Dos nuevas especies del género Alvania (Caenogastropoda: Rissoidae) de las islas Baleares

Two new species of the genus Alvania from the Balearic Sea are described based on shell characters. The shell of one of them, A. balearica spec. nov., resembles that of A. subcrenulata and A. nestaresi, but it differs in the more turriculate outline and in some characters of the sculpture of the protoconch and teleoconch. The second one, A. josefoi spec. nov., is compared to the closely related Alvania scabra and A. sculptilis. It differs in being smaller, in the colour pattern of the shell and in some characters of the sculpture of the protoconch and teleoconch. Both species are very uniform in conchological characteristics