172 AURICULACEA. 



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



A. Floridianus Shutt. is the same as Melampus Floridianus. 



A. Jcmmei Mittre is the same as Melampus bidentatus. 



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



A. oUiqua DeK. is the same as Melampus obliquus. 



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



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



A. Sayii Kiister is the same as Leuconia Sayii. 



A. stenostoma Kiister 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, fig. 22. 



ALEXIA MYOSOTIS Draparnaud. 

 Plate LXXV. Figure 33. Plate LXXIX. Figure 16. 



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

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

 anfr. 7-8, superi convexiusculi, ultimus elliptico-ovatus |. longitudinis 

 testsB ssquans; apertura ovata, subverticalis, 4. long, testse aequans; perlst. 

 tenue, acutum, margine dextro interdura intus armato, basali, appresso, 

 reflexiusculo, in plicam columellarcm intrantem ascendente ; paries 

 aperturalis plicis duobis albis arinata, supera parvula, altera erecta, acuta, 

 transversim intrante. 



SYNONYMS AND REFERENCES. 



Auricula myosotis Draparnaud, &c. 



Auricula denticulata Gould, Invert, of IMass. p. 199, fig. 129, (excl. Voluta denti- 

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



