. Goldfish breeds and other aquarium fishes, their care and propagation; a guide to freshwater and marine aquaria, their fauna, flora and management. Aquariums; Goldfish. FIG. 163. Niagara Snail, Lymmea stagnalis., deep and the ap- erture oval. The body is yellowish- grey with a green- ish tinge, spotted with brown- and the tentacles flat, triangular and have a backward trend. It is ovi- parous and the 70 to 150 eggs, deposited at in- tervals in cylindrical capsules, hatch in 15 to 20 days. This is one of the most handsome snails, of which a pair or two may be kept in the aquarium without dama
. Goldfish breeds and other aquarium fishes, their care and propagation; a guide to freshwater and marine aquaria, their fauna, flora and management. Aquariums; Goldfish. FIG. 163. Niagara Snail, Lymmea stagnalis., deep and the ap- erture oval. The body is yellowish- grey with a green- ish tinge, spotted with brown- and the tentacles flat, triangular and have a backward trend. It is ovi- parous and the 70 to 150 eggs, deposited at in- tervals in cylindrical capsules, hatch in 15 to 20 days. This is one of the most handsome snails, of which a pair or two may be kept in the aquarium without damage to the plants. Its range is over the entire northern latitudes, and in the United States is found from Vermont through the Northern tier of States to the Pacific Ocean. It is popularly known as the "Niagara ; L. palustris, Â¥\g. 164, is a destructive though interesting common snail found in nearly all ditches, ponds and streams in the Eastern Atlantic slope and in Europe. The conical shell is ^ to 154^ inches long, of a light horn-color on the body whorl and usually a dark horn-color, brown or black above. It has five or six whorls sep- arated by white lines, with the body whorl half as long as the shell. The ovate aperture is "«⢠â ^4- Lymnaa paiuuru. nearly as long as the body whorl and the suture is deeply depressed. The body is dark gray or nearly black, with a violet tint, faintly spotted with yellow and black, and the tentacles flat and conical. It ranges from New England through Pennsylvania and south. Its habit of coming above the water serves as an identification in the aquarium, into which it is sometimes introduced with aquatic plants. The 60 to 80 eggs are deposited in a cylindrical capsule and hatch in 12 to 20 days. L. columella. Fig. 165, has an ovate thin and fragile ^ to %; inch long shell of four whorls crossed by minute lines of growth. The suture is deeply im- pressed and conspicuous, the spire narrow and the aperture larger
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectaquariu, bookyear1908
