LARVAE OF SERGESTES 



45 



Rostrum much longer than antennule, with long basal spine. Carapace wider than 

 long. Supraorbital spine longer than eye, nearly smooth. Hepatic spine large and stout, 

 with a few long spinules at base, but not swollen at base. Anterior lateral spine with a 

 number of long spinules. Posterior dorsal spine absent. 



Dorsal spines of abdomen extremely long, that of somite 5 longer than somite 6. 



Fig. 36. S. corniculum B. a, Acanthosoma 2, moulted from stage i ; b, end of scale and endopod 

 of antenna; c, telson; d, S. corniculum C, Acanthosoma 2. 



Lateral spines very long, the fifth reaching beyond somite 6. Spine i with several long 

 spinules at base ; spine 5 with two only. Telson much narrowed behind the lateral spine 

 and with slender fork. The arms of the fork bear two inner spines and one outer, the 

 anterior outer spine being inserted in front of the fork. In stage i both outer spines 

 are on the arm of the fork. 



Eye rather slender, one-sixth length of body and twice width of eyeball. There is a 



