80 



Haplodactyla australis, Semper. Tuticorin. 

 Holothuria atra, Jdger. Ramesvaram. 



,, niarmorata, Jdger. Ramesvaram. Edible Trepang. 



,, monacaria, Less. Ramesvaram. 



,, vagabunda, Selenka. Tuticorin. 



Synapta recta, Semper f Ramesvaram. 



Thyone sacella, Selenka. Ramesvaram. A specimen in the 

 Madras Museum shows the tentacles, teeth, 

 etc., which were ejected during life. 



CEUSTACEA. 



(Decapoda and Stomatopoda.) 



As regards the Crustacea (Decapoda and Stomatopoda) 

 Mr. J. E,. Henderson writes to me : 



*' This collection is one of the most important which has 

 ever been formed on the Indian coast. It contains over a 

 hundred and twenty species, not more than ten or twelve of 

 which are new to science ; but a number of rare or little-known 

 forms are present, and the geographical distribution of most of 

 these has been greatly extended by their discovery on the South 

 Indian shores. Upwards of three hundred species of Decapod 

 and Stomatopod Crustacea have been recorded from the Bay of 

 Bengal, which may be conveniently held to include the coasts 

 from Ceylon on the one side to Singaj ore on the other, along 

 with the numerous groups of islands situated within this area. 

 Yet, with the exception of a small collection from Madras report 

 on by Prof. Heller in the Crustacea of the ' Reise der Novara,' 

 our knowledge of the species which inhabit the Indian coast 

 proper is limited to a few scattered papers, and to those forms 

 recorded by the older writers under the somewhat vague localisa- 

 tion ' Indian Seas.' 



" The Crustacean fauna of the Culf of Manaar shows, as 

 might be expected, a considerable proportion of coral reef 

 species — widely distributed forms, which occur in suitable loca- 

 lities throughout the vast In do-Pacific region. The following 

 list does not include the new species, or a few which are still 

 unidentified. Those new to the Bay of Bengal (as defined 

 above) are marked with an asterisk." 



DECAPODA. 



Brachytjra. 



Oxyrhyncha. 



Doclea hybrida (Fabr.). 

 Hyastenus hilgendorfi, DeMan. 



