Zoological Society. 65 



This species approaches nearest in form to the Marg. triticea of 

 Lam., but has a mucli narrower aperture, and the edge of the hp is 

 strongly serrated its entire k'ngth. 



Marginella contaminata. Marg. testa oblongo-ovatd, pallide 

 fioris lactis colore ; extus tenuissime striata; aperturd lata, 

 labio c?-asso, columella sexplicatd, plicis trihiis anticis prominen- 

 tioribus ; margine lato, planulatoque ; apice proyninente ohtu- 

 sissimo. 



Shell oblongo-ovate, of an uniform pale cream colour, without 

 bands or markings ; internally the colour is somewhat darker ; ex- 

 ternal texture of the shell is finely striated : the striae terminate ante- 

 riorly at the thickened varix over the arch of the channel curving to- 

 wards the columella, and in a similar manner at the edge of the white 

 deposit around the spire ; base round, aperture wide, slightly curved; 

 on the columella are six or more white plaits, the three anterior being 

 rather prominent, the first continuing to form the inner side of the 

 channel ; the second forms a varix on the base of the shell ; the 

 channel broad and deep ; a white deposit exists on the columella 

 within the aperture, which widens and thickens outwardly from about 

 the anterior fourth of the aperture, covering the plaits and proceeding 

 over the arch of the channel, forming there a ridge or varix at its 

 posterior edge, and diminishing in width as it approaches the lip, 

 along the whole length of which it continues forming a broad flat 

 margin, and terminates around the spire, which is also covered by it : 

 apex slightly prominent, very obtuse. 



Long, 1 inch ; wide, -^^ of an inch. 



Hah. ? 



Cab. Cuming, Gaskoin. 



It differs from Marginella cornea. Lam., in its more elongated 

 form, the number, distribution and construction of the plaits, in its 

 broad, flat margin, in the thinness and planeness of the lip internally, 

 the varix at the anterior part of the base, &c. 



Marginella lineato-labrum. Marg. testa ovatd, Icevi, an- 

 fractibus postice rotundatis, pallide Jiavescente, nigro lineato- 

 punctatd; spird prominente ; basi rotundatd ; aperturd latis- 

 simd ; columelld quadriplicatd ; labio crassiusculo, marginato, 

 lineis octo vel novem transversis, supra labrum et marginem 

 continuis. 

 Shell ovate, smooth, the whorls even (not crenulated), of a light 

 yellow-brown colour, having on the last whorl nine rows of distinct 

 small black spots, or short markings, obliquely longitudinally placed, 

 the two posterior rows of which are continuous along the whorls of 

 the spire even to the apex ; spire very prominent, whorls rather gib- 

 bous ; base round ; aperture very wide ; the columella has four white 

 prominent plaits, the two anterior passing obliquely outwards, the 

 first to form the inner elevated side of the channel, the two posterior 

 are transverse ; lip, slightly bowed, is thick and marginated, and has 

 eight or nine nearly equidistant, dark-reddish, somewhat broad lines 

 crossing its edge and continuing over the margin ; margin continuous, 

 Ann. ^' Maq. N. Hist. Scr. 2. Vol. v. 5 



