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scopically roughened but not tuberculate; inner surface swollen and 

 bearing about five pearly tubercles scattered on swollen portion. 

 Fingers meeting in distal half, gaping proximally, with large, rectan- 

 gular, serrate tooth on basal third of movable finger. Chelipeds of 



Figure 14. — Pisa sanctaehelenae, male holotype: a, dorsal aspect of crab, right half denuded; 

 b, orbit in dorsal view; c, suborbital region; d, left chela; e, abdomen; //dactyl of right 

 posterior leg; g, mesiocaudal aspect of right gonopod; h, tip of same. 



females smaller; merus and carpus strongly spinose; chela smoother, 

 without basal tooth on movable finger. Walking legs decreasing in 

 length posteriorly; merus with rounded dorsal protuberance termi- 

 nally; carpus mth single tubercle near meral articulation, followed 

 by deep longitudinal furrow; propodus of first leg swollen distally in 



