( 7^6 ) 
which I have by me, that a little furrow paffes inwardly from 
each fooc to the top of the ftone, with a ridge on the outfide of 
it; Befides thefe I have a new fpecies of trochites and Entrochi^ 
which has fix inlets in thehojlow, as the latter has but five 5 but 
with this difference, that thefe Inlets terminate in Angles, fo 
that iis a fexangular hollow, whereas the cinquefoil-inlets arc 
round as the leaf is,Sind not pointed, though 1 havefeen even of 
thefe with fliarp angles. 
3. Concerning the Kdys^ or ridges, and furrows 5 the joynts 
and fccketsby which the Entrocht are joyn*d together , I find a 
great variety in them ; for, as feveral rays, (hooting from a cen- 
ter, muft of necefllty leave confiderable wideneffes betwixt 
them, as they pafs towards the circumference, according to the 
bignefs thereof^fOjto fill tip thofe widenefTes , I find , that in 
fome, betwixt two rays, iffuing from the center, a third ray 
rifes about half way on the ftone from theceneer, and flwots to 
the circumference ; fome have their rays gently widening from 
the center to the circumference: Some have a trunk rifingfrom 
thecente, which grows forked towards the circumference : , 
fometimes betwixt thofe forks there rifes a little ray near the 
trunk where the forks joyn,which flioots to the circumference; 
(but notc,thac thefe differences are fcarce difcernable where the 
rays are fine, but with the help of a Glafs ;) fume again are ra- 
mous, having a trunk rifing from the center, with three, four, or 
five branches fliooting to the circumference; Some are fmooth 
half way on the ftone from the centre, and-have a circle of fmall 
rays near the circumference: Some are fmooth without any 
rays; thefe are commonly pretty thick , and are joyned in an 
Efjtrochos diftGt this manner : one frochitedL little within the out- 
ward circle in the upper and lower parts where the rays ufe to 
be, Iras round inlets or fockets,pretty deep, fothat only a thin 
Tympanum hinders, but ihtTrochite would be hollow at this 
widenefs all through ;and in the middle of this Tympmum there 
is a hole, as in other Trochites^ which is fometimes round, fome 
times like a cinquefoil : The trochites , that anfwer this, on 
both fides have fmooth joynts (I cannot properly call them 
ferervs^ having no ridges) which enter into thefe fockets ^ thofe 
)oynts being hollow alfo, and fo other Tw^/V^jwithfockets 
come on upon thofe again to make up the Entrocbos, Some of 
thefe have both fcckcts and rays ; fome have a focketonthe 
one 
