166 



impressed lines ; last whorl obscurely banded. Aperture 

 rather square. Columella naked, twisted. A short canal. 



Guayaquil ; in seven fathoms, sandy mud : Cuming. 



45. T. eburnea. (pi. xlv. f. 123.) Hinds, 1. c, p. 153. 



Testa obeso-subulata, alba; anfractibus lrevigatis, nitidis, 

 superne linea impressa, inferne uni-vel biseriatim lineis punc- 

 tatis, cinctis ; anfractu ultimo seriebus quinis linearum punc- 

 tarum ; apertura elongata ; columella lsevi, breviuscula. 



Solid, like ivory, the inferior whorls obese and smooth, the 

 superior plicate, above girdled by a punctated line ; one or 

 two others, similar but less conspicuous, transverse the inferior 

 part, and on the last whorls these are several times repeated. 

 The columella is truncate, and slightly callous. 



Seychelles. 



46. T. amanda. (pi. xlv. f. 100.) Hinds, 1. c. p. 154. 



Testa elongate conico-subulata, nitida ; anfractibus planu- 

 latis, superne cingulo tuberculato margaritaceo cinctis, infra 

 secundo minore concolore, inferne aurantiacis biseriatim punc- 

 tato-lineatis, ultimo brevi ; apertura parva, quadrata ; colum- 

 ella contorta. 



An uncommonly pretty shell, offering an elegant contrast 

 between the row of pearly tubercles and the general orange 

 colour. It is only known to me from two individuals in the 

 collection of Sir Edward Belcher, and as neither of these 

 has attained mature age, the characters of the columella 

 are wanting. 



Straits of Macassar; in eleven fathoms, coarse sand. 



47. T. tessellata. (pi. xlv. f. 124,) Gray, 1. c. p. 61. 



Testa subulata, turrita, laevigata, alba, brunneo interrupts 

 trifasciata ; anfractibus planulatis, superne seriebus duabus 

 tuberculorum instructis ; apertura quadrata; columella con- 

 torta ; canali mediocri. 



A single specimen only of this species exists, and which is 

 in the collection of the British Museum. 



Native country unknown. 



48. T. lig ata. (pi. xlv. f. 117, 118.) Hinds, 1. c. p. 153. 



Testa elongate subulata, acuminata ; anfractibus planulatis, 

 transversim striatis, cingulis duobus tuberculatis, cingulo 

 superiore et area inferiore maculis quadratis fuscis transversis 

 ornata, cingulo inferiore minore albida concolore ; anfractu 

 ultimo parvo, biseriatim maculato. 



An attractive shell, which though like T. triseriata it pos- 



