GASTEHOPODA. 19 



four very deep plaits ; aperture large ; inner lip with a thin callous. 

 Yellowish brown. Length, 1'75 ; breadth, T57 ; angle o!' spire, 80. 

 A single specimen is in 1he Auckland Museum. 



MITRA. 



Shell fusiform, thick ; spire elevated, acute ; aperture small, 

 notched in front ; columella obliquely plaited ; operculum small. 

 Widely spread. 



62. M. ofoSGlira, p- noo. Shell ovato-conical ; spire acute ; 

 whorls sub-carinate, those of the spire transversely plicate ; body 

 whorl very finely longitudinally striated; beak spirally striated be- 

 hind; aperture narrow; columella with four plates, the anterior one 

 small ; outer lip angled, deeply notched in front. Blackish brown, 

 spotted with white, especially on the spire ; interior purplish ; beak 

 brown. Length, - 64 ; breadth, '33 ; angle of spire, 60. 



Bay of Islands. 



'* 63. M. aurantiaca, Lanark, lc., x., p. 330. Shell ovate, 

 transversely ribbed ; outer lip crenulated ; columella with four plaits. 

 Golden yellow, with a white baud near the upper part of the body 

 whorl ; the spire whorls are white below, and orange towards the 

 upper part. Length, "85. 



Said by Reeve to come from New Zealand. 



* 64. M!. ILTlCea, Gronovius. Shell oblong, ovate, very thick, 

 solid, spire short, apex small, acute ; smooth, longitudinally rather 

 obsoletely striated. White, marked throughout with rather distant 

 obscure rows of black dots, encircled with two somewhat indistinct 

 black bands ; columella six-plaited, interior of the aperture flesh 

 tinted. (Reeve.} 



MAEGINELLA. 



Shell smooth, bright ; spire short or concealed ; apei'ture truncated 

 in front ; columella plaited ; outer lip (of adult) wirh a thickened 

 margin. 



Tropical. 



65. M!. albOSCenS, sp. nov. Shell small, oval, translucent ; spire 

 short ; aperture narrow ; columella with four plaits. White, with 

 indications of two yellow spiral bauds. Length, '2 ; breath, '1. 



Stewart's Island. Chatham Islands. 



66. M. vittata, sp. nov. Sub-cylindrical, rather flattened below ; 

 spire concealed ; columella with four or five plaits near the anterior 

 end; outer lip not thickened (youug?). Yellowish white, with thin 

 interrupted spiral bands of brown ; columella white. Length, - 35 ; 

 breadth, - 2. 



FAMILY COLUMBELLID^:. 



Shell oval, spire moderate ; aperture narrow, straight, with a very 

 short canal. 



