Echinoidea and Asteroidea from Mergui Archipelago. 27 



Three individuals were obtained, of which the largest is 32 mm. long 

 and 24 mm. broad. 



Its occurrence in the Mergui Archipelago extends the range of the 

 species, which was previously known only from the Philippines to China, 

 Japan, and the Sandwich Islands, and Dutch East Indies. Later it has, 

 however, been recorded from the Mozambique coast. 



ASTEROIDEA. 



Nineteen species of Asteroids were collected, including no new species 

 but many new records for the Mergui Archipelago, and, in some cases, for 

 the Indian Ocean. These collections have therefore not borne out Dr 

 Anderson's belief of " a reasonable expectation that a number of new species 

 may ultimately be found in the Mergui Archipelago." Dr Anderson 1 

 collected nine species, of which three were new. Of these nine species only 

 four occur in the present collection, or, at the most, five, if we can include 

 Astropecten Hemprichii, should it prove to be the same as A. mauritianus. 

 None of Anderson's new species are included in our collection. The total 

 number of Asteroids known from the Mergui Archipelago is therefore 24, 

 or possibly 23. In addition, a species of Culcita was frequently seen on 

 the coral reefs, but no specimen reached this country. 



The Asteroids in the present collection are as follows : — 



1. Archaster typicus, M. & T. 



2. Craspidaster hesperus (M. & T.), Sladen 



3. Astropecten mauritianus, Gray. 



4. Astropecten zebra, Sladen. 



5. Astropecten poly acanthus, M. & T. 



6. Luidia forcifer, Sladen. 



7. Luidia maculata, M. & T. 



8. Goniodiscus articidahhs (Linn.), Lutken. 

 9 Stellaster incei, Gray. 



10. Anthenea flavescens (Gray), Perr. 



11. Anthenea pentagonida (Lam.), Perr. 



12. Pentaceros granulosus, Gray. 



13. Pentaceros lincki (de Blainv.). 



14. Pentaceros superbus, Mobius. 



15. Pentaceros gracilis, Lutken. 



16. Palmipes rosaceus (Lam.), Duj. & Hupe. 



1 Jour. Linn. Soc. Lond. Zool, xxi. (1889,), pp. 319-331. 



