. Narrative of a voyage to the Polar Sea during 1875-6 in ships ' Alert' and 'Discovery' [microform]. Alert (Ship); Discovery (Ship); Alerte (Navire); Discovery (Navire); Natural history; Sciences naturelles. ^ 232 ArrKNDIX. Xn. V. il/'/ffc truncdJd, Linn. 7/(f/^ T)iscov(My Bay, a and 2.) fins. {Hart and Fc'iblen) ; I)o})))in I^ay, 30 fms. (Ifdii). All the spet'inuais from those localities have tlie posterior niaroinal slopes directed inwards or towards the base of the shell, whicli peculiarity is characteristic of the variety ud- <lev(tlentiis. One shell is remarkable on account of th
. Narrative of a voyage to the Polar Sea during 1875-6 in ships ' Alert' and 'Discovery' [microform]. Alert (Ship); Discovery (Ship); Alerte (Navire); Discovery (Navire); Natural history; Sciences naturelles. ^ 232 ArrKNDIX. Xn. V. il/'/ffc truncdJd, Linn. 7/(f/^ T)iscov(My Bay, a and 2.) fins. {Hart and Fc'iblen) ; I)o})))in I^ay, 30 fms. (Ifdii). All the spet'inuais from those localities have tlie posterior niaroinal slopes directed inwards or towards the base of the shell, whicli peculiarity is characteristic of the variety ud- <lev(tlentiis. One shell is remarkable on account of the abruptness of the truncation and its narrowness, the width being only (! milliras. more than the length (30 millims.). S;u:lcava arctica., Linn. If((h. Discovery Bay, o fms. (Feihlen); Franklin Pierce Bay iHiirf and Fe'ddcn); Dol)bin I?ay, 30 fms. {Hart). Some specimens from Franklin Pierce Bay are remarkable on account of tluMr great solidity, the depth and distinctness of the muscular scars, and the purplish brown colour which stains l)otli tlie inside and exterior of the valves. i; If' i'! fe i; Modiolaria hvvUjatu, Cxvn.\. Hah. Franklin Pierce Hay, 15 fms. [FeUden and Hart). Til is species is considered by some authors a variety of the British M. discors. I'here are, however, certain diflf'erences in form, colour, and sculpture which appear to me sufficient to distinguish the two species. The present is a larger species, transversely more elongate and ])roportionally nar- rower, the dift'erence in width of the anterior and posterior ends being less marked. The striae on the hinder area, in adtdt specimens, are distinct only towards the umbones, and gradually ])ecome obsolete towards the margin of the valves, which, on this account, an^ smooth and not denticulated within as in discord. The epidermis o( lavlf/ata is brown on llie greater portion of the shell, becoming pale olive or brownish green towards the umbones. t 4. Please note that these images are extracted from sca
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Keywords: ., bookcentury1800, bookdecade1870, books, booksubjectnaturalhistory
