ETJPAGTKTjS. 







Male. 







Right. 



Left. 



Somite XIY. 



Absent. 



Absent. 



XV. 



,, 



3 ) 



XVI. 



,, 



1st Pleopod 



XVII. 



,, 



2nd ,, 



XVIII. 





3rd „ 



505 



XIX. Uropod. Uropod. 



The First Antenna (fig. 1) is attached almost 

 immediately beneath the eye, but the joints turn inwards 

 and upwards, and thus appear to be attached on the 

 inner side of that organ. The ex- and end-opodite, the 

 former of which is much the larger, bear multiarticulate 

 flagella. That on the exopodite possesses a fringe of 

 long setae. The endopodite is quite small and 

 insignificant. In the proximal joint is lodged the 

 auditory sac, which opens to the exterior by a narrow 

 longitudinal slit on the upper side. 



The Second Antenna (fig. 2) is larger than the 

 first, and considerably more prominent by reason of the 

 very long flagellum. The protopodite is two-jointed and 

 the flagellum — which represents the endopodite — is 

 attached to it by two moveable segments. A narrow 

 pointed sickle-shaped exopodite, the squame, is present. 



The Mandible (fig. 3) is a strongly calcified elongate 

 structure. The portion immediately under the mouth is 

 tooth-like and strongly grooved within. Into this groove 

 the head of the palp fits. The palp is a little, jointed 

 structure, probably used for cleaning the biting edge of 

 the mandible and helping the food into the oesophagus. 

 The outside portion of the mandible is a long bar (the 

 apophysis), which serves as an attachment for the 

 powerful muscles moving the appendage. 



