224 



DISCOVERY REPORTS 



n.fr.o. 



\ n.m.ne. 



nsh.2. 



namdb 



n.add.+ 

 n.5hj 



n.mx.I. msh.4. 



n.mx.2 



'nmxZs 



ill.pC 



Fig. 13. Reconstruction of nervous system. As the plane of the nerve ring is at about 120° to that of the 

 chain system (see Fig. 11), the reconstruction of the nerve ring was made from one series of sections and that 

 of the chain system from another. The sections on which these drawings are based are illustrated by photo- 

 graphs on Plate XL, figs. 1-8. ant. 2. 1, nerve loop ramifying over antennal gland; g.a.i, basal ganglion of 

 antennule; n.a.c. anterior cardiac nerve; n.add. nerve to adductor muscle; n.a.mdb. anterior mandibular 

 nerve; n.ant.i, antennulary nerve; n.ant.2, antennal nerve; n.fr.o. frontal organ nerve; n.l.n.e. nerve to lateral 

 component of nauplius eye; n.mdb.s. sensory mandibular nerve; n.m.n.e. nerve to median component of 

 nauplius eye; n.mx.i, maxillulary nerve; n.mx.2, maxillary nerve; n.mx.2. s. sensory maxillary nerve; 

 W.3.OTX.2, third maxillary nerve; n.p.c. posterior cardiac nerve; n.p.e. nerve to paired eyes; n.p.mdb. posterior 

 mandibular nerve; n.sh.i-q., shell nerves 1-4; n.t.l.i, first trunk limb nerve; n.t.1.2, second trunk limb nerve; 

 n.visc. visceral nerve. 



