UN NUEVO Y SIGNIFICATIVO CASO DE ADICION PRISMATICA OBSERVADO EN EL PREMOLAR CUARTO (p4) INFERIOR DE UN EJEMPLAR DEL GENERO CAVIA (RODENTIA, CAVIIDAE)

Juan A. Pisano

Abstract


In the present paper the author describes a new case of prismatic addition observed in the lower p4 of Cavia. The specimen was collected in the debris of an indi- genous site in Baradero, Buenos Aires Province. Comparisons are made with other living genera of the group (e. gr., Kerodon, Galea and Microcavia). The general plan of variation of the p prisms in Caviinae as discussed by R. Pascual (1962) is here ratified.

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