PLATE XXXIX. 



Pkilonicus mulleri (p. 275). 

 Fig. 1. Female specimen. 

 „ 1". Ventral aspect of female ; p, p, first pair of pleopoda. 

 ,, 2. Male specimen. 



„ 2". First pair of pleopoda of male, with petasma folded and attached. 

 br. Primary branch of branchial plume. 

 hr". Secondary branch of branchial plume. 



