268 LEON J. COLE, 



p'., process representing an incipient secondary articular axis between meropodite 

 and carpopodite. 



pi., plane passing through the point of origin of the secondary growth from the 

 primary claw and through both the extra claws. 



pi' ., curved line representing the bending of the plane pi. as a result of torsion 

 and the mechanical conditions. 



pp., primary (normal) posterior articular process of meropodite. 



Pr., propodite. 



PrL, left primary or normal propodite. 



Pr' {R-\-L), extra double propodite. 



r., ridge at base of ischiopodite, possibly representing a secondary incipient 

 point for articulation with basal podomeres. 



s., scar on base of abnormal carpopodite. 



sp., large spine on meropodite. 



SpDL, spine at base of primary or normal dactyl. 



SpD' L, spine belonging to base of left extra dactyl. 



SpD'R, spine belonging to base of right extra dactyl. 



v., ventral. 



v.a., primary (normal) ventral articulation of ischiopodite to meropodite. 



v.p., primary (normal) ventral articular process of carpopodite. 



v.p'., extra (secondary) ventral articular process of carpopodite. 



v.-p., ventro-posterior, the side of the primary claw from which the extra claws 

 arise. 



X., smooth spot where the secondary dorsal articular process {d.p'.) of the car- 

 popodite has rubbed against the base of the propodite. 



I., position before torsion. 



IL, position as a result of torsion. 



