54 THE XAVTILl >. 



It has some resemblance to L. mm but the columella is 



quite different and the aperture is differently shaped. Burner's two 

 central figures in Land and F.-W. Shells, rig. S6 accurately picture 

 the species and the original specimens in the Smithsonian ^No. 8304) 

 seem to be the same. It has probably been named binneyi or solida 

 in collections but it seems to be a distinct species, related to the 

 bi'nneyisoiida-eatascopium group of LymittMS. Mr. H. 0. Hinkley 

 collected the specimens. 



Ltmxjia pseudopixguis n. sp. 



Shell globose or globosely ovate, thin and fragile: color very light 

 corneous inclining to yellowish, sometimes brownish; surface dull to 

 shining, but not polished, growth lines very heavy and spiral lines 

 deeply incised; whorls 4 _u. rounded: the body-whorl globosely inflated. 

 the whorls increase very rapidly in size, the last whorl occupying from 

 | to -| of the length of the shell; spire usually short, depressed, dome- 

 like, sometimes more elongated; sutures well-marked, bordered below 

 by a wide, yellowish band; aperture ovate or roundly-ovate, some- 

 times a trifle expanded and somewhat effuse anteriorly: inner lip 

 rather broadly expanded, triangular, reflected over but not closing 

 the umbilicus, which is a conspicuous chink; there is no columellar 

 plait in the majority of specimens; the parietal callus is very thin or 

 wholly lacking. The axis is but slightly twisted. 



Length 9.0, width 6.5. aperture length 6.0. width 3.5, mm. 



Length 9.0. width 6.0, aperture length 6.0. width 3.5, mm. 



Length 9.5, width 6.75, aperture length 6.5, width 3.5. mm. 



Length 8.2, width 5.5, aperture length 5.4, width 3.0, mm. 



Length 8.0, width 5.5. aperture length 5.0, width 3.0, mm. 



Length 14.0, width S.0, aperture length S.O, width 4.3, mm. 



Length 12.5. width 7.5, aperture length 7.3. width 4.0, mm. 



Length 11.0, width 7.0, aperture length 7.0, width 3.5, mm. 



Length 7.2. width 5.0, aperture length 5.0, width 8.0, mm. Mt. 

 Sinai. 



Length 7.5. width 5.0, aperture length 5.0, width 2.5, mm. Mt. 

 Sinai. 



Types: Chicago Academy of Sciences; Cotypes. collection Miss 

 Mary Walker, Buffalo, N. Y.. Mr. Bryant Walker, Detroit. Mich., 

 Academy Natural Sciences, Philadelphia and the Smithsonian Insti- 

 tution, Washington. 



