172 Biniiey on Terrestrial Mollusks. 



A. denticulata Gld., DeK. is the same as Alexia myosotis. 



A. Floi-idianus Sliutt. is the same as Melampus Floridianus. 



A. Jaumei Mittre is the same as Mehimpus bidentatus. 



A. nitens Lam. is the same as Mehimpus pusillus. 



A. ohliqua DeK. is the same as IMclampus obliquus. 



A. oUva Orb. is the same as Melampus cingulatus. 



A. pusilla Desli. is the same as Melampus pusillus. 



A. Sayii Kuster is the same as Leuconia Sayii. 



A. stcnostoma Kuster is the same as Melampus cingulatus. 



Genus ALEXIA Leach. 



Shell oblong-ovate, thin, spire pointed; last whorl large, 

 rounded at base ; aperture rather broad, oval, acuminat- 

 ing; parietal wall furnished with from 1 to 5 tuberculous 

 laminae ; columellar fold oblique ; peristome expanded, 

 armed with teeth, or thickened within. (Pfr.) 



The species of this genus are truly terrestrial, though 

 many authors consider them marine. 



We have but one species, A. myosotis. The figure of its 

 animal given on pi. 79, fig. 16, will be found to differ some- 

 what from the figure given in Adams's Genera, which I 

 have copied on pi. 75, tig. 22. 



ALEXIA MYOSOTIS Dkaparnaud. 

 Plate LXXV. Figure 33. 1'late LXXIX. Figure 16. 



T. minute perforata, elongato-ovata, tenuis, laevigata, nitens ; cornea 

 lineA, rufa suturalis cinota ; spira producta, apice acuta ; sutura impressa; 

 anfr. 7—8, superl convexiusculi, ultinms clliptico-ovatus -S. longitudinis 

 tcstiP a^quans ; apertura ovata, subverticalis, i long, testa? jcquans; porist. 

 tcnue, acutum, margine dextro interdum intus armato, basali, apprcsso, 

 reflexiusculo, in j)licam coluniellarem intrantem ascendentc ; paries 

 aperturalis plicis duobis albis arniata, superu |)arvula, altera erccta, acuta, 

 transvcrsim intraute. 



SY^ONY.MS AMJ UEKERENCES. 



Auricula m;/osotis Dkaparnaud, Sec. 



Auricuht denticulata Gould, Invert, of Mass. p. 1S9, fijj. 129, (cxcl. Valuta denti- 

 culata Mont, et syn. suis.) nee Moxtfout. 



