PLATE XLIX. 



Hemipen&us semidentatus (p. 305). 

 Fig. 1. Lateral view of female. 

 ,, \br. Branch of branchial plume. 



Heniipenseus tomentosus (p. 307). 



„ 2, ?. Ventral aspect of female, showing hollow between pereiopoda. 



„ 3, $. The same hollow part, containing a gelatinous mass ; from another specimen. 



,, 3". Section of the inferior portion of the wall of the carapace overlying the branchial 

 chamber. 



