26 
THE VOYAGE OE H.M.S. CHALLENGER, 
Measurements. 
In inches and decimals. 
In thousandths of total length. 
No. 1. 
No. 2. 
No. 3. 
No. 4. 
No. 5. 
No. 1. 
No. 2. 
No. 3. 
No. 4. 
No. 5. 
Total length from tip of rostrum to tip of telson, 
5-48 
5 ’05 
4-26 
2-56 
5-53 
Rostrum, 
■14 
•14 
•13 
•09 
•14 
■026 
•028 
•031 
•35 
•026 
Carapace, 
118 
1-13 
■97 
•53 
1-17 
•215 
•223 
•228 
■207 
•219 
Carapace including rostrum, .... 
1-32 
1-27 
1-10 
•62 
1-31 
•241 
2-51 
•259 
•242 
•245 
From posterior edge of carapace to posterior edge of 
second thoracic somite, ..... 
•20 
16 
•13 
■10 
■20 
•056 
•032 
•031 
•040 
■037 
From posterior edge of second thoracic to posterior 
edge of third thoracic somite, .... 
•20 
•17 
•13 
•10 
•20 
•056 
■034 
•031 
■040 
•037 
From posterior edge of third thoracic to posterior 
edge of fourth thoracic somite, .... 
•26 
•20 
•18 
■12 
•24 
•067 
■040 
•042 
•048 
•035 
From posterior edge of fourth thoracic to posterior 
edge of fifth thoracic somite, .... 
•26 
•20 
•18 
•12 
•24 
•067 
•039 
■042 
•048 
■035 
First abdominal somite, 
•43 
•37 
•27 
•20 
■45 
•078 
•073 
•065 
■079 
•085 
Second abdominal somite, 
•36 
•36 
•27 
•20 
■40 
•066 
■071 
•065 
•079 
•075 
Third abdominal somite, 
•36 
■36 
•27 
•18 
•40 
•066 
•070 
•065 
•070 
•075 
Fourth abdominal somite, 
•38 
•36 
•31 
•16 
•43 
•069 
•070 
•073 
•064 
•080 
Fifth abdominal somite, ..... 
•50 
•42 
■35 
•22 
•47 
•091 
•082 
•082 
■070 
•08S 
Sixth abdominal somite, 
•36 
•34 
■28 
■16 
•31 
■066 
•066 
■066 
■064 
•058 
Telson on middle line, 
•85 
•84 
•79 
•38 
•88 
■155 
■184 
•186 
•160 
•165 
Total length of hind body 
4'16 
3-78 
3-16 
1-94 
4-22 
•837 
•761 
•748 
•762 
•770 
Total length on middle line from tip of 
rostrum to tip of telson, 
5-48 
5-05 
4-26 
2-56 
5-53 
1-078 
1-012 
1-007 
1-004 
1-015 
Greatest length of telson, ..... 
1-08 
•96 
•92 
•46 
1-12 
•199 
•190 
•216 
•179 
•207 
Width of carapace at antero-lateral angle, 
•62 
•57 
•52 
•28 
•64 
•113 
•114 
•122 
•109 
■120 
Width of carapace at postero-lateral angle, 
•96 
•90 
•84 
•44 
1-00 
•175 
•180 
•197 
•172 
•187 
Width of second thoracic somite 
•92 
•82 
•76 
•90 
■168 
■164 
•178 
•168 
Width of third thoracic somite, .... 
•97 
•88 
•74 
•96 
•177 
•176 
•174 
•184 
Width of fourth thoracic somite, .... 
•98 
•92 
•78 
■45 
1-00 
•179 
•194 
•183 
•176 
•187 
Width of fifth thoracic somite, .... 
■92 
■90 
•76 
■92 
•168 
•180 
•178 
•172 
Width of first abdominal somite, ... 
1-12 
1-05 
•89 
•50 
1-20 
■204 
•210 
•209 
•195 
•224 
Width of second abdominal somite, 
1-20 
1-21 
•219 
•233 
Width of third abdominal somite, . ... 
1-22 
1-24 
•223 
•233 
Width of fourth abdominal somite, 
1-24 
1-25 
•226 
•224 
Width of fifth abdominal somite, ... 
1-24 
1-20 
1-02 
■59 
1-26 
•226 
•238 
•240 
•231 
•226 
Width of sixth abdominal somite, .... 
1-10 
1-02 
•88 
•48 
1-11 
■201 
■202 
•207 
■187 
•208 
Width of telson between postero-median spines, 
•32 
•30 
•24 
•12 
•30 
•058 
•059 
•056 
•047 
•056 
Width of telson between postero-lateral spines, 
•83 
•88 
•80 
•30 
•90 
•151 
■174 
•188 
•117 
•168 
Width of telson (greatest), .... 
1-10 
1-04 
•90 
•49 
1-10 
■201 
•206 
■211 
•191 
•206 
Total length of first antenna, .... 
2-40 
2-40 
1-80 
•438 
•475 
•336 
Length of scale of second antenna, ... 
■84 
•74 
•66 
•38 
•153 
•147 
•155 
•148 
Length of eye, 
•24 
•24 
•044 
■045 
Width of eye, 
•30 
•25 
•055 
•047 
Squilla quinquedentata, n. sp. (PL I. fig. 3 ; PL II. fig. 6). 
Diagnosis . — Dactylus of raptorial claw with five teeth, including terminal one. Free 
somites of hind body with submedian dorsal carinse, which are absolute in the four 
exposed thoracic and the first four abdominal somites, as are also the next pair in the 
thoracic and first three abdominal somites. Appendages of exposed thoracic legs slender. 
Lateral margins of first three exposed thoracic somites bilobed. 
General Description . — .Rostral plate nearly rectangular, a little longer than wide, 
with antero-lateral angles rounded, and lateral edges raised into ridges or marginal 
