156 Proceedings of the Royal Physical Society. 



one of the first expeditions in which a diver has been employed to make 

 zoological collections, and the success of the method, even more in other 

 groups than in Echinoderms, should commend it to others " (p. 21). 



Unfortunately, in some cases a species is represented by a single 

 individual. With the exception, however, of some specimens of the genus 

 Trichaster, every example in the collection has been identified. In this 

 connection, special reference ought to be made to Professor Koehler's paper 

 on " Ophiures nouvelles ou peu connues," in the Mimoires de la Soctitt 

 Zoologique de France for 1904, which has been most useful in the identification 

 of individuals belonging to the difficult group of the Ophiothricidae, which 

 are here represented by nine species. 



It is remarkable that there are no Ophiuroidea in the collection from the 

 neighbourhood of the Moskos Islands, though examples of both Echinoidea 

 and Asteroidea were found in that locality (Brown, 1910). 



I desire to express my heartiest thanks to Mr Simpson and to Dr 

 Eudmose Brown for entrusting this collection to me for examination. I also 

 desire to thank Professor Koehler for his kindly interest in the work, and for 

 his very generous assistance in identification ; and Dr J. H. Ashworth, of 

 Edinburgh University, for much guidance in connection with literature 

 bearing on the subject. My especial thanks are due to Professor J. Cossar 

 Ewart for his courtesy in affording me facilities for the examination of this 

 collection in the Zoological Laboratory of the University of Edinburgh. 

 Some literature required for reference, not available in Edinburgh libraries, 

 I was enabled to purchase by means of a grant kindly given me by the 

 Carnegie Trustees. 



II— LIST OF SPECIES. 

 OPH IU ROI DEA. 

 1. ZYGOPHIURiE. 

 Family Ophiodermatid^e. 



(1) Pectinura gorgonia Liitken, p. 157. 

 Family Ophiolepidid^. 



(2) Ophioglypha sinensis Lyman, p. 158. 

 Family Ampiiiuhid/e. 



(3) Ophiactis savignyi Muller et Troschel, p. 159. 

 Family Ophiocomiiu;. 



(4) Ophiocoma scolopendrina (Lamarck), p. 160. 



(5) Ophiocoma valenciae Muller et Troschel, p, 160. 



(6) Ophiomastix venosa Peters, p. 161. 



