EXPLANATION OF PLATKS. 



PLATE I. 

 Fie. 1. Sarcophytum aberrant, n. sp. STALKED CoLONT without basal attachment. Slightly en 1 



,, 2. Sttrcophytwn aberrans, n. sp. ENCRUSTING COLONY, (a) portion enlarged ( x I. 1 ,), showing part 

 of the spiral bare streak, at one place the cojnenchyma overarching it, at another the 

 co3nenchyma completely surrounding the support; (/>) distal end of an autozooid showing 

 the arrangement of the pinnules on the tentacles; (c) colony reduced (f s n. a.) in size 

 showing the incrusting habit ami the projecting siliceous support. 



,, 3. Sarcopli i/fum agaricoides, n. sp. (Nat. size.) Note the characteristic auto/.ooids ; the siphono- 

 zooids (represented by white spots) are much more numerous than in the figure. 



4. Spongodes alcocki, n. sp. ( x 15). Two polyps showing the single projecting spicule of the 

 Stiitzbiindel. 



5. Paratjorgia splemle ns, n. sp. (Nat. size.) Note the characteristic clusters of atitoxooids. 



6. Keroi-ides Icoreni, Wright and Studer ( x 10). Small portion of a twig. 



,, 7. Keroiiides Icoreni, Wright and Studer. Colony nat. size. 



,, 8. Muricella bengalensis, n. sp. Small portion enlarged ( x 20). Note the largo size of the 

 spicules of the coeneuchyma. 



,, 9. Pleurocorallium variabile, n. sp. Small portion enlarged ( x 8) showing the arenaceous 

 co3nenchyma and the stellate appearance of the retracted polyps. 



,, 10. Juncella elongata, Pallas. Small portion enlarged ( x 4). 



PLATE II. 



FIG. 1. Staclujodes allmani, Wright and Studer. Axis of a colony to show mode of branching. (Nat. 



size.) 



2. Acanthogorgia aspera, Pourtales. Colony nat. size. 

 ,, 3. Chnjsogorgia flexilis, Wright and Studer. Colony showing branching and arrangement of 



polyps. 



,, 4. Chrysogorgia irregularix, n. sp. Part of a colony to show the indefinite mode of branching. 

 5. (a 'and V) Stachyodes allmani, Wright and Studer. Obverse and reverse views of a small 



portion of a twig enlarged. 



,, 6. Sympodium indicum, n. sp. Portion enlarged showing burrowing polycluut worm. 

 ,, 7. Sympodium incrustans, n. sp. Part enlarged to show the furrowing of the polyps and also 



stages in retraction. 



PLATE III. 



Fro. 1. Protoptilum medium, n. sp. Part enlarged. Note the irregular margins of the calyces. 

 ,, 2. Thouarella moseleiji, var. spieata, n. Portion of colony nat. size showing the mode of 



branching. 

 3. Paramuricea indica, n. sp. Part enlarged to show the markedly spinose character of the 



coenenchyma. 

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