MATTHAI— RECENT COLONIAL JSTR^ID^ 91 



Ed. and H., which resembles Klunzinger's Favia cavernosa and belongs to the present 

 species. 



The three small specimens from Banda, referred by Quelch to Astrcea pandanus, 

 Dana, Astrcea doreyensis (Ed. and H.), and Astrcea speciosa, Dana, are identical with 

 Klunzinger's tjrpes of Favia tuhulifera and hence come under the present species. 



Localities. Maldives, Hulule (l). Minikoi (.3). Chagos : Salomon (3) ; Egmont 

 (1). Ceylon : Delft and Nainitavoe (small specimens). Also from Seychelles (Milne 

 Edwards and Haime) and from the E.ed Sea (Milne Edwards and Haime and Klunzinger) 

 ? East Indies (Dana), ? loc. (Esper). 



5. Favia abdita (Ellis and Solander). (PI. 9, fig. 5 ; 29, figs. 1 — 4 ; 35, fig. 2.) 



1786. Madrepora abdita, Ellis and Solander, Nat. Hist. Zooph., p. 162, pi. 50, fig. 2. 



1797. Madrepora favosa (pars), Esper, Forts. Pflanz., p. 34, pi. 45 a, fig. 2 (copy of Ellis). 



1816. Astrea abdita, Lamarck, Hist. Anim. sans vert., ii, p. 265 ; 2" edit., p. 415. 



1830. Favantrea magnifica, Blainville, Diet. Sci. Nat.,lx, p. 340; Manuel d'actin., p. 374, pi. 54, fig. 3 (1834). 



1833. Astrea abdita, Quoy and Gaimard, Voy. I'Astrol., Zooph., p. 205, pi. 16, figs. 4 — 5. 



1833. Astrcea fusco-viridis, Quoy and Gaimard, Voy. TAstroL, ZooL, iv, pi. 17, figs. 8 and 9. 



1834. Astrcea pentagona, Ehrenberg, Corall. roth. Meer., p. 96. 

 1834. Astrcea abdita, Ehrenberg, Corall. roth. Meer., p. 97. 



1846. Astrcea fusco-viridis, Dana, Expl. exp. Zooph., p. 228, pi. 11, fig. 7. 



1 1846. Astrcea (JissiceUa) magnifica, Dana, Expl. exp. Zooph., p. 231, pi. 12, fig. 3. 



1850. Prionastrea abdita, Milne Edwards and Haime, Ann. Sci. Nat., Zool., 3' ser., xii, p. 128. 



1850. Prionastrea magnifica, Mihie Edwards and Haime, Ann. Sci. Nat., Zool., 3"^ ser., xii, p. 129. 



1850. Prionastrea sulfurea, Milne Edwards and Haime, Ann. Sci. Nat., Zoo)., 3*= ser., xii, p. 130 = Astrea sulfurea, 



Valenciennes, Mss., Catal. Mus. Paris. 

 1 1850. Prionastrea quoyi, Milne Edwards and Haime, Ann. Sci. Nat., Zool, 3" ser., xii, p. 130. 

 1850. Prionastrea obtusata, Milne Edwards and Haime, Ann. Sci. Nat., Zool, 3" ser., xii, p. \30= Astrea obtusata 



Lamarck, Mss. 

 1850. Prionastrea crassior, Milne Edwards and Haime, Ann. Sci. Nat., Zool., 3"= ser., xii, p. 131 (non Prionastrcea 



crassior, Gardiner). 

 1857. Prionastrcea abdita, Milne Edwards and Haime, Hist. Nat. Corall., ii, p. 514. 

 1857. Prionastrcea crassior, Milne Edwards and Haime, Hist. Nat. Corall., ii, p. 515. 

 1857. Prionastrea magnifica, Milne Edwards and Haime, Hist. Nat. Corall., ii, p. 515. 

 1857. Prionastrcea obtusata, Milne Edwards and Haime, Hist. Nat. Corall., ii, p. 518. 

 1857. Prionastrcea sulfurea, Milne Edwards and Haime, Hist. Nat. Corall., ii, p. 518. 

 ? 1857. Prionastrcea quoyi, Milne Edwards and Haime, Hist. Nat. Corall., ii, p. 519. 

 1877. Prionastrcea sulfurea, Studer, Monat. Ak. Wiss. Berlin, p. 639. 

 1877. Prionastrcea robusta, Studer, Monat. Ak. Wiss. Berlin, p. 640. 

 1879. Prionastrcea gibbosa, Klunzinger, Korall. Roth. Meer., iii, p. 40, pi. 4, fig. 10. 

 1899. Prionastrcea abdita, Gardiner, Proc. Zool. Soc. London, p. 758, pi. 47, fig. 4. 

 1899. Prionastrcea fusco-viridis, Gardiner, Proc. Zool. Soc. London, p. 759, pi. 47, fig. 5. 

 1899. Prionastrcea purpurea, Gardiner, Proc. Zool. Soc. London, p. 760. 

 1899. Prionastrcea echinata, Gardiner, Proc. Zool. Soc. London, p. 760, pi. 47, fig. 6. 

 1904. Prionastrcea fusco-viridis, Gardiner, Fauna Geogr. Maldives and Laccadives, p. 787, pi. 64, figs. 43 



and 44. 



Corallum. Incrusting, following irregularities on surface of attachment, frequently 

 rising into irregular hillocks, sometimes with a corallite on top of each or more often 

 ending in a ridge, with corallites on either side. Corallites polygonal, varying greatly in 

 shape, often one side much higher than the other, hence with oblique calicular openings. 

 Corallite-walls fused, ridged, the inter-calicinal partitions thus formed varying from being 

 very thin up to 6 mm. thick, solid in section. Oalices varying considerably in diameter, 



12—2 



