. West coast shells. A familiar description of the marine, fresh water, and land mollusks of United States, found west of the Rocky Mountains ... Fig. 169. creamy-white color, and is marked with fine concen-tric lines. The posterior end of the shell is narrowand somewhat bent to one side. The ligament isexternal, the hinge teeth very small, and the pallialsinus very long and narrow. Old specimens show amarked tendency to thicken the shell from the is found at points along the whole coast, butchiefly to the northward. 198 THE RED-LINED CLAM. Sangiiinolaria Nuttalli, Conr., San-guin-o-
. West coast shells. A familiar description of the marine, fresh water, and land mollusks of United States, found west of the Rocky Mountains ... Fig. 169. creamy-white color, and is marked with fine concen-tric lines. The posterior end of the shell is narrowand somewhat bent to one side. The ligament isexternal, the hinge teeth very small, and the pallialsinus very long and narrow. Old specimens show amarked tendency to thicken the shell from the is found at points along the whole coast, butchiefly to the northward. 198 THE RED-LINED CLAM. Sangiiinolaria Nuttalli, Conr., San-guin-o-la-ri-aNut-tall-i. Shell thin, oval, flat on the right side,but bulged on the left. Ligament large and external,hinge-teeth small, sinus very large and acute. Thecolor of this beautiful shell is white and lilac, some-what rayed, but the coloring is partly concealed by abrown epidermis. It is a southern shell, two inchesor more in length. While returning one morning from a ramble overthe rocks which had been left bare by the fall of the. Fig 170. tide, I was much surprised to see what seemed to betwo white worms moving about in a little hollowbetween two mossy rocks, which was filled with sandand water. They were round and long, and aboutthe size of a lead pencil. As soon as I disturbedthem a little, they quickly disappeared beneath thesurface of the wet sand. Suspecting what thesesingular creatures might belong to, I at once beganto dig, and soon came upon a fine sand-clam, with ashell like that shown in Fig. 170. I was exceed-ingly glad to make the acquaintance of a real, live HOW HE BEHAVED. 199 Psdmmobia nibro-radiata, Nutt., for so I had learnedto call him. I think his long name should be pro-nounced Sam-mo-bi-a ru-bro-ra-di-a-ta, and it meansthat he lives in the sand and has red rays on hisshell. Well, when I came to him down in his bed ofsand, the two white tubes had vanished, and therewas nothing visible except an oval shell, the valvesof which were some three inches lon
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectmollusks, bookyear188
