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Updated: May 14, 2025
Fraser, in 'Proc. Zoolog. Soc. 1869, p. 3. I am indebted to Mr. Bate for Dr. From M. Bert's observations on Daphnia, when placed in a vessel illuminated by a prism, we have reason to believe that even the lowest crustaceans can distinguish colours. I am informed by Fritz Muller, that in the female of a Brazilian species of Gelasimus, the whole body is of a nearly uniform greyish-brown.
Gegenbaur, C., on the number of digits in the Ichthyopterygia; on the hermaphroditism of the remote progenitors of the vertebrata; two types of nipple in mammals. Gelasimus, proportions of the sexes in a species of; use of the enlarged chelae of the male; pugnacity of males of; rational actions of a; difference of colour in the sexes of a species of. Gemmules, dormant in one sex.
Bate fighting with a Carcinus maenas, the latter was soon thrown on its back, and had every limb torn from its body. When several males of a Brazilian Gelasimus, a species furnished with immense pincers, were placed together in a glass vessel by Fritz Muller, they mutilated and killed one another. Mr.
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