n.ii.c. "/'•"v^g^"'-"-''- 



n.d.ant.2 

 v.ant.2 



nu.a.l 



tiu.t.1.2 



Fig. 9. Dorsal aspect of nervous system of Doloria levis to show nerve roots, the main nuclei and the giant 

 fibre system (green), c.b. central body; c.p. corpora pedunculata; lam. lamina of optic lobe; tn.nu.a.2, 

 motor nucleus of antenna; pied. medulla of optic lobe; n.i,mx.2, n.2,mx.2, n.2,»tx.2, first, second and 

 third maxillary nerves; n.a.v. anterior valve nerve; n.add.m. adductor muscle nerve; n.d.ant.2, dorsal 

 antennal nerve; n.fr.o. frontal organ nerve; n.l.e. optic nerve; n.mx.i. maxillulary nerve; n.n.e. nerves to 

 nauplius eye; n.p.v. posterior valve nerve; n.t.l. 2, 2nd trunk limb nerve; n.v.a?it. 2, ventral antennal nerve; 

 nu.a. I, nucleus of antennule; nu.a. 2, nucleus of antenna; nu.mdb. nucleus of mandible; nu.mx. i, nucleus 

 of maxillule; nu.mx. 2, nucleus of maxilla; nii.n.e. nucleus of nauplius eye; nu.symp. nucleus of sympathetic 

 system; nu.t.l. i, nucleus of first trunk limb; nu.t.1.2, nucleus of second trunk limb; op.tr. optic tract; 

 pr.br. protocerebral bridge; tr.c.b. tritocerebral central body. ( ■: 260 approx.) 



