AUBICtTLID^E. 33 



Melampus (Tralia) maurus, H. and A. Adams in Proc. Zool. 

 Soc. 1854, p. 11. n. 23 ? 



Melampus piriformis, Pfr. Syn. Auric, n. 40 ; Mon. Auric, p. 44. 

 H. and A. Adat?is, Gen. rec. Moll. ii. p. 243. 



Melampus lacrynia, Beck, Ind. p. 108. n. 16 ? (Tumaco ; no de- 

 scription). 



Hab. Isle of Tumaco, W. Columbia (H. Cuming). 



45. Melampus bldentatus. 



Shell imperforate, elliptically ovate, rather thin, with irre- 

 gular longitudinal wrinkles, greyish hom-coloured, for the most 

 part eroded; spire short, conoidal, rather blunt; suture obli- 

 terated ; whorls six to seven, moderately convex, narrow, the last 

 forming three-fourths of the total length, slightly angled near 

 the suture, ventricose in the middle, attenuated in front ; aper- 

 ture nearly perpendicular, narrow, oblong acuminate, with two 

 teeth, one parietal, compressed, entering, the other columellar, 

 twisted, descending arcuately to the labrum ; peristome simple ; 

 right margin sharp, scarcely arched, smooth within, or bearing 

 a longitudinal callus sending off two to three, more or less, di- 

 stinct transverse plaits ; columellar margin short, callous, adnate. 

 Length 12, greatest breadth 7 mill. 



Melampus bidentatus, Say in Philad. Journ. ii. p. 245. 



H and A. Adams in Proc. Zool. Soc. 1854, p. 10. n. 6 ; Gen. 

 rec. Moll. ii. p. 243. 



Pfr. Syn. Auric, n. 41 ; Mon. Auric, p. 45. 

 Melampus corneus, Beck, Ind. p. 107. n. 12. 



Stimps. Shells of JV. Eng. p. 51. 

 Melampus lineatus," 2?ec&, Ind. p. 107. n. 7. 

 Auricula cornea, Desh. in Erie. Meth. ii. p. 90. n. 9. 



Lam. Hist. viii. p. 339. n. 28. 

 Auricula bidentata, Gould, Massach. p. 197. f. 130. 



Be Kay, Zool. of New York, Moll. p. 57. pi. 5. f. 92. 



Kiist. Auric, p. 41. t. 6. f. 7-11. 



/3. Shell marked with rather waved fuscous lines. 

 Melampus lineatus, Say in Philad. Journ. ii. p. 246. 



y. Last whorl slightly excavated near the suture, minutely 

 striated spirally ; labrum (behind a fuscous border) whitish, cal- 

 lous, with six to ten transverse ridges. 



Melampus borealis, Com: 



H. and A. Adams, Proc. Zool. Soc. 1854, p. 10. n. 11. 



Hab. _ United States : New York, Massachusetts, Vermont, Ca- 

 rolina. Var. y. Georgia. 



c5 



