FIG 231. Diagram of the muscles and nerves of the ventral surface of the segments in the larva 

 of Sphinx liguxtri : A, A, recti muscles;- 1, 2, ventral recti muscles (1, recti majores; 2, recti 

 minores) : 3, ridge giving origin to recti muscles of one segment, and insertion to the same of the 

 adjoining segment ; 4, ridge for attachment of muscle: 5, retractor ventriculi, connecting the mid- 

 intestine with the outer integument of the body. _B. 6, first oblique, 7, second oblique, 9, 10, 

 third oblique, muscles ; 11, fourth oblique, 12. third rectus, 18, fifth oblique, 14, triangularis, 

 muscle; 15, transversus medius ; 16, transverse ridge : 17. transvorsi abdominnlrs : 18, abdomloalefl 

 anteriores ; 19, 20, nbdominales laterales, some ('20) longer than others ; 21, obliquus posterior; ~2->, 

 postero-laterales obliqui ; 23, transversus lateralis ; 24, second transversus laternlis ; '25. retractor 

 spiraculi, or constrictor of the spiracles, attached by a long tendon (2iVi ; 27. retractor \ul\uhi\ 



Nerves : ft. ganglion, c. transverse nerves, of which p is the first, q the second, r the third, 

 and * the fourth branch ; t, the main trunk, which crosses the great longitudinal trachea, rere'ves :i 

 filament from the transverse nerve (), and divides into two branches (/) ; some of those branches 

 form a small plexus () ; the nerve t divides in two divisions (p and ?). The second division ends 

 in and ar ; the branch q divides into y and z. For other explanations, see Newport, art. Inyeeta. 

 After Newport. 



212 



