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Updated: May 20, 2025
Their main use, however, is probably to seize and to secure the female, and this in some instances, as with Gammarus, is known to be the case. Mr.
The crustacean found in the pits of mines, which is related to the sand flea, shows, according to Dr. R. Schneider, a slight degeneration of the organ of sight, which has taken place in consequence of its adaptation to the dark places, in which this variety of the Gammarus pulex is found, which can make no use of eyes, while the sand flea possesses them fully developed.
In cases where segments are amalgamated together, such as the last two segments of the thorax in Dulichia, the last abdominal segments and the tail in Gammarus ambulans and Corophium dentatum, n. sp., and the last abdominal segments and the tail in Brachyscelus,* or where one or more segments are deficient, as in Dulichia and the Caprellae, we find the same fusion and the same deficiencies in young animals taken out of the brood-pouch of their mother.
Gammarus, use of the chelae of. Gammarus marinus. Gannets, white only when mature. Ganoid fishes. Gaour, horns of the. Gap between man and the apes. Gaper, sexes and young of. Gardner, on an example of rationality in a Gelasimus. Garrulus glandarius. Gartner, on sterility of hybrid plants. Gasteropoda, pulmoniferous, courtship of. Gasterosteus, nidification of. Gasterosteus leiurus.
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