The Echinoderma of the Indian Muséum. 
Part 1. — The Deep-Sea Ophiuroidea collected by the R.l.M.S. " Investigator.” 
By R. Koehler. Rs. lo. 
Part 11. — The Shallow-Water Ophiuroidea collected by the R.l.M.S. '‘Investiga- 
tor.” By R. Koehler. Rs. 4. (Illustrations.) 
Part 111. — The Deep-Sea Holothurioidea collected by the R.l.M.S. “ Investiga- 
tor.” By R. Koehler and C. Vaney. Rs. 16. 
Part IV. — The Littoral Holothurioidea collected by the R.l.M.S. “Investigator.” 
By R. Koehler and C. Vaney. Rs. 2. 
Part V. — The Deep-Sea Asteroidea collected by the R.l.M.S. “ Investigator.” 
By R. Koehler. Rs. 12 . 
