Published in Zoologica, in 1969, in volume 53, issue 8, pages 107-122

Published in Zoologica New York, in 1969, in volume 54, pages 35-77

Published in Zoologica, in 1969, in volume 54, issue 1, pages 1-16

Published in Zoologica, in 1969, in volume 54, issue 2, pages 17-23

Published in Zoologica, in 1969, in volume 54, issue 3, pages 25-34

Published in Zoologica, in 1969, in volume 54, issue 5, pages 79-83