DISCOVERY REPORTS 



Fig. ii. Reconstruction of anterior part of body from a parasagittal plane so chosen as to expose the aorta 

 and the complete nerve ring surrounding the oesophagus. Only certain nerves have been labelled ; the 

 remainder can be identified by comparison with Fig. 13. a.ant.i, antennulary artery; a.ant.2, antennal 

 artery; a.h.a. anterior hypostomal apodeme; end. endosternite ; g.a.i, basal ganglion of antennule; g.tnx.z, 

 basal ganglion of maxilla; m.ao.oe. aortic-oesophageal muscle; n.n.e. nerve to lateral component of nauplius 

 eye; mx.i, maxillule; mx.2, maxilla; n.a.c. anterior cardiac nerve; n.mx.i, maxillulary nerve; n.p.c. posterior 

 cardiac nerve; n.t.l.i, first trunk limb; p.e.st. stalk of paired eye; v. termination of valve controlling supra- 

 neural vessel. 



