x TRANSLATOR'S PREFACE 



edition the accelerating pace of deep-sea research has extended our knowledge 

 of the Pogonophora. New species have come to light, more is known of the 

 geographical distribution of the group, the animals have been observed alive 

 and more is known of their biology. Inclusion of this new material has pro- 

 duced a book which is half as long again as the original. 



The greater part of the new material was provided by Professor Ivanov, 

 who besides sending me descriptions of new species for inclusion in this 

 edition also provided a copiously annotated copy for the purpose of the 

 translation. Besides this the greatest contribution has been made by Dr. Eve 

 C. Southward, working at the Plymouth Laboratory of the Marine Biolo- 

 gical Association of the United Kingdom. She has provided the description 

 of one new species and has sent me extensive notes on her observations on 

 both living and dead material. In addition, I have drawn upon her recently 

 published work and in particular upon the results of her re-examination of 

 the original material collected in the East Indies by R.V. Siboga, material 

 upon which was based the first description of a pogonophore. Amongst other 

 authorities whose work has contributed towards this edition I would single 

 out Dr. Olga Hartman, who has lent a set of original drawings for reproduc- 

 tion here and has allowed me to print a modified description of Siboglinum 

 veleronis Hartman. 



Though the basis of the translation has been the annotated copy, which 

 thus differs in many minor ways from the published version of the Russian 

 original, the author and I have nevertheless felt it desirable to indicate in 

 some way the additional material, wherever feasible, by enclosing it in square 

 brackets, whatever its source. The illustrations have retained their original 

 numbers and additional figures have been interpolated with a prefixed letter 

 (for example, the new figure A133 will be found after Fig. 133). New tables 

 have been inserted with the same convention, but where pre-existing tables 

 have been enlarged I have given no indication. Except where an acknowledge- 

 ment is given in the legend, additional figures have been drawn by Professor 

 Ivanov. 



I have transliterated proper nouns from the Russian according to the 

 proposals put forward by the Royal Society, though at a late stage in proof- 

 correcting I have noticed some inconsistencies which were not worth 

 altering. This adherence to the Royal Society system has had the unfortunate 

 result that it is not immediately obvious, for example, that Diplobrachia 

 belajevi has been named after Dr. G. M. Belyaev. Geographical names have 

 not been transliterated (it is difficult to identify Trezhuri Island with 

 Treasury Island, at least in print). Localities have instead been named 



