272 



Table 



Measurements of the typical form of Caridina 





No. I 



No. 2 



No. 3 



I<ength from tip of rostrum to tip of telson 









in millimetres 



29 



28-5 



27'5 



Toothing- formula of the rostrum 



233+1 

 20 



19+1 + 1 + ? 

 16 



193 f? 

 II 



Rostrum longer > , or shorter < than the 









scaphocerites 



> 



> 



> 



Rostrum longer > , or shorter < than the 









carapace 



> 



— 



> 



Proportion between the length of the tooth- 









ed and that of the unarmed part of the 









upper margin . . 



2 







lycngth of carpus . . . . , . >, 



I 



I 



1-02 



Breadth of carpus 





0-54 



0-52 



0-46 



Proportion between length and breadth of 



t/3 









carpus 





1-85 



1-92 



2*22 



I/cngth of chela 



'o 



1-4 



1-36 



1-3 



Breadth of chela 





065 



0-63 



0-6 



lycngth of fingers 



P4 



0-83 



079 



0-82 



Proportion between length of fingers and 



t5 









that of palm 



H 



1-45 



I '39 



17 



Proportion between length and breadth of 



'o 









chela . . . . . . . . ^ 





2-15 



215 



2-i6 



lycngth of carpus . , . . . . -^ 

 Breadth of carpus at distal extremity 





176 



1-8 



1-8 



(A 



0-41 



0-42 



0-36 



Proportion between length and breadth of 











carpus 



M-H 



4-3 



4'3 



5 



Ivcngth of chela 



o 



15 



1-5 



1-45 



Breadth of chela 



r 03 



0-57 



0-59 



0-55 



lycngth of fingers 



& 



0'92 



0-88 



0-91 



Proportion between the length of lingers 











and that of palm 



<N 



1-6 



1-4 



17 



Proportion between length and breadth of 



o 









chela 





2-6 



2-54 



2-6 



Ivcngth of propodite . . , . . , -^ 

 Breadth of propodite in the middle 





2-35 



2-48 



2-48 





0-194 



0-19 



o-i8 



Proportion between length and breadth of 











propodite . . 



1) 



I2-I 



13 



13-8 



lycngth of dactylus 



o 



0-63 



0-6 



0-62 



Proportion between length of propodite 











and that of dactylus. . 



39 



4-1 



4 



Breadth of dactylus 



0-176 



o-i6 



o-i6 



Proportion between length and breadth of 











dactylus 



M-l 



3-6 



375 



3-87 



Number of spines of dactylus, terminal claw 



c 









included 

 I^ength of propodite . . . . . .^ 



Breadth of propodite in the middle 





10 



9 



9 







2-9 









0-19 





Proportion between length and breadth 











of propodite 







15 





Length of dactylus 



Q 





0-92 





Proportion between length of propodite 



VH 









and that of dactylus 







3-26 





Breadth of dactylus 



r1 





0-2 





Proportion between length and breadth of 











dactylus 



<*-i 





4-6 





Number of spines of dactylus, terminal 



o 









claw included 







43 





