276 



TABI.B 



Measurements of Caridina nilotica (Roux) 



I/cngth from tip of rostrum to tip of telson in 

 millimetres 



Toothing-formula of the rostrum 



Rostrum longer > , or shorter < than the sca- 



phocerites 

 Rostrum longer > , or shorter < than the 



carapace 

 Proportion between the length of the toothed 



and of the unarmed part of the upper margin 

 L-ength of carpus . . . , . . . . ^ 



Breadth of carpus 

 Proportion between length and breadth of 



carpus 

 Ivcngth of chela 

 Breadth of chela . . 

 Ivcngth of fingers . . 

 Proportion between length of fingers and that 



of palm 

 Proportion between length and breadth of chela J 

 Ivcngth of carpus . . . . . . . , ~^ 



Breadth of carpus at distal extremity 



Proportion between length and breadth of carpus 



lycngth of chela . . 



Breadth of chela . . 



Ivcngth of fingers . . . . ^ 



Proportion between the length of fingers and 



that of palm 

 Proportion between length and breadth of chela J 



bJD 



r c3 



c3 



^ 



I/Cngth of propodite 



Breadth of propodite in the middle . . 



Proportion between length and breadth of pro- 

 podite 



Length of dactylus 



Proportion between length of propodite and 

 that of dactylus 



Breadth of dactylus 



Proportion between length and breadth of dac- 

 tylus 



Number of spines of dactylus, terminal claw 

 included . . . . , . . . J 



IvCngth of propodite . . . . . , -^ 



Breadth of propodite in the middle 



Proportion between length and breadth of 

 propodite 



Ivcngth of dactylus 



Proportion between length 

 that of dactylus 



Breadth of dactylus 



Proportion between length and breadth of 

 dactylus 



Number of spines of dactylus, terminal claw 

 included . . . . . . . . J 





of propodite and ^ v-. 



10 



No. I 



19 



2l2+ I 



17 



slightly 



> 

 slightly 



> 



1-65 

 0-84 

 0-48 



175 



I-I2 



0-56 



0-66 



1-5 



2 



1-46 



0-335 



4-36 



i-i8 



0-5 



078 



1-95 

 2-36 



1-88 

 0-146 



13 

 0-51 



37 



0-12 



No. 2 No. 3 



i8-5 

 172+ I 



slightly 



> 

 slightly 



< 



1-32 

 0-82 



0-54 

 1-52 



1-2 

 0*67 



o"64 



ri6 

 1-8 

 1-42 

 0-38 



37 

 I 18 

 0-58 

 078 



195 

 2 



1-8 

 0-15 



12 

 0-52 



lb 



1 62 + I 



12 

 slightly 



> 

 slightly 



> 



1-24 



1-82 

 0-124 



147 



0-5 



3-64 

 0-124! o-ii 



3-6 



4-25 4-2 



8 



2-o8 



0-12 



0-6 

 3-46 



0-12 



5 

 37 



4-5 



9 



1-88 



0-II5 



16-3 

 0-55 



3 '4 

 o-ii 



5 

 35 



No. 4 



18 



171+ I 



14 



> 



> 



1-26 

 075 

 0-5 



1-5 

 i-o8 



0-59 

 0-64 



1-46 

 1-83 



1-84 

 oil 



16-7 

 0-52 



3'54 

 o-ii 



47 

 35 



