. The sea-beach at ebb-tide : a guide to the study of the seaweeds and the lower animal life found between tidemarks . En directtu sim\\ JNL; i\ti-]iiii-ii niiiiiiiii: I, foot; 2, siphons; 3, paplUtB, enlarged good way to catch out- is to approach his burrow carefully,and then plunge a spade obliquely down below him, thereby 458 MARINE INVERTEBRATES. cutting off his retreat. So tenaciously will they cling to the sandby expanding the muscular foot that the shell may be pulled en-tirely off the body before they will let go. GENUS Ensis E. directus (Solen ensis, Ensis americanus). The common spec
. The sea-beach at ebb-tide : a guide to the study of the seaweeds and the lower animal life found between tidemarks . En directtu sim\\ JNL; i\ti-]iiii-ii niiiiiiiii: I, foot; 2, siphons; 3, paplUtB, enlarged good way to catch out- is to approach his burrow carefully,and then plunge a spade obliquely down below him, thereby 458 MARINE INVERTEBRATES. cutting off his retreat. So tenaciously will they cling to the sandby expanding the muscular foot that the shell may be pulled en-tirely off the body before they will let go. GENUS Ensis E. directus (Solen ensis, Ensis americanus). The common species upon the New England andJersey coasts. The foot is long1, and protrudes fromone end of the long shell; it is also very strong,and capable of change at will into almost any form,from a pointed bulb to a flat disk. The siphons,which project from the opposite end of the shell,are short and are not united. The gills are juxtaposition of these organs is at first con-fusing, because the greatly elongated form of theshell and the habits of the animal in burrowingvertically into the sand have caused the foot to bepushed farther away from the posterior portion ofthe shell and to protrude in a direction just oppositeto the siphons. The shells are bent or slightlycurved; they gape at both ends; and they arefitted with very small interlockin
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectmarinea, bookyear1901
