362 SS.Tethya. 2.THALASSIOPHYTiE. Pl.cell.aph . 
1. Tethya verrucosa. IVarted tethya. 
Tkallus globose, externally warted, internally fibrous; 
Jibrous in bundles, stiff, asbestine, radiating. 
Alcyonium Lyncurium, Lin. Syst. Nat. 1,1295? 
Alcyonium Aurantiurn, Pallas Zooph. 357 ? 
Spongia verrucosa, Montague Wern. Tr. 2, 117. 
Tethya Lyncurium, Lamarck Hist. 2, 386? 
Sea-shore. 
Thallus more than an inch in diameter, yellowish, slightly 
compressed, uncoated at bottom where it adheres to the 
rock, by which the asbestine spiculae are shown. 
2. Tethya pilosa. Hairy tethya. 
Thallus globose, fleshy, covered with short, thick-set 
hair, internally fibrous ; fibres in bundles, stiff, asbestine, 
radiating. 
Tethya pulvinata, Lamarck Hist. 2, 386. 
Spongia piiosa, Montague Wern. Tr. 2, 1 19. 
Sea-shore. 
Thallus not quite an inch diameter. 
3. Tethya P penicilliformis . Pencil-like tethya . 
Thallus yellowish, spreading horizontally ; surface tube- 
bearing; tubes upright, white, flexible, fibrous; fibres en- 
tangled. 
Spongia Penicillus, Montague Wern. Tr. 2, 95. 
Sea-shore. 
Perhaps only a species of tethya enwrapping a tubular 
sponge. 
\ 
I. Floridea:. Thallus continuous, leatherlike or mem- 
branaceous, formed of interwoven longitudinal fibres, rose- 
red, sometimes growing white in the air ; sporidia either 
immersed in the substance of the thallus, or in capsular 
or tubercular thecae, rarely intermixed with jointed fibres. 
XXXIV. 59. DELESSERIA. Lamouroux. Delesser . 
Thallus flat, membranaceous, regularly veined ; sporidia 
immersed, scattered in the marginal processes of the ribs 
and in roundish spots in the thallas. 
1 . Delesser ia sanguined. Blood-red delesser. 
Thallus round at bottom, branched ; lobes distinct, oblong, 
ovate, simple, not in the least cut. 
