EXPLANATION OF THE PLATES. 



281 



PLATE LII. 



(1 J^» 



Enlarged. 



Anterior part of carapace. More liiglily 



magnified. 

 Swimmeret. 

 First antenna of male. 

 Part of first antenna of male, more enlarged 



to show the appendicular organ. 

 Anteunal scale, male. 

 Antenna of first pair, female. 

 Part of antenna of first pair, female. More 



enlarged. 

 Petasma of male. 



PLATE LIII. 



Fig. 1. Euco^na sculjiticauda Fax. 



" 1". 



II j(>_ <( « II 



" r. " « 



« Jd « « a 



" 2. Petalophthahnus armiger W.-S. 



" 2". " " " 



« 2*. " " " 



" 2^ " " " 



Female. Enlarged. 



Swimmeret. 



End of telson, more highly magnified. 



Front, eyes and antennae, from above. 



Second antenna. 



Female. Ceplialo-thorax, much enlarged. 



" Blake " Station 29, Gulf of Mexico. 



Swimmeret of same specimen. 



Second antenna of same specimen. 



First abdominal appendage of same specimen. 



PLATE LIV. 



Male. Much enlarged. 

 Anterior part, from above. 

 Carapace from above. 

 Swimmeret. 

 Modified eye-stalk. 

 Second antenna. 

 First abdominal appendage. 

 Second abdominal appendage. 

 Fifth abdominal appendage. 



PLATE LV. 



ifugus Fax. 



Fig. 1. Scolophihalmiis luc 



a !<.. 



" 1'. 



« Ji 



" 2. Ceratomysis spinosa Fax. 



Female. Much enlarged. 



Anterior part, from above. 



Carapace from above. 



Swimmeret. 



Second antenna. 



Fifth abdominal appendage. 



Female. Lateral view. Much enlarged. 



