E (A) Palm of small (left) chela with conspicuous longitudinal ridge crested with single 

 row of elevated sharp principal spines slanted inward; anterior portion of ster- 

 nite between third legs somewhat rectangular (almost twice as wide as long), setae 

 few and short. (Usually occurs offshore.) P. pubescens 



Figure 54. — Pagurus pubescens: A, anterior part of body; B, chelae and carpi, dorsal views; 

 C, stemite between third legs, ventral view. 



E (A ) Palm of small (left) chela with broad longitudinal ridge crested with sharp or blunt 

 spines (tending to form double row) not slanted inward 



F (£) Chelipeds both sharply spined and hairy on upper surfaces; anterior portion of 

 sternite between third legs almost semicircular (nearly as long as broad), setae 

 many and long. (Usually occurs inshore.) P. arcuatus 



Figure 55. — Pagurus arcuatus: A, anterior part of body; B. chelae and carpi, dorsal views; 

 C, stemite between third legs, ventral view. 



20 



