THE 
VOYAGE OF H.M.S. 
CHALLENGER. 
ZOOLOGY. 
REPORT on the Brachyura collected by H.M.S. Challenger during the 
Years 1873-76. By Edward J. Miers, F.L.S., F.Z.S. 
INTRODUCTION. D 
The Collection of Brachyura obtained during the Expedition of H.M.S. Challenger 
contains a large number of new and very interesting types, which deserve perhaps a 
fuller treatment than it has been found possible to give to their description and illustra- 
tion. The groups assigned to me as Brachyura are those included in this group by 
Professors H. Milne Edwards and J. D. Dana, who may perhaps still be regarded as 
the leading authorities on the classification of the higher Crustacea, and the arrangement 
followed is, as regards the four principal subdivisions, that of those naturalists, although 
considerably modified as regards the minor groups. 
In the present Report no attempt has been made to enter into the anatomical or 
palaeontological affinities of the Brachyura, — subjects which it seemed to me should be 
left to those students of the group, who, by special training and experience, would be 
better qualified than myself to discuss them — but merely to furnish a systematic account of 
the numerous species collected, to amend and modify the classification where necessary, and 
to give lists as complete as possible, of the recent species of each genus, so far as these 
are not included in the works of MM. H. and A. Milne Edwards, Professor J. Bell, F.R.S., 
and others who have revised families or subfamilies of the Brachyura ; the numerous 
genera have also been redescribed on a uniform system, and it is thus hoped that the 
Report will prove, in the absence of any catalogue of the group, of assistance both to 
present and future systematists, and a useful supplement to the monographs of A. Milne 
Edwards (the first living authority upon this special group of the Crustacea), and to the 
(ZOOL. CHALL. EXP. — PART XL1X. 1886.) Ccc a 
