PLATE V. 
Km. :55. — Transverse section of the hind part of the crop. St., spines; rid., ridges 
L., longitudinal ; m«c. C, circular muscles. 
FlO. 38. — Section of the ventricular wall; d., duct of follicle ; cm., cuticula; Ep., epi- 
tlfblium ; conn., connective tissue ; note., muscles ; Tr., trache». 
Fig. '.V7. — Transverse section of a diverticulum. Tr., trachea; muc, circular muscular 
coat. 
FlG. 'M. — Section of a single fold of a diverticulum ; conn., connective tissue or tunica 
propria. 
Fig. '.VJ. — Inner surface of ventricle, with the epithelium removed. In. »»., circular; 
L., longitudinal muscles. 
Fig. 40. — Transverse sections of three Malpighian vessels lying against the muscular 
walls of the rectum, red. 
Fig. 41. — Caloptenus tpretus. Section of the epithelium of the rectum. 
Fig. 4:2. — Transverse section of rectal folds. F. F. x , furrows between the folds; L.L., 
longitudinal muscle; M. v., Malpighiau vessels. 
