CLASS GASTROPODA 
123 
Type in Copenhagen. Type locality, Arctic Coast. 
Range. Bernard Harbor, Arctic coast, and eastward. 
Lora excurvata Carpenter, 1865 
Proceedings, Philadelphia Academy of Natural Sciences, 63. Proceedings of the United 
States National Museum, 56; PI. 14, fig. 5, 1919. 
B. t. B . treveylianae simili, sed alba, curtiore, marginibus spirae valde 
excurvatis; anfr. nucleosis? .... (erosis;) dein iv. normalibus, sub- 
planatis, fere rectangulatim prope suturas tabulatis; costis obtusis radi- 
antibus circiter xviii medio anfractus et prope suturam obsoletis, postice 
retrorsum valde arcuatis; sulcis spiralibus subdistantibus impressis, costas 
superantibus, in spira circiter v., postice evanidis, antice crebrioribus; aper- 
tura longiusovali, antice brevissime canaliculato, postice alte sinuato; 
labro acuto, medio valde excurvato; columella regione labii eroso. Long., 
28; long, spir., 13; lat., 15 poll. (Carpenter.) 
Bela like B. treveyliana, but white, stouter, with margins of the spire 
strongly curved out; with nuclear? .... (whorls eroded;) then 4 nor¬ 
mal subplanate almost regularly tabulate near the sutures, with about 18 
obtuse radial costae, obsolete in the middle of the whorl and near the 
suture, in the rear strongly arcuate backward; with impressed somewhat 
distant spiral furrows surpassing the costae, on the spire about 5 vanishing 
in the rear, in front more frequent; with aperture more extended oval, in 
front very briefly canaliculate, in the rear deeply sinuate; outer lip acute, 
in the middle strongly excurvate; columella excavate in the region of 
the inner lip. (Translation.) 
Type in United States National Museum? Type locality, Puget Sound. 
Range. Bristol Bay, Bering Sea, to Puget Sound. 
Lora trevelliana Turton, 1834 
Annals and Magazine of Natural History, 7 :351. G. O. Sars, Mollusca regionis arcticae 
Norvegiae; PI. 16, fig. 13, 1878. 
Testa ovato-fusiform; anfractibus 6-7 striis numerosissimis, apice 
deplanatis. 
Shell oval-fusiform with 6 or 7 volutions, very closely striate, and 
flattened at their tops. (Turton.) 
Shell somewhat thin, ovately fusiform, subventricose; whorls six, 
slightly planate above the carina; aperture nearly equally contracted above 
and below; outer lip a little insinuate below the shoulder; surface lightly 
decussated by inconspicuous longitudinal plications, evanescent below the 
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