CORALS FROM MURRAY, COCOS-KEELING, AND FANNING ISLANDS. 215 



Plate 50. page of the 



description 

 Figs, i, la, ib. Mussa sinuosa (Lamarck), from Murray Island. Fig. i, view of side, natural size; fig. la, 



calices, natural size; tig. \b, calices, X2 123 



Figs. 2, la. Acanthaslrea echinata (Dana), two views of Dana's type of Ailrcea echinata. No. 25, U. S. Nat. 

 Mus. Fig. 2, part of upper surface, X2; fig. 2a, longitudinal section of corallites, X2 (view, 

 natural size, plate 51, fig. i) 125 



Pl.^te 51. 



Figs, i, 2. Acanllmstrea echinata (Dana). Fig. i, Dana's type of Astrcta echinata. No. 25, U. S. Nat. Mus., 

 upper surface, natural size (enlarged views, plate 50, figs. 2, 2a). Fig. 2, variety of the species 

 from Murray Island, X2 125 



Figs. 3, 3a, ih. Herpetolitha stricta Dana. Three views of Dana's type. No. 161, U. S. Nat. Mus. Fig. 3, 

 upper surface, natural size; fig. 3a, lower surface, natural size; fig. ^b, costs of lower surface, 



X6 I2g 



Plate 52. — Merulina ampliata (Ellis and Solander). 



Figs, i, la, ib. Three views of the same specimen, from Torres Strait. Fig. i, upper surface, X1/3; fig. la, 



lower surface, X1/3; fig. lb, part of upper surface, natural size 127 



Plate 53. 



Figs, i, la. Herpetolitha crassa Dana. Fig. I, upper surface; fig. la, lower surface, both natural size, of 



Dana's type of Herpetolithus crassus. No. 160, U. S. Nat. Mus I2q 



Plate 54. 



Fig. I. Herpetolitha crassa Dana. Specimen from Cocos-Keeling Islands, X 1/2 129 



Fio. 2. Polyfhyllia talpina (Lamarck). Specimen from Murray Island, X1/2. . 130 



Figs. 3, 3a, 4, 4a. Pachyseris speciosa (Dana). Fig. 3, view natural size; fig. 3a, view, X5, of Dana's 

 type of Agaricia speciosa. No. 199, U. S. Nat. Mus. Fig. 4, view, natural size; fig. 4a, view, 

 X3, of a specimen from Murray Island Ijl 



Plate 55. 



Figs, i, la. Pachyseris torresiana, new species. Fig. i, general view of corallum, natural size; fig. la, part 



of surface, X3 132 



Fig. 2. Pavona danai (Milne Edwards and Haime), X2, specimen from Cocos-Keeling Islands 136 



Plate 56. 



Figs, i, la. Pavona cactus (Forskal). Two views of a frond of Pamna formosa Dana, No. 135, U. S. Nat. 



Mus. Fig. I, natural size; fig. la, X2 Ij6 



Figs. 2, 2a. Pavona danai (Milne Edwards). Two views of type of species, Pavonia boletiformis Dana, 



No. 136, U. S. Nat. Mus. Fig. 2, natural size; fig. 2a, X 2 136 



Fig. 3, 3a, 3i. Pavona maldisensis (Gardiner), specimen from Cocos-Keeling Islands. Fig. 3, corallum, 



natural size; fig. 3a, calices near edge of corallum, X6; fig. 3^, summit calices, X6 138 



Plate 57. — Pavona varians Verrill. 



Figs, i, la. Specimen from Murray Island; calices in short, circumscribed series. Fig. i, natural size; 



fig. la, calices, X4 138 



Figs. 2, 2a. Specimen from Murray Island; calices in longer series than in specimen represented by figs. 1 



and la, with which it intergrades. Fig. 2, natural size; fig. 2a, X4 138 



Fig. 3. Specimen from Cocos-Keeling Islands (photograph, natural size, from Dr. Wood Jones); but the 



same growth facies is present at Murray Island. It intergrades with the facies represented by 



figs. 2 and 2a 158 



Figs. 4, 4a. Specimen from Fanning Island. The interserial crests are tall, but it intergrades with the 



facies represented by fig. 3. Fig. 4, corallum, natural size; fig. 4a, collines and scries, X4. . 138 



Plate 58. — Cceloseris mayeri, new genus and species. 



Figs, i, la, ib. Three views of same specimen. Fig. I, corallum, natural size; fig. la, summit calices, X4; 



fig. lb, calices near edge, X4 139 



Fig. 2. Longitudinal section of corallites, X4 139 



Figs. 3, 3a. Photomicrographs of a thin section. Fig. 3, X 20; fig. 3a, X 30 139 



