. Elements of zoölogy. Zoology. Fig. 91.—Brine-shrimps, a, Branchi- pus stagnalis. &, Arternia salina whose form depends upon the salt- ness of the water. Fig. 92. —Fresh - water crustacean, with bi- valve shell, e, eye. of the animal. They multiply by budding and by eggs. The Estheria (Fig. 92) secretes a bivalve shell, microscopic rings upon it indicating the various moults, the cast - off coat being ce- mented to the new shell which forms beneath. Si- da and Daphnia are called water-fleas from their ac- tivity. The latter carries its eggs upon its back. The apus (Fig. 93) is an interest
. Elements of zoölogy. Zoology. Fig. 91.—Brine-shrimps, a, Branchi- pus stagnalis. &, Arternia salina whose form depends upon the salt- ness of the water. Fig. 92. —Fresh - water crustacean, with bi- valve shell, e, eye. of the animal. They multiply by budding and by eggs. The Estheria (Fig. 92) secretes a bivalve shell, microscopic rings upon it indicating the various moults, the cast - off coat being ce- mented to the new shell which forms beneath. Si- da and Daphnia are called water-fleas from their ac- tivity. The latter carries its eggs upon its back. The apus (Fig. 93) is an interesting form, having forty-seven segments and as many as sixty pairs of limbs. They withstand remarkable extremes of heat and cold, the eggs hatching in snow-water after being frozen for two weeks. The Nebalia, repre- senting Order IV, Phyllocardia, has leaf-like feet, and. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Holder, Charles Frederick, 1851-1915; Holder, Joseph Bassett, 1824-1888, joint author. New York : D. Appleton and company
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectzoology, bookyear1884
