10 CATALOGUE OF 



IV. DESCRIPTIONS OF THE SPECIES RECOGNIZED. 



1. Pisidium amnicum (Miiller). 



[Pis. I, f. 1; III, f. 1 ; V-IX.] 



1774. Tellina amirica : Miiller, Verm, Hist, ii, p. 205. 



1797. Tellina rivalis : Maton, Trans. Linn. Soc. iii, p. 44, pi. xiii, f. 37, 



38. 



1801. Cydaspalustris: Draparnaud, Tabl. Moll. p. 106. 

 1803. Car ditim amnicum, Miill. : Montagu, Test. Brit. p. 86. 

 1813? Cyclas amnica, Miill. : Fleming, Ediub. Encyclop. vii, p. 92. 

 1818. (Jyclas obliqua [n. sp.] : Lamarck, Anim. sans Vert, v, p. 559. 

 1821. Pisidium obliquum, Lam.: 0. Pfeiffer, Naturg. Deutsch. Moll, i, 



p. 124, pi. v, f. 19, 20. 

 1832. Pisidinm amnicum, Miill. : Jenvns, Trans. Camb. Phil. Soc. iv, 



p. 309, pi. xix, f. 2. 

 1838. Pisidium injlatum: Megerle in Porro, Malac. Comasca, p. 121, 



pi. ii, f. 13 : cites : "Syn. Ci/clas pfeifferi, Zeigler (sec. Stenz.)." 

 1849. Pisidium amnicum, Jemns : Gassies, Tabl. Moll. Agenais, p. 208. 

 1852. Pera henslowlana : Leach, Moll. Brit. Synop. p. 291. 



- Cordula amnica : id., op. cit. p. 293. 



1854. Pimm amnicum, Miill. : Deshayes, Cat. Conch. Brit. Mus. ii 



p. 274. 



1855. Pisidium intermedium, nob. : Gassies, Actes Soc. Linn. Bordeaux, 



xx, p. 338, pi. i, f. 4. (Cf. id., Journ. de Conch, v, 1856, 



p. 143.) 

 1858. Musculium amnicum, Miill.: Adams, Gen. Rec. Moll, ii, p., 451 . 



(Pisum amnicum, id., op. cit. p. 060.) 

 1879? Pisidium alienum, n. sp. ; Clessin in Kiister, Syst. Conch.-Cab. 



ix, Abth. 3, Cycladeen, p. 269, pi. xli, f. 3-5. 

 18SO. Pi.sidium amnicum, var. nova [n. v.]: Paulucci, Bull. Soc. Malac. 



Ital. vi, p. 176. 



1887. Pisidium elmgatum (olim amnicum, var, elongata, Baud.) : Servain, 



Bull. Soc. Malac. France, iv, p. 252. 



1888. Pisiditim danubiale (Bourg. in coll.): Servain, Bull. Soc. Malac. 



France, v, p. 313. 



1 893. Pisidium depressum \ n. spp. : Locard, Coquil. Eaux donees 

 Pisidium tnwsversum \ France, p. 1 40. 



1902. Pisidium baicalense, n. sp. : Dybowski, Nachrichtsbl. Deutsch. 



Malakoz. Gesell. xxxiv, p. 93; Rossmassler, Icon., N. F. x, 

 f. 1814. 



1903. Corneocyclas (Pisidiuni) amnica, Miill. : Dall, Proc. Biol. Soc. 



Washington, xvi, p. 7. 



1909. Pisidium subtilestriatum, n. sp. [=var. nova, Paul.] : Lindholm 

 in KorotnefF, Wissensch. Ergebn. Zool. Exped. Baikal-See, iv, 

 p. 84, pi. ii. 



Fortunately there is no doubt about the identity of this species, 

 which was first described as British by Dr. Maton in 1797. 



