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THE VOYAGE OF H.M.S. CHALLENGER. 
Measurements. 
In inches and 
decimals. 
In thousandths 
of total length. 
Total length from tips of eyes to tips of spines of telson, 
3-500 
On middle line : — 
From tip of rostrum to tip of telson, .... 
3-225 
1000 
Rostrum, ........ 
•150 
47 
Carapace, ........ 
•660 
205 
Carapace, including rostrum, ..... 
•810 
252 
From posterior edge of carapace to posterior edge of second thoracic 
somite, ........ 
From posterior edge of second to posterior edge of third thoracic 
•070 
22 
somite, ........ 
T45 
45 
From posterior edge of third to posterior edge of fourth thoracic 
somite, ........ 
T25 
39 
From posterior edge of fourth to posterior edge of fifth thoracic 
somite, ........ 
First abdominal somite, ..... 
•145 
45 
•255 
79 
Second abdominal somite, . . . ... 
•215 
67 
Third abdominal somite, ...... 
•220 
68 
Fourth abdominal somite, . . . . . . ' 
•220 
68 
Fifth abdominal somite, 
■280 
87 
Sixth abdominal somite, ..... 
•230 
71 
Telson on middle line, ...... 
■510 
158 
Length of free somites, ..... 
2-415 
749 
Total length on middle line, .... 
3-225 
1000 
Length of telson to tips of spines, ..... 
•620 
192 
"Width of carapace between antero-lateral spines, 
•340 
105 
Width of carapace (greatest), ...... 
■585 
181 
Width of second thoracic somite, 
•495 
153 
Width of third thoracic somite, 
•535 
166 
Width of fourth thoracic somite, 
•595 
184 
Width of fifth thoracic somite, 
•585 
181 
Width of first abdominal somite, 
•740 
229 
"Width of second abdominal somite, . 
•780 
242 
Width of third abdominal somite, 
•805 
250 
Width of fourth abdominal somite, 
•810 
251 
| Width of fifth abdominal somite, 
•810 
251 
V r idth of sixth abdominal somite, 
•690 
217 
Width of telson between postero-median spines, 
T30 
40 
Width of telson between postero-lateral spines, 
•470 
146 
Width of telson (greatest), 
•635 
197 
Total length of sixth abdominal appendage, . 
•426 
132 
Distance between tips of abdominal appendages, 
1-600 
496 
Length of paddle of exopodite of sixth abdominal appendage, 
•265 
82 
Length of base of exopodite of sixth abdominal appendage, 
•265 
82 
Length of endopodite of sixth abdominal appendage, . 
•408 
126 
Length of eye, .... 
•135 
42 
Width of eye, ....... 
Length of first antenna, measured from tip of rostrum, 
•095 
29 
•925 
287 
Length of flagellum of second antenna, 
•770 
239 
Length of scale of second antenna, 
•360 
112 
Distance from tip of rostrum to cervical suture, on middle line, 
■675 
209 
