258 MANGILIA. 
granules and a deep groove beneath the suture, and with straight 
instead of oblique ribs. Perhaps a Drillia. 
M. ericea, Hinds. PI. 16, fig. 71. 
Light brown; slightly shouldered, the ribs continued to the 
sutures, nodulous below the shoulder, by the crossing of revolvy- 
ing lines. Length, 12°5 mill. 
Coast of Veragua. 
M. cauata, Hinds. PI. 16, fig. 67. 
Whorls shouldered, with an elevated revolving line below the 
suture, shortly obliquely ribbed below the shoulder ; dark chest- 
nut, aperture blackish. Length, 6°5 mill. 
Gulf of Fonseca, mud, 20 fms. (Hinds). 
M. concEntTRicosTaTa, Reeve. PI. 15, fig. 48. 
Shell slenderly fusiform, spire acuminated, whorls very closely 
concentrically ribbed, sutures simple ; flesh-tinged brown. 
Length, 12 mill. 
Habitat unknown. 
Closely allied to M. variculosa, Sowb., but without the raised 
revolving striz of that species. 
M. MARGARITIFERA, Gray. PI. 15, figs. 39, 43. 
Whorls rounded or very slightly shouldered, reticulated by 
longitudinal and revolving fine ribs and lines; yellowish brown, 
tinged with chestnut, sometimes forming an indistinct central 
band. Length, 7 mill. 
Habitat unknown. 
With this species I unite M. dxdala, Reeve (fig. 48), also 
described without locality, but for which Mr. Brazier indicates 
Torres Straits, N. Australia. 
M. cARDINALIS, Reeve. PI. 15, fig. 44. 
Obliquely longitudinally plicated, minutely transversely stri- 
ated ; yellowish white, with three narrow chocolate bands. 
Length, 10 mill. 
Isle of Negros, Philippines. 
M. CRASSILABRUM, Reeve. PI. 15, figs. 45, 47. 
Shell narrowly shouldered, the shoulder smooth, tubercularly 
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