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THE VOYAGE OF H.M.S. CHALLENGER. 
3. Chorizopora, Hincks. 
Chorizopora, Hincks, Brit. Mar. Polyz., p. 222. 
Mollia (sp.), d’Orb., Smitt, nee Lamx. 
Flustra (sp.), Audouin. 
Lepralia (sp.), Brit. Mus. Cat., Macgilliv., Hassall, Johnst., Gray, &c. 
Hippothoa (pars), Smitt. 
Schizoporella (pars), Hincks. 
Character. — Zooecia often distinct, connected by hollow calcareous processes. Mouth 
semicircular or sub orbicular, with a straight or sinuated lower border. Ooecial orifice 
crescentic. Wall of zooecia usually transversely wrinkled. 
The name Mollia, originally applied by Lamouroux to two or three species of 
Membranipora, has been used in so many senses since, that I quite agree with Mr. Hincks 
in disusing it. But the genus as it stands is at present ill defined. I include under it 
the various forms, more or less closely allied to Lepralia hyalina, Auctt. 
(1) Chorizopora brongniartii, Audouin (sp.). 
Chorizopora brongniartii, Hincks. 
Flustra brongniartii, Audouin, Expl. i. p. 240. 
Lepralia tenuis, Hassall. 
Lepralia assimilis, Johnst. 
Lepralia brongniartii, Bk., Brit. Mus. Cat., vol. i. p. 65, pi. lxxxi. tigs. 1-5, Heller, Manzoni. 
Lepralia capitata, Reuss. 
Mollia brongniartii, d’Orbigny. 
Habitat. — Simon’s Bay, Cape of Good Hope, 18 fathoms (on a dead shell). 
[Mediterranean, Adriatic, North Atlantic, lat. 47° 35 '- 58 ' N., long. 7° 6' W., 89-205 
fathoms. Coasts of France and Britain Coralline Crag ; Pliocene at Yolterra and 
Miocene at Castrocaro.] 
Savigny’s figure (“ Egypte,” pi. x. fig. 6), appears to me more like a variety of Chorizo- 
pora hyalina, as it shows no trace of avicularia. 
(2) Chorizopora hyalina, var. bougainvillei (PI. XXII. fig. 4). 
Fscharina bougainvillei, d’Orbigny, Am4r. M4rid. p. 12, pi. iv. figs. 9-12. 
Lepralia hyalina, var. bougainvillei, Bk., Kerguelen Polyz., p. 5, pi. x. fig. 10. 
Habitat. — Station 149d, Royal Sound, Kerguelen Island, 28 fathoms, volcanic mud. 
Station 315, lat. 51° 40' S., long. 57° 50' W. ; 12 fathoms (on a species of Carbasea ). 
Station 135a, off Inaccessible Island, Tristan da Cunha, 75 to 90 fathoms, hard ground, 
shells, gravel. 
[Swain’s Bay, Kerguelen, Eaton.] 
(3) Chorizopora honolulensis, n. sp. (PI. XXII. fig. 12). 
Character. — Zooecia erect and sub tubular above, deeply immersed at the base, and 
ventricose. Large open spaces or cancelli in the interzocecial sulci, and constantly a large 
