APPEND rx. xxvn 



not in the least recurved; the aperture is longeF 

 than the spire, and is brown within ; the outer lip 

 crenated, and the pillar five-plaited. The ground 

 colour of the shell is white, with four or five longi- 

 tudinal grey waved stripes, and transverse dotted 

 bands of pale yeUow between the grooves. Length 

 nearly one inch. 



2096. MITRA LEUCOSTOMA, Swainson. 



M. testa ovata, laevi, epidermide olivace^, lineis fus- 

 cis, capillaribus, transversis cinct^ : apertura ef- 

 fusa alba. 

 Shell ovate, smooth, epidermis olive with transverse, 

 brown, capillary lines ; aperture effuse, white. 

 Obs. Size and shape of M. lugubris. Swains. 

 Length 1 J ~. Shell entirely smooth, white, but en- 

 tirely covered by a thin olive epidermis, v/hich forms 

 a paler band adjoining the upper mai'gin of each 

 whorl: numerous, slender, and well defined brown 

 lines encircle both the body whorl and spire, these 

 lines are slightly indented, and, in some parts, ap- 

 pear as if minutely punctured. The base is without 

 grooves, the outer lip is smooth, and the aperture 

 pure white; suture uneven; pillar four-plaited; 

 spire and aperture of equal length, 



2097. MITRA UUGOSA, Swainson. 



M, testa, subfusiformi, perforata, turrita, rugosa, de- 

 cussatim sulcata; anfractibus angulatis, anfractu 

 basali medio contracto ; basi subrecurva. 

 Shell subfusiform, perforated, turreted ; rough with 

 decussated grooves, whorls angulated, basal whorl 

 contracted in the middle, base sub-recurved. 

 Obs. The shape of this curious species comes 

 nearest to that of M. coste/laris, but the spire is 

 longer in proportion, and the basal part less con- 

 tracted. The whole shell is rendered very rough by 



