KNKJHT and OMORI: LARVAL DEVELOPMENT OF SEHCKSTKS SIMILIS 



d c 



Figure 8. — Sergestes simiiis. First maxilliped: a-b, protozoea I, III; c, zoea I; d, postlarva I; setules omitted on b and c. 



pair small ventolateral spines proximal to 

 uropods; smooth ventral spines of telson rela- 

 tively larger than in stage I. 



Antennule (Fig. 2g) with proximal of 3 seg- 



ments without subdivisions and segment 2 with 5 

 setae, otherwise setation unchanged. 



Mandibles (Fig. 4f) usually with 3 and 6 spines 

 on right and left cutting edges, 1 of 10 larvae 



227 



