ae 
GASTEROPODA. 197 
Diameter three-tenths of an inch; altitude one-fourth of an inch. 
Inhabits New Zealand. 
The characters of this shell do not bring it strictly within the 
typical form of Solarium, but its facies is rather that of Solardwm 
than of Trochus. It is to be grouped with S. dealbatum, Hinds, 
which it closely resembles. It is also similar in form, colour, and size 
to Margarita obscura, Couthouy. Perhaps it would come under the 
genus Torinia, Gray. 
Figures 226, 226 a, the side and base of the shell, enlarged ; 226 8, 
details of the sculpture ; 226 c, natural size. 
Lirrorina PATULA (Gould). 
Testa magna, soda, rudis, rotundato-ovata, cinereo-olivacea allbido 
maculata: spira anfractibus quinque, ultimo magno, ventricoso ; 
sutura viz impressa: apertura ampla, rotunda; columella lata, ex- 
cavatd, alba; facie ventral teste quasi attrita, et macula fusca 
notata ; fuuce castanea, anticé albo-vittata. 
Inttorina patula, Goutp; Proceed. Boston Soc. Nat. Hist., iii. 83. 
March 1849. Expedition Shells, 52. 
SHELL rather large, solid, rude, broad-ovate, grayish-olive, irregu- 
larly mottled longitudinally with whitish, marked with unequal and 
irregular strie of growth, and a few delicate, broken, revolving lines: 
whorls five, the last one very large, ventricose; the others but little 
convex, forming a low, conical spire: suture faint, with something of 
a constriction in front of it, on the lower whorl. Aperture very large, 
the columella broad, white and excavated, and having the body of the 
whorl apparently abraded, so as to cause the mouth to seem circular, 
and presenting a dusky blotch at its upper portion ; aperture chestnut- 
coloured, with a pale band in front: opercle dark chestnut. 
Length three-fourths of an inch; breadth half an inch. 
50 
