2l8 PAPERS FROM THE DEPARTMENT OF MARINE BIOLOGY. 



page of the 

 Plate 76. description 



Figs. I, la, 2. Acropora digitifera (Dana), from Murray Island. Fig. I, corallum, X 1/2; fig. la, a branch, 



X3' tis 2, branch nf another specimen, natural size ■ '75 



Figs 3, 3a, 3*. Acropora ocellata (Klunzinger) var., from Cocos-Keeling Islands. Fig. 3, corallum, natural 



size; fig. 3a, part of upper surface, X3; fig- 3*, apical corallite, X8 177 



Plate 77.— Acropora gemmifera (Brook), from Murray Island. 



Fig 1 Corallum, X1/3; fig- ia, branches of same specimen, natural size. . «77 



Fir, 2 Fig. 2, corallum, X1/3; fig- 2a, branches of same specimen, natural size 177 



Fig. 3. Fig. 3, corallum, X1/3; fig- 3«> branch of same specimen, natural size '77 



Flate 78.- Acropora palifera (I.amarck), Dana's type of Madrcpora labrosa, No. 315. U. S. Nat. Mus. 



Fig. 1. General view of part of corallum, natural size ' 



Fig. ia. Summit calices, X4 o 



Fig. lb. Lateral calices near the summit, X4. • ' 



Figs, ic, id. Lateral calices nearer base of specimen, X4 



Plate 79. — Acropora palifera (Lamarck). 



178 



Fig. I. Specimen from Cocos-Keeling Islands ■■ ■ ■■■ ■ ' 



Figs 2, 3. Variety a (Brook). Specimens, one-half natural size, from Murray Island 17» 



Figs. 4, ±a, ±b. Variety a (Brook). Three views of same branch from Murray Island. Fig. 4. part of 



surface, X2; fig. 4a, calices near apex of branch, X2; fig. 4*, apical corallite, X2 I7» 



Plate 80. 



Figs, i, la, lb. Acropora plicata (Brook), from Murray Island. Fig. 1, corallum, X 1/2; fig. la, part of a 



branch, X2; fig. lb, apical corallite, X2 •■ •■■■•••; ,' ', , ' 79 



Figs - 3, 3a, 3*. Acropora variabilis (Klunzinger), from Cocos-Keeling Islands. Fig. 2, a branch, natural 

 size. Figs. 3, 3a, ib, varietal form. Fig. 3, corallum, about 1/3 natural size (photograph from 

 Dr. Wood Jones); fig. 3a, a branch, natural size; fig. 3*, the same branch, X3 lSl 



Plate 8 1 .— Ac ropora polymorpha (Brook), specimens from Fanning Island. 



Figs i 2 3 Views of three coralla, to show variation, each one-half natural size ■■■■■■ " 8 ° 



Figs 4, c Two branches, each X2. The specimens represented by figs. 1 and 4 closely resemble the 

 specimen labeled Madrcpora abrotanoides by Dana, which was referred to M. polymorpha by 



r> , l8 ° 



Brook 



Plate 82. 

 Figs i, ia, lb. Acropora murrains, new species, from Murray Island. Fig. I, corallum, natural size, 



fig. ia, a branch terminal, X3; fig- lb, apical coralhtes, X3 • ■ • ■ ■ ■ • • • ■ - ■ ■ ■ ■ ■ ' Ibi 



Figs. 2, 2a, 2a. Acropora rosaria (Dana), Dana's type of Madrepora rosaria. No. 281, U. S. Nat. Mus. 



Fig. 2, corallum, X1/2; fig. 2a, branch terminal, X3; fig- 2b, apical corallite, X8 «»4 



Plate 83. 

 Figs I ia, lb, ic, id. Acropora syringodcs (Brook), from Murray Island. Fig. I, corallum, X1/2; figs, ia 



and lb, branches, natural size; fig. if, a branch, X3; fig- ^ apical coralhtes, X3 ■ ■ ■ • >»S 



Figs. 2, 2a, lb. Acropora squarrosa (Ehrenberg), from Murray Island. Fig. 2, corallum, X1/2; tigs. 2a 



and lb, two branches, each natural size ' + 



Plate 84. 

 Figs, i, 2. Gomopora tenuidens (Quelch), from Murray Island. Fig. 1, deep calices and rather small pali, 



X4; fig- 2, shallow calices and large, thick pah, X4 •■ ■ • ' •; ' , * 



Figs. 3,3a. Pontes solida (Forskal). Fig. 3, corallum, about 5 ,'9 natural size (photograph from Dr. W ood 



Jones); fig. 3a, calices, X8 • • -. ■ .■•■.''■ 9 



Figs. 4, 4 a, ±b, 5. Porites murrayensis, new species. Fig. 4. corallum, natural size; fig. 4a, summit calices, 



X8, pali weakly developed; fig. 4*. calices near the edge, X8, pah well developed, fig. 5. 



calices of another specimen, X8 



Plate 85. 



Figs i, ia, 2, 2a, 3 Porites lobata Dana. Fig. 1, corallum, natural size; fig. ia, calices, X8, of Dana's 

 type of Porites favosa, No. 672, U. S. Nat. Mus. Fig. 2, corallum, natural size; fig. 2a, calices, 

 X8, of Porites lobata forma centralis Vaughan, specimen from Fanning Island. Fig. 3, calices, 

 X8, of another specimen of the same "forma," from Fanning Island • '9 2 



Figs 4, 4a, 5, 6, 6a. Porites australiensis, new species, from Murray Island. Fig. 4, calices, X8, separated 

 by rather wide walls; fig. 4a, calices, X8, separated by narrow walls, different areas on the 

 same specimen, the holotvpe of the species. Fig. 5, calices, X8, separated by narrow walls; 

 pali, plate-like. Fig. 6, corallum, natural size; fig. 6a, calices, X8, specimen with smaller 



,- 194 



calices 



