Published in Bulletin of The Museum of Comparative Zoology, in 1921, in volume 64, pages 365-397

Published in Bulletin of The Museum of Comparative Zoology, in 1921, in volume 64, pages 503-525

Published in Bulletin of The Museum of Comparative Zoology Harvard, in 1921, in volume 64, pages 527-547

Published in Bulletin of The Museum of Comparative Zoology, in 1921, in volume 65, issue 1, pages 1-14