OF THE MERGUI ARCHIPELAGO. 



225 



Dr. Anderson tells me that these Alcyonaria grow just below 

 low-water mark, appearing at the surface at low tide. With 

 regard to the condition of the collection, most of the species are 

 represented by specimens in spirit, but the condition of some of 

 the dry specimens was decidedly unfavourable for study. 



List of Species. 



family Alcyokqd^:. 



1. Lobophyturn niadreporoides, n. sp. 



2. Spongodes aurora, n. sp. 



3. boletiforiiiis, n. sp. 



4. nigrotincta, n. sp. 



Family Gorgoniid^;. 



5. Plexaura indica, n. sp. 



6. Psamoiogorgia ? plexauroides, n. sp. 



7. Gtorgonia oppositipinna, n. sp. 



8. Gorgonella umbella, Esper. 



9. Juncella geminacea, Milne-Edwards Haime, var. 



10. fragilis, Ridley ?, var. 



11. Ctenocella pectinata, Pallas. 



12. Suberogorgia suberosa, Pallas. 



Family Meltth.eid^. 



13. Mopsella planiloca, n. sp. 



Family Alctoniidi. 



Lobophytum, Von Marenzeller. 



Guided by Yon Marenzeller's recent important paper on this 

 and allied forms (Zool. Jahrbiicher, i. p. 341, pi. ix.), I distinguisli 

 the following species as new to science. 



LoBOPHTTUii madreporoides, n. sp. (Plate XVII. figs. 7-11.) 



Corallum stipitate, with distinct pileus ; height of stalk in 

 young specimens about the same as its diameter immediately 

 under the pileus, irregularly shaped (angular), marked with 

 numerous shallow longitudinal grooves. Pileus extending be- 

 yond stalk to the extent of more than half the diameter of the 

 latter, incised at margin almost to stalk, margin much contorted ; 

 the centre occupied by erect digitate or palmate lobes. Upper 

 surface of pileus of shagreen-like appearance to the naked eye, 



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