. Elements of zoölogy. Zoology. 62 MGLLUSCA. they have no operculum. They are found in many seas, 196 living and 150 fossil species being known. Value.—In California they are eaten. In 18S0, 6,372 sacks of Al- balones, or Haliotis, valued at $46,179, were shipped from that State, and probably as many more by rail. They find a market in New York and Boston, where they are either cut or powdered and made into but- tons, etc. Violet Snails (lanthinidce).—These shells (Fig. 65, I) float upon the surface of Southern waters, and are tinted with purple and violet, the animal when pressed emitting. Fi
. Elements of zoölogy. Zoology. 62 MGLLUSCA. they have no operculum. They are found in many seas, 196 living and 150 fossil species being known. Value.—In California they are eaten. In 18S0, 6,372 sacks of Al- balones, or Haliotis, valued at $46,179, were shipped from that State, and probably as many more by rail. They find a market in New York and Boston, where they are either cut or powdered and made into but- tons, etc. Violet Snails (lanthinidce).—These shells (Fig. 65, I) float upon the surface of Southern waters, and are tinted with purple and violet, the animal when pressed emitting. Fig. 65.—I, Ianthina, the ocean-snail: /, foot; r, raft of air-bubbles, with egg-bags hanging down. C, Carinaria : /, foot; s, shell covering the breathing-gills, g. Both these forms float upside down. P, Pteropod. a rich purple indelible ink. They secrete by their foot a curious raft, composed seemingly of bubbles of air in transparent sacs. This buoys them up, and is also a nur- sery, the eggs being attached to the under portion, the entire family being at the mercy of the 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
