ATTKICULID.S:. 23 



the last forming a little more than two-thirds of the total length, 

 indistinctly angled above, gradually attenuated towards the 

 base ; aperture nearly perpendicular, oblong, somewhat dilated 

 in front ; parietal plaits two, approximate, the upper one enter- 

 ing; columellar margin obliquely produced to the margin; 

 peristome simple ; right margin blunt, bordered with fuscous, 

 furnished within with a whitish callus bearing transverse 

 ridges ; columellar plait callous, vaulted and appressed. Length 

 13, greatest breadth 8 mill. 



Auricula Tabogensis, C. B. Adams in Ann. Lye. New York, 1852, 



v. p. 435, 542. 

 Melampus Tabogensis, H. and A. Adams in Proc. Z. S. 1854, 



p. 9. n. 5 ; Gen. rec. Moll. ii. p. 243. 



Pfr. Syn. Auric, n. 22 ; Mon. Auric, p. 32. 

 Hah. Panama and Taboga. 



26. Melamptts Kusteri. 



Shell conoidally ovate, rather thin, slightly striated and shin- 

 ing, flesh-coloured, yellow, with broad unequal brown bands ; 

 spire convexly conic, pointed ; suture linear ; whorls nine, the 

 upper ones flat, the last forming nearly three-fourths of the total 

 length, attenuated at base; aperture perpendicular, narrowly 

 semielliptical ; parietal plaits two, the upper dentiform, the 

 other rather duplicate ; columellar plait small, rather triangular ; 

 peristome acute; right margin thickened, behind the spotted 

 border, by a longitudinal callus bearing six to seven unequal 

 transverse ridges ; columellar margin dilated, affixed. Length 

 13, greatest breadth 8 mill. 



Auricula Kiisteri, Krauss in Kiist. Auric, p. 34. t. 4. f. 10, 11. 



Kraim, Siidafr. Moll. p. 81. 

 Auricula monile, Reeve, Conch. Syst. ii. pi. 187. f. 8. 

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



1854, p. 11. n. 22. 

 Melampus Kusteri, Pfr. Si/71. Auric, n. 23 ; Mon. Auric, p. 33. 

 Tralia (Pira) Kiisteri, H. and A. Adams, Gen. rec. Moll. ii. p. 244. 

 Hah. Natal, South Africa. 



27. Melamptts Redfieldi. 



Shell subrimate, ovate, rather solid, slightly striate and shin- 

 ing, whitish, with various, often interrupted brown bands ; spire 

 short, convexly conoidal, pointed ; suture scarcely impressed ; 

 whorls nine to ten, rather flat, the last forming nearly three- 

 fourths of the total length, indistinctly angled above, attenuated 

 at base ; aperture scarcely oblique, oblong, somewhat dilated 

 above the base ; parietal plaits two, the upper one larger, trans- 



