E. ir. J. SOHUSTKH 



203 



Diat'rani 11. show.s Ihe regrcssiou liiics ol' thi' chela Icugth uii tlie carapace 

 for (leep and shallow water forms, the dotted liiiu representing that of thc 

 deep water forms as in Diagrani 1. Tlie diagram shovvs that the same carapaee 

 Iciigth i.s associated with a smalkr cliela length in the deep water forms than 

 in the shallow, but the difference betweeu deep and shallow is not so marked 

 as in Diagrani I. 



DiAiiiiAM II. Leiiijtli »f Ititiht Cliela. 



tl.15 10.^6 U.iS la.flS 13.45 14. 4r 15 46 Ifl.tS 17.4!. IR,46 ItJ 45 30.45 al,45 22.4'- 23.45 24.46 25.46 



27.45 ?S45 20.45 30.45 



<3 

 Ü 8.5S 



Coraparison betweeu Regression Liues of Right Chela Length on Carapaee Length between Shallow 

 Water ii (BB) and Deep Water <J<J(DD). 



Shallow Water ig. 

 Mean Length of Right Chela 18-G773 mm. 

 Mean Length of Carapaee 8-4003 mra. 

 Regression of Chela ou Carapaee 1-40Ö. 



Deep Water iS. 

 Mean Length of Right Chela 17-9G7(i. 

 Mean Length of Carapaee 8 -,58.54. 

 Regression of Chela on Carapaee 1-329. 



Tables XIII. and XIV. show the correlation between carapaee length and chela 

 index for deep and shallow water groups respectively. 



Deep water r = - •522-i + -0223, 

 Shallow water r = - "4448 ± -0231, 

 Difference 0776 ± 0321. 



26—2 



