10 



The fifteen Echinoids in the present collection are as follows :— 



1. Phyllacanthus haculosiis (Lam.), A. Ag. 



2. Diadema saxatile, Linn. 



3. Echinothrix tm-camm, Eet. 



4. Astropyga radiata, Gray. 



5. Asthenosmna Ch-ubei, A. Ag. 



6. Echimmetra lucunter, de Blainv. 



7. Salmads bicolor, Agass. 



8. Salmacis Dussiimieri, Agass. 



9. Salmacis sulcata, Agass. 



10. Salmacis ghhator (Bell). 



11. Mespilia glohuhcs, Agass. 



12. Laganum depressum, Less. 



13. Laganum decagonale, de Blainv. 



14. Laganum sp. 



15. Lovenia subcarinata. Gray. 



The most noteworthy species in this collection are Asthenosoma Gruhei 

 and Salmacis glohator. 



A. Crruiei, of interest in itself as a specimen of a little known species, has 

 an additional claim to notice since its occurrence in the Mergui Archipelago 

 extends to the Indian Ocean the range of a species that was previously 

 known only from the Philippines and Dutch East Indies. 



Salviacis glohator has been recorded previously from Singapore and the 

 Pacific, but never from the Indian Ocean. 



1. Phyllacanthus baculosus (Lam.), A. Ag. 

 A. Ag., Rev. Ech., p. 388.' 

 Locality. — XXIX.,^ High Peaked Island, coral reef. 



A large specimen, 60 mm. in height and 75 ram. in diameter. Most of 

 the spines are of a very light-green coloui- banded with faint purple. 



Distributed from the Eed Sea, Zanzibar, ^lozambique, and Mauritius, 

 to Timor and the Philippines. 



2. Diadema saxatile, Linn. 

 A Ag., Rev. Ech., p. 274. 

 Localities. — III., Iron Island, shore pools; XIV. and XXIX., Bushby Island 

 and High Peaked Island, coral reefs. 



' References are given only to Agassiz's Revision, except in the case of species described 

 since the date of that work. 



^ These numbers refer to the Stations. 



