1888.] 



FROM TUTICORIN, MADRAS. 



389 



V. HOLOTHURIOIDEA^ 



98. Synapta beselii, Jdger. 



99. grisea, Semp. 



100. ■ recta, Semp. 



101. Chirodota rufescens, Brdt. 



102. Haplodactyla australis, Semp. 



103. Cucumaria assimilis, Bell. 



104. forbesi, Bell. 



105. Coloehinis armatus, Marenz. 



106. Ocnus javanieus, Sluiter. 



107. typicus, Theel. 



108. Thyone sacellus, ScL 



109. Pseudocucumis acioula, Senqj. 



110. Actinopyga echinites, Jdger. 



111. lecanora, Jdger. 



112. mauritiana, Q. cf' G. 



113. miliaria, Q. cj- G-. 



114. Holotliuria albida, BelP. 



115. Holothuria argus, Jdger. 



116. atra, Jdqer. 



117. cadelli, BelP. 



1 18. csesarea, Ludwig. 



1 19. fusco-cinerea, Jdger. 



120. imitaus, Ludwig. 



121. impatiens, Forsk. 



122. — — maculala, 2??-cZ#. 



123. marmorata, Jdger. 



124. monacaria, Less. 



125. ondaatjei, Bell. 



126. papillata, i?eZ^. 



127. pardalis, Sel.^ 



128. sjiinifera, Theel. 



129. Tagabunda, Scl. 



130. Sticbopiis chloronotus, Brdt. 



131. variegatus, Semper. 



If we bear in mind that our knowledge of the Echinodermata of 

 the Indian Ocean is still in a comparatively unsatisfactory condition, 

 or, in other words, remember that some of the species, such as 

 Frotnia tumida, Pectinura intermedia, Holothuria ondaatjei, which 

 are as yet known only from the Bengal Sea, may be found else- 

 where when a search is made for them, we can at present only con- 

 clude that we have here to do with representatives of the inter- 

 tropical fauna which extends across the Indo-Pacific area, and whose 

 limits appear to be marked by thermal lines'. 



1 Prof. Ludwig has lately published a list of the species of Holothurians 

 collected at Ceylon by Dr. P. and Dr. F. Sarasin (SB. Akad. Berlin, 1887, 

 pp. 1217-29). 



2 Prof. Ludwig considers this to be a synonym of H. edulis, Lesson. 

 ^ =H. scabra, Jager, teste Ludwig. 



* =H. insignis, Ludw., H. lineata, Ludw., H. peregrina, Ludw., teste Lud- 

 wig (;. c). 

 5 See ' Alert Report,' p. 174. 



Since this paper was read Dr. Herbert Carpenter and Mr. Sladen have read 

 to the Linnean Society an account of the Orinoids, Asterids, and Echinoids 

 collected at Mergui by Dr. Anderson. 



Dr. Carpenter informs me that the Crinoids were : — 



Antedon elegans, andersoni (sp. n.), milberti, conjungens (' Challenger '), 



spicata. 

 Actinometra notata (sp. n.). 

 Mr. Sladen tells me that the Asterids were : — 

 Archaster typicus. 



Astropecten andersoni (sp. n.), kemprichii, notograptus, sp. n. 

 Luidiaforficifer (Sladen, ' Challenger'), maculata. 

 GoniodLscus articulatus. 

 Nepanthia suffarcinata, sp. u. 

 Asterina cepheus. — 

 And the Echinoids : — 



Temnop letirus torcumaiicus, 

 Salmacis sulcata, diissumieri, bioolor. 

 Laganum depressum. 

 Arachnoidcs placenta. 

 I am greatly indebted to my friends for these lists, which bring up the total 

 of Echinoderms now known from the Sea of Bengal to 147 species. 



Proc. Zool. Soc— 1888, No. XXVII. 27 



