THE STONY CORALS OF THE PORTO RICAN WATERS. 
305 
Genus MANICINA Ehrenberg, 1834. 
Manicina areolata (Linn.). PI. iv, figs. 2 and 3. 
1758. Madrepora areolata, Linnseus, Syst. Nat., ed. x, p. 795. 
1789. Madrepora mxandrites (pars), Esper, Pflanzenth.jp. 76 (bis = 81) -84, pi. iv, non iv A. 
1815. Mseandra areola, Oken, Lehrb. Naturgesch., Bd. I, p. 70. 
1816. Mseandrina areolata, Lamarck, Hist. Nat. Anim. s. Vert., t. II, p. 247. 
1834. Manicina liispida, Ehrenberg, Cor. Roth. Meer., Abhandl. K’gl. Akad. Wiss. Berlin for 1832, p. 327. 
1834. Manicina prserupta, Ehrenberg, op. sup. eit., p. 327. 
1834. Manicina manica, Ehrenberg, op. sup. cit., p. 327. Non Manicina areolata Ehrenberg = TrachypliyUia geoffroyi 
(Audouin),/i(ie Milne-Edwards & Haime. 
1849. Manicina valenciennesi, Milne-Edwards & Haime, Ann. Sci. Nat., 3i0me s6r., Zool., t. xi, p. 287. 
1861. Manicina crispata, Duehassaing & Michelotti, M6m. Corall. Ant., p. 74 (of reprint), species of Milne-Edwards & Haime. 
1861. Manicina danai, Duehassaing & Michelotti, op. sup. cit., p. 74, species of Milne-Edwards & Haime. 
1871. Manicina areolata, Pourtalfes, 111. Cat. Mus. Comp. Zool., No. iv, p. 72. 
1880. Manicina areolata, Pourtal&s, Mem. Mus. Comp. Zool., vol. vil, No. 1, pi. v. figs. 1-22 (all figs.), and pi. vi, figs. 1-7 
(all figs.). 
1888. Manicina areolata, Wilson, Jour. Morph., vol. ii, No. 2, pp. 191-252, pis. i-vii. 
1895. Manicina areolata, Gregory, Quart. Jour. Geol. Soc. Lond., vol. LI, pp. 264-265. 
1895. Manicina pliocenica, Gane, Johns Hopkins Univ. Circ., vol. xv, No. 121, p. 10. 
1900. Manicina pliocenica, Gane, Proc. U. S. Nat. Mus., vol. xxii, pp. 192,193. ✓ 
1900. Manicina areolata, Vaughan, Mon. U. S. Geol. Surv., No. xxxix, pp. 38-40 pi. i, figs. 2,3. 
The types of Ehrenberg’s species were studied in the Museum fur Naturkunde, in Berlin, and 
the specimens of Duehassaing & Michelotti were studied in Turin. Gane’s Manicina pliocenica is placed 
in the synonymy of M. areolata, as a result of comparison of his type material with recent specimens in 
the U. S. National Museum. 
From Ensenada Honda, Mayaguez, and Aguadilla, a single specimen from each place. Those 
from Mayaguez and Aguadilla are small and beach-worn. The one from Ensenada Honda is good, and 
was preserved in alcohol. Station 6079, off St. Thomas, Sail Rock, in 20 to 23 fathoms. 
Genus PLATYGYRA Ehrenberg, 1834. 
1815. Mseandra (pars), Oken, Lehrb. Naturgesch., pp. 68 and 70. 
1816. Meandrina (pars), Lamarck, Hist. Nat. Anim. s. Vert., t. ii, p. 244. 
1834. Mseandra (pars) ( + subgenus Platygyra (pars)) Ehrenberg, Cor. Roth. Meer., Abhandl. K’gl. Akad. Wiss. Berlin for 
1832, p. 323. 
184S. Meandrina (pars), Dana, Zooph. Wilkes Expl. Exped., p. 252. 
1848. Meandrina + Cseloria, Milne-Edwards & Haime, Comptes Rendus, t. xxvii, p. 493. 
1857. Mseandrina, Milne-Edwards & Haime, Hist. Nat. Corail., t. ii, p. 388 -t- Cceloria, ibid, p. 411. 
1884. Mseandrina, Duncan, Jour. Linn. Soc. Loud., vol. xvm, p. 88. 
The names Meandrina and Mxandra have been disposed of. The name Platygyra, Ehrenberg 
remains to be considered. Ehrenberg placed the following species in the subgenus (as recognized by 
him), viz: labyrinthica, including the varieties a leptochila and (i pachychila ; lamellina, sp. nov. ; 
cerebriformis Lamarck, including the varieties a and fi ; plirygia Lamarck; spatiosa , sp. nov. I made a 
careful study of most of the original specimens referred to these species by Ehrenberg. 
There are six specimens in the Museum fur Naturkunde, in Berlin, bearing the name Mseandra 
( Platygyra ) labyrinthica, but there appear to be four distinct species. 
1. Specimens Nos. 682, 683, and 687 are Cceloria labyrinthiformis of Milne-Edwards & Haime. 1 
2. Specimen No. 668, var. pachychila Ehr. = Cceloria forskselana Milne-Edwards & Haime. 2 
3. Specimen No. 669. No locality is given. U M. filograna Esp.” is written on the label below 
the name given by Ehrenberg. The corallum is a head deformed by certain parts dying; it is about 
160 mm. high. The valleys are very long and sinuous, frequently forming sharp angles in the sinuos- 
ities. Wall between the series thin and acute at top, thickening below. Depth of valleys 6.5 to 7 mm. 
Cross section of colline angular above. Septa, 12 to 15 cm., nearly all of equal size, only occasionally 
a small or rudimentary one between a pair of large ones; they do not project much above the wall 
between the valleys. The septal dentations are subequal, except that the lowest is often much larger 
than the others. The columella is formed of septal trabeculae and lobes; it is very often of a loose, 
spongy texture. This is not filograna Esper, but is probably viridis Le Sueur ( =strigosa Dana). 
4. Specimen No. 671, bears “ M. grandilobata M. E.” on the label below Ehrenherg’s name. 
This is correct, only it must now be called clivosa of Ellis & Solander. 
I did not study M. Platygyra lamellina. 
i Hist. Nat. Corall., t. n, p. 413. 
2d— E. C. B. I960— 20 
-Hist. Nat. Corall.,. t. ii, p. 414. 
