202 TURRITELLA. 



T. NODULOSA, King. PL 63, figs. T8-80. 



Whorls 14 or 15, nodulously ridged, a central ridge usually 

 stronger, making an angulation, concave and striate in the mid- 

 dle ; light yellowish brown, longitudinilly chestnut-flamed be- 

 tween the nodules Length, 2 inches. 



Gulf of Dalce, Central America. 



Perhaps only a variety of the preceding species. T. papillosa, 

 Kiener (fig. 80), is a synonym. 



T. AQUILA, Ad. and Reeve. PI. 63, fig. 81. 



Whorls 14-15, concavely sloping around the upper part, then 

 somewhat obscurely broadly two-ribbed, conspicuously engraved 

 throughout with grooved striae, last whorl neatly ridged and 

 striated beneath ; swarthy brown, obliquely spotted and 

 streaked with reddish chestnut. Length, 1-6 inches. 



Nagasaki Bay, Japan. 



" The painting of this species has rather'a dotted appearance 

 from its being everywhere cut through by the striate grooves.'' 

 REEVE. 



C. BICINGULATA, Lam. PL 63, fig. 82. 



Whorls about 18, each bearing two strong, rounded, nodulous 

 ribs, separated by a narrow, concave groove, which is closely 

 striated, base concentrically ridged ; yellowish or purplish 

 white, thickly covered with purple-chestnut longitudinal flames, 

 aperture maculated purplish. Length, 2*5-3 inches. 



Cape Verd Is. 



It is T. biangulata, Blainv. 



T. MACULATA, Reeve. PL 63, fig. 83. 



Differs from the preceding species in the keels of the earlier 

 whorls being comparatively obsolete, the base of the shell more 

 concave, and marked by numerous colored linear striae, which 

 are continued over the whole shell. There is none of the bold 

 blotchy painting which distinguishes T. bieingulata, but the 

 upper margin of the whorls has a row of irregular chestnut, 

 spots immediately bciiea'li the suture. Length, 2'75 inclu's. 



China Sea. 



