$62 58. Tethya. 2. THALASSIOPHYTZ. Pi. cell. aph. 
1. Tethya verrucosa. Warted tethya. 
Thallus globose, externally warted, internally fibrous; 
Jjibrous in bundles, stiff, asbestine, radiating. 
Alcyonium Lyncurium, Lin. Syst. Nat. 1, 1295? 
Alcyonium Aurantium, 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 spicule 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 pilosa, Montague Wern. Tr. 2,119. 
Sea-shore. 
Thallus not quite an inch diameter. 
8. Tethya ? penicilliformis. Pencil-like tethya. 
Thallus yellowish, spreading horizontally; surface tube- 
bearing; éwbes upright, white, flexible, fibrous; fibres en- 
tangled. 
Spongia Penicillus, Montague Wern. Tr. 2, 95. 
Sea-shore. 
Perhaps only a species of tethya enwr apping a a tubular 
sponge. 
I. Fuoripex. 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 thecze, rarely intermixed with jointed fibres. 
XXXIV. 59. DELESSERIA. Lamouroux. Delesser. 
Thallus flat, membranaceous, regularly veined ; sportdia 
immersed, scattered in the marginal processes of the ribs 
and i in roundish spots in the thallus. . 
1. Delesseria sanguinea. Blood-red delesser. 
Thallus round at ‘bottom, branched; doles distinct, pone. 
ovate, simple, not in the least cut. 
