•A Swelling at Base of Mandible 



10 Labium 



11 Ventral Appendages 



Figure 1.— Penaeid nauplii: a, Nauplius I; 6, Nauplius II; c, Nauplius III; d, Nauplius IV; e, and/, Nauplius V. 

 PENEIDAE OF THE NORTHWESTERN GULF OF MEXICO 



