. West coast shells. A familiar description of the marine, fresh water, and land mollusks of United States, found west of the Rocky Mountains ... j6 SLIPPER-SHELLS. that of the next species, Crepidula rugosa, Nutt.,ru-go-sa. The surface is somewhat roughened andshaggy, and the apex is on the very edge of the color of the outside is light brown, sometimesmarked with narrow stripes, while the inside is darkbrown, except the deck, which is white. The lengthis sometimes more than an inch. Crepidula navicelloides, Nutt, nav-i-sel-loi-des, isthe White Slipper-shell, and is shown inFig. 61.
. West coast shells. A familiar description of the marine, fresh water, and land mollusks of United States, found west of the Rocky Mountains ... j6 SLIPPER-SHELLS. that of the next species, Crepidula rugosa, Nutt.,ru-go-sa. The surface is somewhat roughened andshaggy, and the apex is on the very edge of the color of the outside is light brown, sometimesmarked with narrow stripes, while the inside is darkbrown, except the deck, which is white. The lengthis sometimes more than an inch. Crepidula navicelloides, Nutt, nav-i-sel-loi-des, isthe White Slipper-shell, and is shown inFig. 61. This species has a pure whiteshell, and may easily be recognized by itscolor, its flattened shape, and by the verythin and delicate deck, which is shown inthe engraving. Sometimes this mollusk makes hisFig- 61. home upon the rock, and the back of hisshell becomes rough and discolored; again, live spec-imens may be found within the aperture of a deadspiral shell, and then the Crepidula is smooth, curved,elongated, and almost transparent. The commonlength is less than an inch. A small species of this extensive genus is namedCrepidula dorsat
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectmollusks, bookyear188
