154 



LEWIS HENRY OOUGH. 

 Text-fig. 4. 



1....1. ...I.---I--I---I..../ 



I. 2 3 4-. 5. 6 7 8 9 10 ri. r2.l3 14- 15 16 I7I8.I920.2I22 23.2''r 



The top row represents ii transverse section, the lower part of the 

 figure a horizontal section. The figure shows the sections of 

 the dorso-ventral muscles separating the bundles. The 

 bundles are real. 



Text-fig. ."i. 





b. 

 c. 



d. 



f. 



1.2. 3. 4.56 7 8. 9. 10 II 12 13.14 15. 1 6 17. 18 19.20. 



The top vow represents a transverse section, the lower part of the 

 figure a horizontal section. The figure shows the doi-so-ventral 

 muscles passing througli between the lono-itudinal fil)res. At 

 the levels «, b, c. d, etc.. one would find the muscles arranged 

 in bundles of four, as in Te.vt-fig. 4-. The arrangement in 

 bundles is only apparent. 



