TUBULIPORA. 275 
old bivalve shells. Itis even prettier than the preceding, and 
so like the Prince of Wales’ feather, that you are disposed 
to write “Ich dien” underneath. It is described also as 
fan-shaped, adherent by a thin plate, and only about the 
third of an inch in diameter. Mr. W. Thompson, who has 
met with it in Ireland and England, describes it as fol- 
lows :—“ It forms a beautiful incrustation, which takes the 
figure of a feather, or of several feathers combined, and is 
of a dull opake white colour, except at the margin, where 
the tubes are somewhat transparent and delicately tinged 
with pale lilac. The tubes are transversely wrinkled or 
ridged,—an appearance which increases more than in a re- 
gular ratio as the species approaches a perfect state; the 
space between the tubes is likewise rugose.” 
8. TUBULIPORA SERPENS, H/iis. 
Hab, On all places of the coast; adhering to seaweeds, 
corallines, shells, and often in the inside of old shells. 
The first specimen to which my attention was ever directed 
was sent to me, from Portpatrick, many years ago by my 
friend the Rev. Andrew Urquhart. 
It adheres by a narrow base; the polype-tubes are in 
transverse rows, divided by a longitudinal groove; the cells 
are in general placed close to each other, minutely frosted, 
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