THE 



VOYAGE OF H.M.S. CHALLENGER, 



ZOOLOCtY. 



KEPORT on the Isopoda collected by H.M.S. Challenger during the Years 

 1873-76. By Frank Evers Beddard, M.A. (Oxon.), F.R.S.E., 

 F.R.M.S., F.Z.S., M.B.O.U., Prosector to the Zoological Society of 

 London. 



PART I.-THE GENUS SEROLIS. 



PREFACE. 



Among the Lsopoaa collected during the ChaUenger Expedition the genus Serolis 

 occupies a very prominent position both as regards number of specimens and of new 

 species; for this renson I have thought it advisable to separate Serolis from the rest of 

 the group, which will be treated of in the second part of my Report. 



As many as sixteen different species were collected during the voyage, of which nine 

 are new. One of these new species was named Serolis hromlei/aaa, and briefly described 

 by the late Dr. von Willemoes Suhm in his Preliminary Report on Crustacea observed 

 during the voyage of H.M.S. Challenger ;' the remaining eight have already been briefly 

 noticed by myself.^ 



Into the systematic part of this Report I have also introduced some account of the 

 remaining species of the genus that were nut obtained by tlie Challenger in order to make 

 the Report more complete. 



The portion which deals with the internal anatomy of Serolis is unfortunately very 

 incomj)lete ; the specimens were not very favourably preserved for anatomical investiga- 

 tion, auil 1 dill lint fri'l justified in using a great amount of material. 



" Proc. Roy. Soc. Land., vol. xxiv. p. 585, 1876. - Proc. Zool. Soc. Land., pt. iii. p. .330, 1884. 



(zooL. CH.vi.r,. Exr. — p.vrt. .xsxiii. — 1884.) Kk 1 



