HALIOTIS COSTATA. 
(Lot 90.) 
H, (div. 1.) testd convexd, pallidd, costis numerosis, integris, obtusis, 
longitudinalibus @ spird levatd divergentibus, in superficiem in- 
ternam conspcuis ; foramenibus numerosis, rotundis, vix levatis. 
Shell convex, pale, with numerous obtuse, entire, longitudinal ribs, 
diverging from the elevated spire, and which are conspicuous 
on the under surface; perforations numerous, roundish, and 
slightly elevated. 
Martini, vol. 10. tab. 166. fic. 1604. 
Tue interior side of this species is very elegant, being some- 
times marked by fine lines crossing the sulcations of the 
ribs, owing to some specimens having additional longitudinal 
strie, which in others are obsolete or wanting. Inhabits 
New Zealand. Martini has tolerably figured this shell, but 
without naming it. 
HALIOTIS CRENATA. 
(Lot 428 and 542.) 
H. (div. 1.) testé parod, ovatd, striis transversis rugisque nodosis 
sparsis, scabrd ; spird mediocri; foraminibus remotis, levatis, vax 
rotundis ; labio exteriore intus crenato. 
Shell small, oval, with transverse sulcated strice, and scattered 
nodulous wrinkles ; spire moderate ; perforations remote, ele- 
vated, nearly round; interior margin of the outer lip crenated. 
Tuis species seldom exceeds the size of those in Lots 428 and 
542; the largest of the series in my own collection being 
scarcely two inches long ; little dependence can be placed, 
throughout the earshells, on the sculpture or surface of the 
