158 



fasciis albis angustis ornato ; columella, nuda, contorta, 

 acuta. 



Highly polished, and of a dark chesnut ; the upper series 

 of tubercles having their intestices picked out with black, 

 sometimes almost in a continuous band. The folds are de- 

 licate, and sharp, with the intervening spaces highly polished. 

 Two narrow pale lines cross the last whorl. 



Guinea, on the sands : Humphreys. 



20. T. fatua. (pi. xlii. f. 28.) Hinds, 1. c. p. 150. 



Testa turrito-subulata, albida, laevigata, polita ; anfractibus 

 subplanulatis, superioribus linea impressa cinctis, maculis 

 fuscis pallidis distantibus biseriatim ornatis ; spira obso- 

 lete plicata ; anfractu ultimo elongato, maculis exceptis, 

 unicolore. 



Shell subulate, subturrited, white, smooth ; whorls flat, 

 lengthened, polished, the upper girdled, ornamented on the 

 margins with two series of very pale somewhat distant 

 brown spots ; last whorl elongated, those of the spire pli- 

 cate. Aperture elongated, effuse. Columella straight, trun- 

 cate ; no canal. 



St. Christopher, West Indies, on the sand: Miller, 1799. 



21. T. albida. (pi. xliii. f. 56.) Gray, 1. c. p. 63. 



Testa conico-subulata, subturrita, alba, laevigata; anfrac- 

 tibus planulatis, linea impressa obsolete divisis, ultimo rotun- 

 dato ; apertura effusa ; columella nuda, contorta. 



Shell conical subulate, somewhat turrited, white, and per- 

 fectly smooth ; whorls flat, and divided by a girdling line, 

 which is not readily visible, destitute of any sculpture ; 

 last whorl rounded. Aperture effuse, with a very short canal. 

 Columella naked, twisted. 



New South Wales, on the sands : Humphreys. 



22. T. chlorata. (pi. xlii. f. 29.) Lamarck, 1. c. v. vii. 

 p. 288. T. Knorrii, Gray, 1. c. p. 59. 



Testa conico-subulata, acuminata, subturrita, laevigata, 

 polita, alba, strigis maculisque fuscis confuse longitudina- 

 liter picta ; anfractibus planulatis, supra medium linea im- 

 pressa cinctis, ultimo elongato interrupts fasciato ; apertura 

 ovali, effusa ; columella contorta ; canali nullo. 



Shell conico-subulate, acuminate, somewhat turrited, 

 smooth and polished, white, with aggregated brown spots, 

 strigae, and lines, sometimes disposed to banding ; whorls 

 flat, smooth and girdled, the last lengthened and banded. 



