THE LEPTOSTRACA 



'S3 



incisor process is small and simple in Nebalia and Paranebalia, 

 large and toothed in Nebaliella, and absent in Nebaliopsis. The 

 palp is large and has three segments. 



The maxillula (Fig. 88, C) has the usual two endites. The palp 

 is vestigial in Nebaliopsis ; in the other genera it is attached to 

 the distal margin but curves outwards and backwards so that the 



A. 



Fio. 88. 



Cephalic appendages of AVfcci/iVi. A, antennule ; B, mandible ; C, maxillula ; 

 D, maxilla. (After Clans.) 



very long, slender, and indistinctly segmented flagellum in which it 

 terminates is directed obliquely upwards along the side of the 

 thorax underneath the carapace (Fig. 87, p). 



The maxillae (Fig. 88, D) approximate in general form to the 

 thoracic limbs, except for the absence of an epipodite. There are 

 generally four endites, but the distal one is much reduced in 

 Nebalia and Paranebalia. The endopodite is divided into two 

 segments in Nebalia and, like the exopodite, is generally elongated. 



