34 attbiculid^!. 



46. Melampus obovatits. 



Shell imperforate, obversely conic, rather thin, irregularly 

 striated longitudinally, hom-coloured fuscous, with indistinct 

 paler bands ; spire short, rather convex, obtuse ; suture linear, 

 irregular ; whorls six, rather flat, the last forming four-fifths of 

 the total length, attenuated towards the base, which is obso- 

 letely striated spirally, and somewhat gibbous ; aperture per- 

 pendicular, narrow, rounded in front ; parietal plait one, middle- 

 sized, transverse ; columellar plait oblique, rather twisted ; 

 peristome simple, acute; right margin sometimes furnished within 

 with two obsolete transverse ridges. Length 8£, breadth 5 mill. 



Melampus obovatus, H. and A. Adams in Proc. Zool. Soc. 1854, 

 p. 12. n. 32 ; Gen. rec. Moll. ii. p. 243. 



Pfr. Syn. Auric, n. 42 ; Norit. Conch, i. p. 21. n. 34. t. 6. 

 ' f. 10-12 ; Mm. Auric, p. 46. 



Hab. Liberia {Dr. Parkins). 



§ 7. Labrum with a single internal transverse rib. 

 Thalia, Gray. 



47. Melampus ptjsilltjs. B.M. 



Shell imperforate, fusiformly ovate, solid, smooth, slightly 

 shining, dark fuscous or yellowish ; spire regularly conic, apex 

 rather pointed ; suture linear, somewhat irregular ; whorls six 

 to seven, the upper ones rather flat, the last forming two-thirds 

 of the total length, slightly attenuated at base ; aperture nearly 

 perpendicular, semiovate, dilated and rounded in front, with 

 three almost equidistant plaits ; parietal plaits two, the upper 

 one small, the other strong, horizontal ; columellar plait smaller, 

 twisted, not prominent ; peristome obtuse ; right margin callous 

 within, externally sinuated above the middle, internally bearing 

 a whitish transverse rib ; columellar margin slightly reflexed, 

 appressed. Length 14, greatest breadth 8 mill. 



Martini, Conch, ii. p. 119, 127. t. 43. f. 446. 

 Favanne, t. 65. f. H. 4. 

 Voluta, no. 108, Schrot. Einl, i. p. 273. 

 Voluta pusilla, Gmel. Si/st. p. 3436. n. 7. 



Dillw. Cat. i. p. 507. n. 20. 



Wood, hid. t. 19. f. 20. 

 Voluta triplicata, Donov. Brit. Sh. iv. pi. 138. 



Mont. Test. Br. Suppl. p. 99. 



Dillw. Cat. i. p. 507. n. 19. 



Wood, Ind. pi. 19. f. 19. 

 Bulimus ovulus, Brug. in Enc. Meth. i. p. 339. n. 71. 

 Melampa ovulum, Schweigg. Handb. p. 739. 



