. West American shells; a description in familiar terms of the principal marine, fresh water and land mollusks of the United States found west of the Rocky Mountains, including those of British Columbia and Alaska ... )ecies, leaving a fuller account of theanimal to the books on zoology, merely remarkingthat the shell is secreted by the mantle. The first sliell of this great class that we are to consider is one thatvery few will ever col-lect, for it lives in theocean where the wateris very deep, from oneto two miles being re-corded by the Alba-tross at some of thestations where it wasdredged.
. West American shells; a description in familiar terms of the principal marine, fresh water and land mollusks of the United States found west of the Rocky Mountains, including those of British Columbia and Alaska ... )ecies, leaving a fuller account of theanimal to the books on zoology, merely remarkingthat the shell is secreted by the mantle. The first sliell of this great class that we are to consider is one thatvery few will ever col-lect, for it lives in theocean where the wateris very deep, from oneto two miles being re-corded by the Alba-tross at some of thestations where it wasdredged. Its name isSolernya johnsoni, Dall,which may be renderedinto English as John-sons Solemya. It is asingular shell, with fin-gers of epidermis reach-ing out nearly an inchbeyond the edge of thefirm portion. The wholeshell is about four anda half inches long. It^^-^^ !> (*) has been dredged from deep water off various parts of the coast as far north as Puget 20 WEST AMERICAN SHELLS In the descriptions of species the same orderwill be followed as that adopted for the List ofWest American Shells, near the close of thisvolume. There the classification is given in full,though the notes about each species are very of the species will not be described fully,for various reasons, most of which have been setforth at length in the Preface. But hints andsuggestions will be freely given to help all who arevery properly trying to arrange their specimensin a natural order. The next shell on our list belongs to the Nucii-lida, and is named Niicula (Acila) castrensis,Hinds, the Camp Nut-shell. It is well named,for the shell resembles a three-cornered, darkbrown nut, while its sides have sculptured mark-ings, reminding one of many steep walled it is beautifully pearly, and it has aboutseven little hinge-teeth on each side. The wholeshell is wedge-shaped, and is about as large as agood sized pea, though it sometimes grows a lit-
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectmollusks, bookyear190
