Bythinia almerai Almera, 1894 † accepted as Bithynia almerai Almera, 1894 † (original description)
Cardium carinatum var. densecostata Almera & Bofill y Poch, 1894 † (original description)
Cardium carinatum var. filicostata Almera & Bofill y Poch, 1894 † (original description)
Cardium carinatum var. magnocardo Almera & Bofill y Poch, 1894 † (original description)
Cardium carinatum var. minor Almera & Bofill y Poch, 1894 † (original description)
Cardium chiae Almera, 1894 † accepted as Pontalmyra incerta chiae (Almera, 1894) † (original description)
Cardium edesma Almera & Bofill y Poch, 1894 † accepted as Euxinicardium edesma (Almera & Bofill y Poch, 1894) † (original description)
Cardium edule var. carinulatum Almera & Bofill y Poch, 1894 † (original description)
Cardium edule var. papiolensis Almera & Bofill y Poch, 1894 † (original description)
Cardium laevicosta Almera & Bofill y Poch, 1894 † (original description)
Cardium partschi var. castrensis Almera & Bofill y Poch, 1894 † accepted as Pontalmyra partschi castrensis (Almera & Bofill y Poch, 1894) † (original description)
Cardium partschi var. subrostrata Almera & Bofill y Poch, 1894 † accepted as Pontalmyra partschi subrostrata (Almera & Bofill y Poch, 1894) † (original description)
Cardium partschi var. subrostrata transversa Almera & Bofill y Poch, 1894 † (original description)
Cardium praetenue var. catalaunica Almera & Bofill y Poch, 1894 † accepted as Euxinicardium praetenue catalaunica (Almera & Bofill y Poch, 1894) † (original description)
Cardium rubricati Almera & Bofill y Poch, 1894 † (original description)
Cardium speluncense Almera & Bofill y Poch, 1894 † (original description)
Cardium spondylopsis Almera & Bofill y Poch, 1894 † accepted as Didacna spondylopsis (Almera & Bofill y Poch, 1894) † (original description)
Cardium subtenue Almera & Bofill y Poch, 1894 † accepted as Euxinicardium subtenue (Almera & Bofill y Poch, 1894) † (original description)
Cardium subtenue var. integricosta Almera & Bofill y Poch, 1894 † (original description)
Dreissensia auricularis var. minor Almera & Bofill y Poch, 1894 † (original description)
Dreissensia dubia var. rubricatica Almera & Bofill y Poch, 1894 † accepted as Dreissena dubia rubricata Almera & Bofill y Poch, 1894 † (original description)
Dreissensia dubia var. trigonula Almera & Bofill y Poch, 1894 † accepted as Dreissena dubia trigonula Almera & Bofill y Poch, 1894 † (original description)
Dreissensia rostriformis var. papiolensis Almera & Bofill y Poch, 1894 † accepted as Dreissena rostriformis (Deshayes, 1838) † (original description)
Dreissensia simplex var. catalaunica Almera & Bofill y Poch, 1894 † (original description)
Dreissensia subdubia Almera & Bofill y Poch, 1894 † (original description)
Dreissensia subsimplex Almera & Bofill y Poch, 1894 † (original description)
Dreissensia unguiformis Almera & Bofill y Poch, 1894 † (original description)
Hydrobia (Saccoia) Brusina, 1893 † accepted as Saccoia Brusina, 1893 † (basis of record)
Hydrobia (Saccoia) praeescoffierae Almera, 1894 † accepted as Saccoia praeescoffierae (Almera, 1894) † (original description)
Melania (Striatella) Brot, 1870 accepted as Melanoides Olivier, 1804 (basis of record)
Melania (Striatella) castrepiscopalensis Almera, 1894 † accepted as Melanoides (Melanoides) castrepiscopalensis (Almera, 1894) † accepted as Melanoides castrepiscopalensis (Almera, 1894) † (original description)
Neritina (Neritodonta) micans Gaudry & P. Fischer, 1867 † accepted as Theodoxus (Neritaea) micans (Gaudry & P. Fischer, 1867) † represented as Theodoxus micans (Gaudry & P. Fischer, 1867) † (basis of record)
Neritina (Neritodonta) micans var. rubricati Almera, 1894 † accepted as Theodoxus (Calvertia) micans rubricatus (Almera, 1894) † accepted as Theodoxus micans rubricati (Almera, 1894) † (original description)
Neritina deperdita Almera, 1894 † accepted as Theodoxus (Theodoxus) deperditus (Almera, 1894) † represented as Theodoxus deperditus (Almera, 1894) † (original description)
Neritina deperdita var. coangustata Almera, 1894 † accepted as Theodoxus (Theodoxus) deperditus coangustatus (Almera, 1894) † represented as Theodoxus deperditus coangustatus (Almera, 1894) † (original description)
Neritina deperdita var. emporitana Almera, 1894 † accepted as Theodoxus (Theodoxus) deperditus emporitanus (Almera, 1894) † represented as Theodoxus deperditus emporitanus (Almera, 1894) † (original description)
Ophicardelus globulosus Almera, 1894 † (original description)
Unio papiolensis Almera & Bofill y Poch, 1894 † (original description)
Valvata almerai Almera, 1894 † (original description)