I \< I 



I., i MI MK9 M \. < Sftfp, IM. 50 7 I. 



Small, .'Mi-rally with :i mlnn-d kn-l. th 



broken up into dot-. L. irjili. I mill. 



Y:ir. \\ i; \M I \. \. ( ';irp. 



( )raiiL:e-white. the hand :unl 



Section M I:IM>I:I \ Lead I, < ir:i\ . 1M1. 



I.. CRAS8IOB, Ml-'. IM. .",(), tiir. 7(i. 



Stout, solid, o|)a<|in\ i'pid(M-nii> li^lit yrllowisli ; \vlnrl> 

 n little tumid or rouud-slioul<lcrcd al)o\c. c|)idcnni.- thin, oM-n 

 -atlicn'd into ol)li(|in-Iy longitudinal folds, under it tin- .-urt';i 



minutely spirally striatr; j)ill;n- lip flattened, expanded; impel 



ate. Length, \'2'~> mill. 



Northern I'jii-<>i>i, Greenland, Sitka. 



/,. t/[in'i'ii/ft(, Moller, and L. jxi//i<l<i, Donovan, ai'e >vimii\ 



Section HALOCONCHA, Dull. l v 



L. KI:KI,K\A, Dull. IM. :>\, %. so. 



Thin, lityht to dark chestnul hrown, nearlv smooth ; wlmrl> 'J-j-.'J, 

 rapidly inereasinn, the last somewhat slantinu'lv Hattened above, 

 inflated, suture distinct, umbilicus narrow. 



Length, 10, diam. 1.'J-S mill. 



A/rnt!nn ninl ('oiiiiiKiii<l> / />.. Alaska. 



L. ANTAI;< TI< \. Marten>. IM. ol, fi-s. ,S1, *'2 ; IM. 4<i. ti- 84 



Thin, cliitinous, ratlu-r widely, exeavately iimbilicated, thinly, 

 subirregularlj longitudinally striulate, with imlistim-t >[iral line-. 

 yellowish brown or chestnut color, umbilical i-e^ion defined I 

 decide<l an^le, and depression, interior chestnut color, with a p-arl\ 

 sheen. Diam. (>-S mill. 



'//// Urort/i'n, 1\> /';/'" /' 



L. punii/in, ]-]. A. Smith (fig. 34), i- probably tli- -t' tin- 



specie-. 



Section .M i;. AI.OMI-II AI.I-. Uni-ina. 1^71. 



L. i)i-:i-i:i>-A. Sr-iieii/a. IM. ~>\, tiu- 



Minute, \\horl- rapidly eiilaru-in^. the la-l -hint iiiu'ly inflatel, 

 with microscopic, close-set loniritudinal fold- and intermediate 

 spiral stria-, umbilicus wide, it- wall flattened, aperture nbli-, 

 ovate. Length, '_' mill. 



A />/>'> r$ t V 3 fin-. 



