Wu* r 1 Of Shells. 137 
in Calceolaria's Mufeum, and by Bejler. Here are two of 
them, whereof one is near 4 of a yard long. 
One half of the fame fort of (hell cut down the middle- 
By which it appears to be divided by about 40 oblique 
tranfverfe Partitions. 
The Animal is of kin to the Polypus. Famous for the 
Art of Navigation. He rifes to the top of the Water with 
his Shell inverted 5 and being there , returns it. Then ' 
having a thin Membrance fpread againit the Wind tor a 
Sail, two Feet for the Rudder, and two for the Helm, he fails 
along. If any fear anfes, he pulls all in, and filling his fhell 
with Water, immediately finks himfelf to the bottom of 
the Sea. (a) £0 am. 
The PEARLY SAILER, 'Tis both within and without if m ^ 
of the colour of the bell: Oriental Pearl. This fort is Seal, exercit. 
brought from India and the Perftan-Gulf. Hereof ^^^"/oppk- 
laces are fometimes made, As alfo Images and Beads ufed nus. Beiio- 
^ Devotions. J™ £ 
The SPIKED SAILER. The Back and Belly of this Septus 
are flat with two ridges, and on each ridge grows a row 0 f Mufeum ' 
(hort Spikes. 
The MAILED SAILER. Nauticlus Laminatus. I meet 
with it no where. Both within, and efpecially without, 
of the colour of the richer! Pearl. It is compofed of a con- 
fiderable number of Plates, as if in Armor. Yet the Plates 
continuous 5 furrow'd along the middle,and produced with 
a blunt Angle, almoft like a Widows-Peak. From under 
each of which, emergeth a kind of little Tongue, like that 
of a Shoo-Buckle. 
VENUS-SHELL. . Concha Veneris. Becaufe beautiful 
Or elfe, faith Terzagi, quod partem Veneris Imperio fubdi- 
tam refer at. The hrft I (hall name is that with Blobbed-lips, 
or having as it were a white thick Facing. They arc alfo 
furrow'd, and ftained with Cbeftnut Spots. But the Back 
with a Purple. 
VENUS SHELL, with the right Lip furrow'd,but neither 
of them faced or turned out. 
A SECOND of this kind with the left Lip furrow U 
A THIRD, with both Lips furrow 'd. 
The HIGH-BACK'D VENUS-SHELL. Of this kind, 
here are three of a Cbeftnut or Z^-colour $ one ftained 
T with 
