172 



but the impressed line of the upper area, and the groove on 

 the last whorl in that shell, with other features, are sufficient 

 to distinguish them. Here both margins of the girdling line are 

 tumid, and prominent above the general surface. Ceylon. 



61. T. columellaris. (pi. xliv. f. 77?) Hinds, 1. c. p. 151. 

 Testa elongata, subcylindracea, turrito-subulata, aurantiaca, 



albo nebulosa ; anfractibus subrotundatis, longitrorsum 

 undatim plico-costatis, superne linea, impressa cinctis ; inter- 

 stitiis rufis, striatis; anfractu ultimo breviusculo, rotundato, 

 albo fasciato. Apertura effusa ; columella nuda. 



Remarkable from its great similarity to T. undulata, which 

 is itself a peculiar species. The grounds of distinction are its 

 decidedly cylindrical shape, different distribution of the colour, 

 and its short, abrupt, rounded and banded last whorl. At 

 plate xlv. fig. 127, is represented a white variety, but whicli 

 has in all probability lost its colour. 



Native country unknown. 



62. T. undulata. (pi. xliii. f. 55.) Gray, 1. c. p. 60. T. 

 pertusa, Kiener, Iconographie, var. t. 11. f. 24, c. 



Testa attenuate subovali subulata, acuminata, turrita, nitida, 

 aurantiaca; anfracfibus planulatis, superne linea impressa 

 divisis, longitrorsum plicatis ; plicis obtusis, confertis, obliquis, 

 supra cingulum nodulosis, albidis, interstitiis striatis ; anfractu 

 ultimo attenuato, concolore ; apertura utrinque attenuata, 

 aurantiaca ; columella nuda, rectiuscula. 



The inferior whorls are slightly swelled, which separates it at 

 once from many species, all of which may be regarded as very 

 lengthened cones ; the folds are rigidly oblique, and the inter- 

 vals rather closely striate ; the upper nodulous range is white, 

 but everywhere else it is of a clear orange. The last whorl and 

 aperture are unusually attenuate. M. Kiener has considered 

 it as a variety of T. pertusa, which is truly a very different 

 shell. Bow Island ; New Guinea ; Straits of Malacca. 



63. T. affinis. (pi. xliv. f. 78.) Gray, 1. c. p. 60. T. 

 striata, Quoy, Voy. de l'Astrolabe, p. 468. t. 36. f. 23, 24. 



Testa elongate subulata, turrita, polita, alba, rufo subseria- 

 tim picta : anfractibus sulco divisis, longitrorsum plicatis ; 

 plicis magnis, planis, latis, interstitiis angustis, striatis ; an- 

 fractu ultimo attenuato, tranversim rufo-fusco lineato ; aper- 

 tura effusa ; columella rectiuscula, contorta. 



The individuals vary much ; generally they are small and 

 dwarf, and it is then the shell described by Mr. Gray ; sometimes 

 they are large and fine grown, in which case it is the shell of M. 

 Quoy. Mr Gray observes that it is allied to T. nubeculata, 

 but smaller and of more slender proportions. The shell 



