NASSA.— Plate XXL 



(dro-cuwrc'd, lincis alhidis iiiterriqitis cuignlatd, Ion- 

 git'udiuaUter crasse plicato-costatd, transversivi liratd 

 et subtilmivii striata; apertiird parvd, coluvielld hre- 

 vilammatd, lahro crasse va.ricoso, intiis dentkulato. 



Stimpson's Nassa. Shell acuminately conical, black-ash, 

 encircled with interrujited white lines, longitudinally 

 thickly plicately ribbed, transversely ridged and very 

 finely striated ; aperture small, columella short-lami- 

 nated, lip thickly varicose, denticulated within. 



Bucciniim Stimpsoniannm, C. B. Adaras, Panama Shells, 

 p. 73. 



Hnh. Panama (under stones near low-water mark) ; C. B. 

 Adams. 



Encircled with fine ridges, which on crossing the ribs 

 are whitish and look like interrupted lines. 



Species 144-. (Mus. Cuming.) 



Nassa albipunctata. Nass. testa ornto-tnrritd, pallidd, 

 fascils riifiscentihiis albipunctalls sttLuhscuri cbictd, 

 Jon(jitndinaliter cost aid ; aiifractihus rot undo f is, Uris 

 ti'iniibus aciitis svperne et iiiferne cingtdatis ; aperiurd 

 parvd, faucc deidiciihitd, cohmieUdhrevilaminatd, lahro 

 crasse varicoso. 



The white-dotted Nassa. Shell ovately turi'eted, pale, 

 rather obscurely encircled with faint reddish-white 

 dotted bands, longitudinally ribbed ; whorls rounded, 

 encircled round the upper and lower parts with fine 

 sharp ridges ; aperture small, interior denticulated, 

 columella short-laminated, lip thickly varicose. 



Hah. ? 



A solid conspicuously ribbed shell, distinguished by its 

 faint white-dotted bands. 



