CLASS GASTROPODA 
101 
Lora exarata Moller, 1842 
Index Molluscorum Gronlandiae, 12. G. O. Sars, Mollusca regionis arcticae Nor - 
vegiae; PI. 16, fig. 18, 1878. 
Testa ovato-fusiformi, clathrata; anfr. 6 justa suturam angulatis, 
longitudinaliter lineis eminentibus cinctus, transversim plicatis; spira bre- 
viore. L.4'5'". (Moller.) 
Shell ovate-fusiform, white, latticed; with six whorls angulate to the 
suture, girdled longitudinally with prominent lines, transversely plicate; 
with short spire. (Translation.) 
Type in Zoology Museum, Christiania. Type locality, Greenland. 
Range. Arctic Ocean to Monterey, California, in 581 fathoms. Cir- 
cumboreal. 
Lora tabulata Carpenter, 1865 
Plate 7, fig. 13; Plate 18, fig. 5 
Annals and Magazine of Natural History, ser. 3, 15:29. Proceedings of the United 
States National Museum, 56; PI. 14, fig. 1, 1919. 
M. testa parva, solidissima, luride rufo-fusca, marginibus spirae ex- 
curvatis; vertice nucleoso chalcedonico (eroso) ; anfr. norm, v., postice 
rectangulatim tabulatis, suturis, impressis; costis radiantibus circ. xvi., 
valdis, obtusis, circiter basim attenuatam obsoletis; costis spiralibus in 
spira iii.-iv. angustis. extantibus, supra cost. rad. nodosis; interstitiis alte 
insculptis, subquadratis; costis circa basim circiter vii., quadratim extan¬ 
tibus, interstitiis a lineis incremeti vix decussatis; canali curta, aperta; 
labro acutiore, ad angulum posticum vix sinuato; labio tenui; columella 
obsolete uniplicata. Long., 0.45 ; long spir., 0.26; lat., 0.2. (Carpenter.) 
Shell small, very solid, luridly reddish-tawny, with margins of the spire 
curved outwardly; with nuclear vertex chalcedonic (eroded) ; with whorls 
normally 6 in number, regularly tabulate in the rear with impressed 
sutures; radial ribs about 16, strong, obtuse, obsolete around the attenuate 
base; with 3 to 4 spiral costae on the spire, narrow outstanding, nodose 
above the radial costae; with interstices deeply sculptured, subquadrate; 
with about 7 ribs around the base, standing out squarely, with interstices 
scarcely decussate by the lines of growth; with canal short, open; with 
rather sharp outer lip, scarcely sinuate to the posterior angle; inner lip 
thin; columella obsoletely uniplicate. (Translation.) 
Type in United States National Museum. Type locality, Neah Bay, 
Washington. 
Range. Sitka, Alaska, to Monterey, California. 
Described as Mangilia tabulata. 
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