THE 



VOYAGE OF H.M.8. CHALLENGES. 



ZOOLOGY. 



REPORT on the Crustacea Macrura collected by H.M.S. Challenger during 

 the Tears 1873-76. By C. Spence Bate, F.R.S., &c. 



PREFACE. 



The Crustacea Macrura brought home by the Challenger Expedition were placed in my 

 hands for examination and description by the late Sir C. Wyville Thomson, and the 

 progress of the work has gone on under Mr. John Murray, the present Director of the 

 Challenger Publications. The specimens, which were obtained by the dredge, trawl, 

 tow-nets, or by other means, number about 2000, and, arranged according to species and 

 locahties, are preserved in about 400 bottles. All these have been carefully examined, 

 the relative numbers of the sexes in most cases determined, and the anatomy and struc- 

 ture of one or more specimens of each species studied and figured, except where the 

 specimens were too few to allow of their being broken up and dissected. 



In making both the descriptions and drawings I have always felt that I was 

 dealing with specimens of more than ordinary interest, since they were in many 

 instances obtained from localities which are not likely to be again explored for some 

 time, and which are scattered over a vast area of the Atlantic, Pacific, and Indian 

 Oceans. Here I wish to express my indebtedness both to Mr. T. Wemyss Fulton, M.B., 

 of the Challenger Editorial Staff, and to Mr. J. C. Richards, the former for his aid in 

 watching the Report through the press, and the latter for his careful rendering of my 

 drawings on the stone. 



During the cruise, which lasted over three years and extended to some 70,000 miles, 

 Macrura were obtained at 140 of the 277 stations at which trawling or dredging took 

 place, in depths varying from 20 to 3000 fathoms, or, including those collected by the 

 tow-net, from the surface down to about four miles. 



(ZOOL. CHALL. EXP. — PART LII. 1888.) Ff f OS 



