PLATE XXXVII. 



Penasus serratus (p. 268). 



Fig. 1. Lateral view. 



„ la. Ophthalmopocl. 



lb. First antenna. 



„ 1", $ . Ventral aspect of male, with first and second pairs of pleopoda attached and 

 thrown back, with petasma attached to former. 



,, la. Part of second pair of pleopoda, detached. 



,, l'", ?. Ventral aspect of female. 



,, Iz. Telson. 



,, lor. Branch of branchial plume, and secondary branch ; detached. 



Penasus canaliculatus, var. japonicus (p. 245). 

 ,, 2br. Branch of branchial plume, and secondary branch ; detached. 



Hemipenasus sp>eciosus (p. 303). 

 „ 3br. Branch of branchial plume, and secondary branch ; detached. 



