STRUCTURE, GROWTH AND ECONOMICS OF INSECTS 21 



el. 



tridt.. 



v.rma/. 



vrmin. 



Fig. 26. — Ventral surface of larva of Sphida obliqua, showing arrangement of 

 parts. AN., Antennal nerve; CL., clypeo-labral nerve; Al.c, alimentary canal- 

 LG., lateral ganglion; /;-., tracheal trunk; tr.lat., tergo-sternal muscles; v.r.maj', 

 v.r.min., ventral longitudinal muscles; S.lig., suspensorium of testes; Test., testis- 

 V.d., vas deferens; Sp., spiracle; T., thoracic ganglia; /, II, III. etc. abdominal 

 ganglia; o.l., oj.cr.ing 'nto leg; tr.r., transverse nerve; BB., brain. 



