Published in Opuscula zoologica, in 1961, in volume 54, pages 1-3

Published in Opuscula zoologica, in 1961, in volume 55, pages 1-7

Published in Opuscula zoologica, in 1961, in volume 56, pages 1-5

Published in Opuscula zoologica, in 1961, in volume 57, pages 1-7