NASSA.— Plate XXV. 



- So closely and prominently ridged across, that the shell 

 has the appearance of being encircled with a number of 

 fine rings. 



Species 169. (Mus. Cuming.) 



Nassa collaria. jYa.s-.s-. testa, acuminato-ovatd, albidd, 

 mfescmte-fusco late bifasciatd, lomjitiidinaliter costatd, 

 tramverdm iiodoso-liratd ; aiperturd farm, fmice den- 

 tiridatd, columella tenuilaminatd, hbro conspicne va- 

 ricoso. 



The collar Nassa. Shell acuminately ovate, whitish, 

 broadly two-banded with reddish-brown, longitudi- 



nally ribbed, transversely nodosely ridged ; aperture 

 small, interior denticulated, columella thinly lami- 

 nated, lip conspicuously varicose. 



Gould, C. B. Adams, Panama Shells, p. 59. 



Ha6. Panama. 



A rough-grained acuminated red-banded shell, with a 

 very prominent varix on the lip. 



Pig. 170. (Mus. Cuming.) 



A variety of N. tessellata represented above, in which 

 the painting is darker and more banded. 



