280 



STALK-EYED CRUSTACEA. 



PLATE XLVIII. 



X l§. 



Sternum of female. 



Antenna! scale. 



Swimmeret. 



Abdominal appendage of first pair, male. 



Female. X 1^. 



Sternum of female. 



Antennal scale. 



Swimmeret. 



Carapace viewed from above. 



PLATE XLIX. 



Enlarged. 



Sternum of female. 



Swimmeret. 



Antennal scale. 



Female. Natural size. 



Sternum of female. 



Swimmeret. 



Antennal scale. 



Carajjace of male. Natural size. 



Petasma of male. 



PLATE L. 



Fig. 1. Hemipenens triton Fax. 



1" 



2. Hemipenens spinidorsalis Bate. 



Male. Natural size. 



Swimmeret of a female. 



Sternum of a female. 



Antennal scale of a male. 



Petasma of a male. 



Inner branch of second abdominal appendage 

 of male. 



Inner branch of second abdominal appen- 

 dage of male. 



PLATE LI. 



Fig. 1. Sergestes edwardsii Kr. 



Sergestes inous Fax. 



Male. Much enlarged. 

 Swimmeret. 



Anterior part of carapace, and eye. 

 Antennal scale. 



Appendix of first antenna of male. 

 Petasma of a large male. 

 Female. Natural size. 

 Swimmeret. 



Anterior part of carapace, and eye. 

 Antennal scale. 



Gills. pV, posterior pleurobranchia of the 

 twelfth somite. 



