WORMS. ZOOPHYTA. go. Madrepora. 617 
Inhabits the | Zzdiaz and Red Seas: fometimes with, fometimes 
without foot-ftalk ; 1—6 inches in diameter: white, with a 
concave centre and rough beneath: g/// acute, alternately - 
fhorter and irregularly ferrate. 
Patella. Without ftem: gills granulate at the fides, denticulate at 
the margin and placed. in a triple order, the third 
reaching from the centre to the margin. 
Soland. and Ellis Corall. p. 148. 2.1. tab. 28. f. 1—4. 
Inhabits the Mediterranean; 1% inch diameter. 
All the gi//s denticulate at the margin and very rough at the fides : 
the-younger fpecimens flat, the adult ones convex. 
Clavate, turbinate with a tapering bafe: {tar obconic with 
a doubled prominent jagged centre. 
Soland. and Elks Corall. p. V50, u. 3. tab. 28. fig. 7. 
P anc. conch. ed. 2. p. 128. tab. app. 18. fig. M. 
Inhabits Southern coaíts of Europe; about 2 inches long and 3 
diameter: white and very hard: g7//s about 40, with as many 
intermediate fmaller ones, the latter reaching to the margin, 
but not extending to the centre. like the larger ones. 
Cyatbus, 
B. With numerous feparate flars, and coniinued gills. 
Pileus. ‘Without ftem, oblong, convex, beneath concave; with 
longitudinal rows of concatenate ftars: gills crowded, 
abbreviated. 
Soland. and Ellis Corall. p. 159. tab. 45. 
Rumpf. Amb. 6. p. 248. tab. 88. fig. 2,3. 
Seba Muf. 3. tab. 311. fig. 3. 5. 
2. Seba Muf. 3. tab. 111. fig, 6. tab. 112. f£. 31- 
Inhabits the Indian Ocean. In the furrow along the middle is a 
line of ftars with their gills difpofed each fide in a radiate form ; 
under thefe each fide are 2 other rows of ftars, as lt were linked 
together, with their rays nearly parallel and pointing upwards 
and downwards: margin all round terminated by fharp erect 
laminz or gills, 
Crifatc.  Koliaceous, crefted, with rows of ftars impreffed in the 
centre; the foliations broad and flattiíh. 
Scland. and Ellis Corall. 9. 158. 2. 27. tab. 31. f. 3; 4- 
Inhabits the Z;Ziaz and Seutb Seas. 
Lacu. — Seffile, with large crowded frondefcent flars, the fronds 
perpendicular, waved and jagged. 
Soland. and Ellis Corall. 5. 158. z. 28. tab. 44. 
Seba Muf. 5. tab. 89. fig. 10. 
Inhabits the american Ocean? very rare. 
VOL. IV. — 41 Ficoides. 
