Amer. Natural., xxvii. 1893, p. 1018.
Amer. Natural., xxxii. 1898, p. 256.
Zeitschr. wiss. Zool. viii. 1857, p. 326.
Phil. Trans. 186 B, 1896, No. 15.
Natural Science, viii. 1896, p. 94.
Amer. Natural., xxvii. 1893, p. 1018.
Amer. Natural., xxxii. 1898, p. 256.
Zeitschr. wiss. Zool. viii. 1857, p. 326.
Phil. Trans. 186 B, 1896, No. 15.
Natural Science, viii. 1896, p. 94.