Appendix 1. Measurements of Physocypria biwaensis Light form. L=length, H=height, H/L=height/length ratio; AC/UR=ratio between the length of the anterior claw on the caudal ramus and length of the caudal ramus; PC/UR = ratio between the length of the posterior claw on the caudal ramus and length of the caudal ramus; PC/AC= ratio between length of posterior and anterior claws on the caudal ramus; CL6/S=ratio between length of the claw on the sixth limb and length of the second and third segments on the same limb. All measurements in mm.