174 



impressed lines, above with a coarse nodulous girdle ; last 

 whorl squarish, banded. Aperture brown within, square. 

 CoKimella twisted, covered with a very thin callus. 



Abundant in various localities on the west coast of America, 

 between Panama and the Bay of Magdalena in Lower Cali- 

 fornia, in from five to thirteen fathoms ; also at the Galapagos, 

 in ten fathoms, chiefly in sandy situations. It was also found 

 imbedded in the fossiliferous cliffs which surround a portion 

 of the Bay of Magdalena. 



67. T. ASPERA. (pi. xliii. f. 44.) Hinds, 1. c. p. 134. 

 Testa turrito-subulata, acuminata, pallida, aurantiaca vel 



fusca; anfractibus subrotundatis, longitrorsura subconferte 

 plico-costatis, nodulosis, liris transversis decussantibus, superne 

 cingulo plico-nodulifero sparsim fusco maculato ; anfractu 

 ultimo rotundato, ad basin albo fasciato; apertura colorem 

 testae simulante ; columella contorta. 



Shell subulate, turrited, acuminate, fluctuating from pale to 

 orange or dark brown ; whorls somewhat rounded, with 

 numerous closely-set longitudinal folds, these being crossed 

 by transverse grooves, originate numerous small prominent 

 tubercular interspaces ; the upper area is usually pale with 

 distant reddish-brown spots ; last whorl rounded, banded 

 with white. Aperture oblong. Columella twisted. Canal short. 



Panama, Monte Christi, St. Elena, west coast of America ; 

 in from six to ten fathoms, sandy mud : Cuming. 



68. T. RADULA. (pi. xliv. f. 95.) Hinds, 1. c. p. 155. 

 Testa turrito-subulata, fulva, nitida ; anfractibus rotundatis, 



plicis tuberculatis longitudinalibus et transversis cancellatis, 

 prope suturam serie tuberculorum majusculorum ; anfractu 

 ultimo ad basin albo anguste fasciato ; apertura oblonga, con- 

 colore ; columella contorta, acuta. 



The whorls are rounded and cancellated, with small 

 tubercular elevations at the angles. The series of tubercles 

 above the girdling is somewhat paler, and the last whorl 

 has a narrow band. The shell is unique, in Mr. Cuming's 

 collection. 



Puerto PortrerOjWest coast of America ; in thirteen fathoms, 

 coral sand : Cuming. 



69. T. BiFRONS. (pi. xliii. f. 57.) Hinds, 1. c. p. 155. 

 Testa turrito-subulata, laevigata, fusca; anfractibus rotun- 



datis, inferioribus multiseriatim tuberculatis, superioribus 

 longitrorsum biseriatim tuberculo-plicatis ; tuberculis parvis 

 approximatis, interstitiis laevibus ; apertura oblonga; columella 

 rectiuscula, subtruncata. 



