C (B) Both chelipeds slender, sub- 

 cylindrical, relatively smooth 

 or lightly granulate (small 

 species) P. longicarpus 



Figure 51. — Pagurus longicarpus; A, anterior part of 

 body; B, chelae and carpi, dorsal views. 



C (B) Both chelipeds stout; conspicuously broad and smooth, or sharply spined D 



D (C) Dactyl of major chela 

 with sharply produced 

 angle on mesial margin; 

 upper surface of both 

 chelae sharply but even- 

 ly granulated P. pollicaris 



Figure 52. — Pagurus pollicaris; A. anterior part of 

 body; B, chelae and carpi, dorsal views. 



D (C) Dactyl of major chela with no sharply produced angle on mesial margin, border 

 usually spiny; upper surface of both chelae covered with short, sharp spines, and 

 often with broad longitudinal red-orange stripe persistent in alcohol P. acadianus 



Figure 53. — Pagurus acadianus; A, anterior part of 

 body; B, chelae and carpi, dorsal views. 



19 



