Part I. Of Quadruped's. 
37 
branched Sutures, and the Alternate commijfures of the Bones. 
Anfwerable to the Rule of Nature,in a Humane Skull: and 
of Art, in the laying of Stones in Bui/dings 5 and in cover- 
ing of broader Vaults, not with one Arch, but feveral lefler 
ones, for the greater ftrength. 
A lefler CHEQUE R'D SHELL. Perhaps SteUata 
Wormii, (a) or a kin to it. The Convex work is compo- (*) See his 
fed of black and citrine pieces, cancellated, and tranfverily m ^ mn ' 
notched 5 ten, eleven, or twelve of them meeting m a 
fquare, and rugged centre 5 each looking like a Star fur- 
rounded with Rays. The feveral Areas rife up into a con- 
vexity fomewhat greater, than in the Shell above dcfcnb'd. 
Juft before the Tail, the edges are bended a little upward 5 
over the Tail, downward. The Belly-piece is joyned to the 
Back-piece for the length of two inches and with the 
edges turned upward. The middle of it flat, ftreak'd, and 
cancellated 5 the hinder part endeth in a double broad 
point. 
Two more CHEQJJER'D SHELLS of the fame 
Species 5 faving, That here are not fo great a number of 
Rays to each Star. 
Another of the fame $ excepting, that the feveral arched 
pieces are not fo high, as in the former. 
A CHEQJJERD-SHELL, from Suranam. I think 
no where defcrib'd,or figur d,unlefs perhaps by Mofcharcfus. 
The convex work is compofed of black and citrine pieces,in 
the Margin, of a Pyramidal or wedged Figure, oppofitely 
fet, and with tra?ifverfe Notches : amongft which there are 
alfo little fquare, rugged, and citrine pieces intermixed. 
Ail the reft, which are alfo black and citrine, are fix times 
as big, adorned not with tranfverfe but paralell Notches. 
Neither are they Radiated, but feveral of the fame kind 
contiguous fide to fide. They are composed into Areas 
almoft flat : the centres whereof are alfo rugged, but much 
bigger than in the Shell laft defcribed. The Belly-piece is 
alfo lefs convex. 
Another of the fame Species. 
Another CHEQUE RT> SHELL from Suranam, 
of kin to the laft defcrib'd. The edges of this are round 
about, excepting before, turn d up outward. The Back alfo 
is lefs convex 3 the Belly, more deep. 
Another 
