Pera henslowiana Jenyns, 1832
‘Leach’ of Authors.
Jenyns, 1832. Trans. Cambridge Phil. Soc. 4: 308.
Hanley, 1843. Illustr. Descr. Cat. Rec. Bivalve Shells: 91.
Leach, 1852. Syn. Moll. Gr. Brit.: 291 [as ‘Pera henslowiana’].
Prime, 1870. Amer. J. Conch. 5: 169.
Clessin, 1874. Conch. Cab. 9(3): 13.
Clessin, 1874. Bull. Soc. Vaud. Sci. Nat. 13: 149 [as ‘Pisidium henslowianum’].
Servain, 1882. Hist. Moll. Acéph. Francfort: 19 [as ‘Pisidium henslowianum’].
Prime, 1895. Cat. Corbiculadae: 60 [as ‘Pisidium henslowianum’].
Dall, 1903. Trans. Wagner Free Inst. 3(6): 1463.
Thiele, 1934. Handb. Syst. Weichtierk. 3: 853 [1297].
Kantor et al., 2010. Cat. Contin. Moll. Russia: 308 [as ‘Tellina henslowiana’].
(error for Tellina henslowana Sheppard, 1825)

Pisidium bartolomaeum Clessin, 1873
Clessin, 1873. Corrspbl. d. zool.-mineral. Ver. Regensburg: ??.
Clessin, 1874. Conch. Cab. 9(3): 31, pl. 3, figs. 12-14.

Pisidium fossarinum Westerlund, 1873
Clessin in Westerlund, 1873. Fauna Moll. Terr. Fluv. Suec. Norv. Dan. (2): 544.
Clessin, 1874. Conch. Cab. 9(3): 32, pl. 3, figs. 15-20.

Pisidium globulare Westerlund, 1873
Clessin in Westerlund, 1873. Fauna Moll. Terr. Fluv. Suec. Norv. Dan. (2): 532.
Clessin, 1874. Conch. Cab. 9(3): 24, pl. 2, figs. 16-18.

Pisidium heldreichi Clessin, 1874
Clessin, 1874. Conch. Cab. 9(3): 38, pl. 4, figs. 10-12.

Pisidium hispanicum Clessin, 1874
Clessin, 1874. Conch. Cab. 9(3): 37, pl. 4, figs. 4-6.

Pisidium ibericum Clessin, 1873
Clessin, 1873. Malak. Blatt. 20: 29, fig. 4.
Clessin, 1874. Conch. Cab. 9(3): 36, pl. 4, figs. 1-3.

Pisidium italicum Clessin, 1874
Clessin, 1874. Conch. Cab. 9(3): 40, pl. 4, figs. 16-18.

Pisidium moreanum Clessin, 1874
Clessin, 1874. Conch. Cab. 9(3): 38, pl. 4, figs. 7-9.

Pisidium parvulum Westerlund, 1873
Clessin in Westerlund, 1873. Fauna Moll. Terr. Fluv. Suec. Norv. Dan. (2): 553.
Clessin, 1874. Conch. Cab. 9(3): 17, pl. 1, figs. 17-21.

Pisidium rivulare Clessin, 1874
Clessin, 1874. Conch. Cab. 9(3): 30, pl. 3, figs. 7-11.
Clessin, 1877. Deutsche Excurs. Moll. Fauna: 510, fig. 331.

Pisidium scholtzii Clessin, 1873
Clessin, 1873. Malak. Blatt. 20: 23, pl. 1, fig. 1.
Clessin in Westerlund, 1873. Fauna Moll. Terr. Fluv. Suec. Norv. Dan. (2): 540.
Clessin, 1874. Conch. Cab. 9(3): 18, pl. 2, figs. 1-3.
(new name for Pisidium obtusale Scholtz, 1853)

Pisidium fossarinum var. acuminatum Clessin, 1874
Clessin, 1874. Conch. Cab. 9(3): 33.
(intro'd as intra-sp. of Pisidium fossarinum Westerlund, 1873; homonym of Pisidium acuminatum Martens, 1874)

Pisidium fossarinum var. areolatum Clessin, 1874
Clessin, 1874. Conch. Cab. 9(3): 33, pl. 3, fig. 20.
Clessin, 1877. Deutsche Excurs. Moll. Fauna: 514.
(intro'd as intra-sp. of Pisidium fossarinum Westerlund, 1873)

Pisidium fossarinum var. curtum Clessin, 1874
Clessin, 1874. Conch. Cab. 9(3): 34.
Clessin, 1877. Deutsche Excurs. Moll. Fauna: 515.
(intro'd as intra-sp. of Pisidium fossarinum Westerlund, 1873)

Pisidium fossarinum var. flavescens Clessin, 1874
Clessin, 1874. Conch. Cab. 9(3): 33, pl. 3, fig. 19.
Clessin, 1877. Deutsche Excurs. Moll. Fauna: 514.
(intro'd as intra-sp. of Pisidium fossarinum Westerlund, 1873)

Pisidium fossarinum var. modestum Clessin, 1874
Clessin, 1874. Conch. Cab. 9(3): 34, pl. 3, fig. 18.
Clessin, 1877. Deutsche Excurs. Moll. Fauna: 515.
(intro'd as intra-sp. of Pisidium fossarinum Westerlund, 1873)

Pisidium fossarinum var. obtusum Clessin, 1874
Clessin, 1874. Conch. Cab. 9(3): 33.
Clessin, 1877. Deutsche Excurs. Moll. Fauna: 514.
(intro'd as intra-sp. of Pisidium fossarinum Westerlund, 1873)

Pisidium henslowanum suecicum Westerlund, 1873
Clessin in Westerlund, 1873. Fauna Moll. Terr. Fluv. Suec. Norv. Dan. (2): 536.
Clessin, 1874. Conch. Cab. 9(3): 15.
(intro'd as intra-sp. of Tellina henslowana Sheppard, 1825)

Pisidium henslowianum [sic] var. elongatum Clessin, 1874
Clessin, 1874. Conch. Cab. 9(3): 15.
(intro'd as intra-sp. of Tellina henslowana Sheppard, 1825)

Pisidium henslowianum [sic] var. pulchrum Clessin, 1874
Clessin, 1874. Conch. Cab. 9(3): 15, pl. 1, fig. 9.
Clessin, 1877. Deutsche Excurs. Moll. Fauna: 508, fig. 329.
(intro'd as intra-sp. of Tellina henslowana Sheppard, 1825)

Pisidium henslowianum [sic] var. solidum Clessin, 1874
Clessin, 1874. Conch. Cab. 9(3): 15.
Clessin, 1877. Deutsche Excurs. Moll. Fauna: 509.
(intro'd as intra-sp. of Tellina henslowana Sheppard, 1825; homonym of Pisidium obtusale solidum Westerlund, 1873)

Pisidium milium var. alpestre Clessin, 1873
Clessin, 1873. Corrspbl. d. zool.-mineral. Ver. Regensburg: ??.
Clessin, 1874. Conch. Cab. 9(3): 21, pl. 2, fig. 16.
(intro'd as intra-sp. of Pisidium milium Held, 1836)

Pisidium obtusale magnificum Westerlund, 1873
Clessin in Westerlund, 1873. Fauna Moll. Terr. Fluv. Suec. Norv. Dan. (2): 547.
Clessin, 1874. Conch. Cab. 9(3): 27.
(intro'd as intra-sp. of Pisidium obtusale Pfeiffer, 1821)

Pisidium obtusale solidum Westerlund, 1873
Clessin in Westerlund, 1873. Fauna Moll. Terr. Fluv. Suec. Norv. Dan. (2): 548.
Clessin, 1874. Conch. Cab. 9(3): 28.
(intro'd as intra-sp. of Pisidium obtusale Pfeiffer, 1821)

Pisidium obtusale var. fragilis Westerlund, 1873
Clessin in Westerlund, 1873. Fauna Moll. Terr. Fluv. Suec. Norv. Dan. (2): 548.
Clessin, 1874. Conch. Cab. 9(3): 28.
(intro'd as intra-sp. of Cyclas obtusalis Lamarck, 1818)

Pisidium parvulum var. martensi Westerlund, 1873
Clessin in Westerlund, 1873. Fauna Moll. Terr. Fluv. Suec. Norv. Dan. (2): 533.
Clessin, 1874. Conch. Cab. 9(3): 18, pl. 20-21.
(intro'd as intra-sp. of Pisidium parvulum Westerlund, 1873)

Pisidium rivulare var. major Clessin, 1877
Clessin, 1874. Conch. Cab. 9(3): 31.
Clessin, 1877. Deutsche Excurs. Moll. Fauna: 512.
(intro'd as intra-sp. of Pisidium rivulare Clessin, 1874)

Pisidium scholtzi var. lapponicum Westerlund, 1873
Clessin in Westerlund, 1873. Fauna Moll. Terr. Fluv. Suec. Norv. Dan. (2): 540.
Clessin, 1874. Conch. Cab. 9(3): 19.
(intro'd as intra-sp. of Pisidium scholtzii Clessin, 1873)