Hurrox.—On new Tertiary Shells. 827 
Nassa (Tritiaria) cingulata. 
Shell elongato-ovate, the spire produced, acute. Whorls 74, the first 
two embryonic, the others rounded, spirally and longitudinally ribbed ; 
about 6 spiral ribs on the spire whorls and 12-14 on the body whorl ; about 
18 longitudinal ribs on a whorl: some of the spiral ribs are double. Aper- 
ture ovate; a small posterior sinus; anterior canal very short and re- 
curved ; columella and right lip smooth; callus on inner lip small but 
defined. ) 
Length, 1:05 inch ; breadth, :47 inch. Aperture, ‘42 inch. 
Locality. Greta, Canterbury. 
Perhaps a Cominella. 
Cominella monilifera. 
Shell small, ovate, the spire rather short. Whorls 5-6, the first two 
embryonic, the others longitudinally and spirally ribbed ; about 14 longitu- 
dinal low ribs on the body whorl, the intervals as broad as the ribs ; 11-12 
spiral ribs on the body whorl, close, making the longitudinal ribs nodulose ; 
posterior portion of the whorls concave, covering the suture. Aperture 
ovate, the posterior canal strongly marked ; anterior canal quite short; 
outer lip thickened, toothed inside. 
Length, 68 inch ; breadth, :44 inch. 
Locality. Shepherd's Hut, Waipara. 
Terebra biplex. 
Shell turreted ; whorls 9 or 10, flattened, longitudinally ribbed ; ribs 18 
in a whorl, sharp, straight or slightly curved, usually higher at each end 
than in the middle, especially on the anterior whorls of the shell; on the 
body whorl they end suddenly at the shoulder. Aperture oval; a posterior 
sinus apparent; anterior canal short, not much twisted. 
Length, *7 inch; breadth, -2 inch. 
Locality. Pareora. 
Differs from other New Zealand species in the shouldered whorls and 
peculiar ribs. 
Clathurella cincta. 
Shell fusiform, the spire produced and acute. Whorls 7-8, rounded, the 
first two smooth, the others longitudinally plicated and spirally ribbed ; 
plications low, about 10 in a whorl; spiral ribs strong, distant, narrow, 5 
on the penultimate whorl, of which the two posterior are smaller. On the 
body whorl there are 16-18, some of which are alternately larger and 
smaller; suture well marked. Aperture ovate, produced into a short an- 
terior canal. 
Length, :85 inch ; breadth, 15 inch. 
Locality. White Rock River. 
