus KUSTER, Conch. Cab. Uuio, 1854, p. 93, pi. xxv, figs. 3, 

 4. *P.ETEL, Couch. Sam., Ill, 1890, p. 165. 



* Unio pallens KUSTER, Conch. Cab. Unio, 1854, p. 95, pi. xxv, lig. 5; xxvr, fig. 1. 

 'Unio viridijlarus KUSTER, Conch. Cab. Unio, 1854, p. 96, pi. xxvi, figs. 2, 3. 



"P.KTEL, Conch. Sam., Ill, 1890, p. 171. 



I'nio petrocichii KITSTER, Conch. Cab. Unio, 1854, p. 98, pi. xxvi, fig. 5; xxvn, 

 fig. 1. *P.ETEL, Conch. Sam., Ill, 1890, p. 163. 



* Unio maltzani KUSTER, Conch. Cab. Unio, 1854, p. 106, pi. xxix, figs. 1, 2. 



*P;ETEL, Couch. Sain., Ill, 1890, p. 158. 

 *Unio baletonicus KUSTER, Conch. Cab. Unio, 1861, p. 231, pi. LXXVIII, fig. 1. 



* SERVAIN, Hist. Mai. Bal., 1881, p. 98. 

 I'nio proechtts BOURGUIGNAT, Rev. et Mag., XIV, 1862, pi. xix, figs. 1-3; XV, 



1863, p. 19, xix. * WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 118. 

 *Unio actephilits BOURGUIGNAT, Rev. et Mag., XIV, 1862, pi. xix, figs. 7, 8, xx, 



fig. 3; XV, 1863, p. 20. 

 "I'nio lawleyanus GENTILUOMO, Bull. Mai. Ital., I, 1868, p. 54, pi. iv, figs. 1-3. 



Europe generally; Siberia east to the Lena River and perhaps 

 farther; south into Asia Minor!; Algiers'?. 



fUNIO PLATYRHYNCHUS Rossmassler. 



* Unio plat yrhynchus ROSSMASSLER, Icon., II, 1835, p. 22, pi. ix, fig. 130; V, 1837, 



p. 20, pi. xxiv, fig. 338. *PORRO, Mai. Como, 1838, p. 117. * HANLEY, 

 Test. Moll., 1842, p. 205 ; * Biv. Shells., 1843, p. 205, pi. xxm, fig. 53." CATLOW 

 and REEVE, Couch. Norn., 1845, p. 62. * KUSTEI:, Conch. Cab. Unio, 1854, 

 p. 77, pis. xix, xx. * SOWERBY, Conch. Icon., XVI, 1856, pi. xxx, fig. 154. 

 "H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 491. v P.KTEL, Conch. Sam., 

 Ill, 1890, p. 163. * WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 118. 



* Margarita ( I'nio) platyrlnjnchus LEA, Syn., 1836. p. 35; 1838, p. 24. 



* Hargaron ( Unio) platyrhynclius LEA, Syu., 1852, p. 36; 1870, p. 58. 



* ('nio fiscallianus KLECIACH, Atti. Soc. Ital., XV, 1872, p. 92. *PFEIKKER and 



KOBBLT, Mai. Blatt., XX, 1873, p. 9J, fig. 

 I'nio limosKs * KOBELT, Icon., new ser., VI, 1893, p. 44, pi. CLVII, figs. 1024-1027. ' 



Central and southwestern Europe. 



'According to Kobelt in above reference, his^Za/^rfti/Hc/ts = the limosiis of Nilsson. 

 Nilsson does not figure his species in Hist. Moll. Svec., but refers to pi. v, fig. 10, 

 in Pfeiffer's Land and Susswasser Mollusken, which is plainly a Unio piutornia. 

 Kobelt's figures, the latter three certainly, are genuine platyrhyncluis, which I 

 consider a perfectly good species. 



