The Echinoderma of the Indian Muséum. 



Part I.— The Deep-Sea Ophiuroidea coUected by the R.I.M.S. " Investigator." 

 By R. KOEHLER. Rs. lo. 



Part II.— The Shallow-Water Ophiuroidea coUected by the R.I.M.S. "Investiga- 

 tor." ByR.KoEHi.ERi Rs. 4. (Illustrations.) 



Part III.— The Deep-Sea Holothurioidea coUected by the R.I.M.S. " Investigator." 

 By R. K0EHI.ER and C. VanEy. Rs. 16. 



Part IV.— The Littoral Holothurioidea coUected by the R.I.M.S. " Investigator." 

 By R. KoEHi^ER and C. Vaney. Rs. 2. 



