H0L0THTJRIANS OF THE MERGtTI ARCHIPELAGO. 



25 



DESCRIPTION OF PLATE I. 



Figs. 1-3. Paracyathus Andersoni. 1, side view, nat. size ; 2, a system of 

 septa and pali, magnified ; 3, costse, magnified. 

 4-6. P '. 'profundus. 4, side view, nat. size: 5, a half -system of septa 



and pali, magnified ; 6, costae, magnified. 

 7-9. P. indicus. 7, side view, nat. size ; 8, a system of septa and pali, 

 magnified; 9, costae, magnified. 

 10, 11. P. ccsruleus. 10, side view, nat. size; 11, a half-system of septa 



and pali, magnified. 

 12-14. P. merguiensis. 12, side view, nat. size ; 13, a half-system of septa 



and pali, magnified ; 14, costae, magnified. 

 15, 16. Polycyathus Verrilli. 15, part of a colony, nat. size ; 16, a coral- 

 lite, magnified. The pali are the outer knobs of the axial space. 

 17, 18. P. difficilis. 17, part of a colony, nat. size ; 18, a corallite, mag- 

 nified. 



19, 20. Goniastrcsa incrustans. 19, part of a colony, nat. size ; 20, a 

 calice, magnified. 



21,22. Solenastrcea (Quelchia) spongiformis. 21, the colony, nat. size; 



22, calices, magnified. 

 23, 24. Leptastrcea humilis. 23, calices, nat. size ; 24, a calice, magnified. 

 25, 26. Balanophyllia merguiensis. 25, coral, nat. size ; 26, part of a 



calice, magnified. 



27, 28. Dendrophyllia coarctata. 27, colony, nat. size ; 28, part of a 

 calice, magnified. 



29, 30. D. (Cce?iopsammia) affinis. 29, the colony, nat. size ; 30, a calice, 

 magnified. 



On the Holothurians of the Mergui Archipelago collected for 

 the Trustees of the Indian Museum, Calcutta, by Dr. John 

 Anderson, Superintendent of the Museum. By Professor 

 F. Jeffrey Bell, M.A., Sec. E.M.S. (Communicated by 

 Dr. John Anderson, F.B.S., F.L.S.) 



[Read 3rd June, 1886.] 



(Plate II.) 



The collection of Holothurians made by Dr. John Anderson, 

 though small, offers some points of interest, for it contains 

 an unexpectedly large number of undescribed species, of species 

 known to me before from one locality only, or forms that nave 

 as yet been seen only by those who described them, 



The recent publication of Dr. Kurt Lampert's comprehensive 

 monograph on the Holothuroidea * renders it unnecessary for me 



* Reisen &c. von Dr. C. Semper. II. iv. Die Seewalzen, von Dr. Kurt 

 Lampert: Wiesbaden, 1885. 



LINN. JOURN. — ZOOLOGY, VOL. XXI. 3 



