CLASS IL— ORDER III. 
GENERA AND SPECIES. 
INARTICULATE POLYPIDOMS. 
UDOTEA. 
A fan-formed, non-articulated Polypidora; creta® 
ceous, uninterrupted rind, marked with many curved 
and concentric lines, which are parallel and trans- 
versal. 
The colour of the individuals, which I have had 
opportunities of observing, has inclined to white, like 
the Halimedas when dry. I am induced to think this 
colour would originally be green, as well as that of 
many Corallinas. 
Their height varies from five to fifteen centime- 
tres. 
The Udoteas originate from the equatorial seas 
