EMOIR 49 Piate LVI 
Saat z 
EPHYDRA SUBOPACA 
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23, Cross section, showing insertion of caeca (a, caecal tube) ; 24, cross section of proventriculus (a, striatea 
border; b, epithelium; c, blood space; d, circular muscle of sphincter) ; 25, cross section through convoluted 
alimentary canal (a, b, ¢, d, mid-intestine; e, hind intestine); 26, cross section, showing insertion of mal- 
pighian tube (a, circular muscle; b, longitudinal muscle; c, epithelium; d, basement membrane; f, mal- 
pighian tube) ; 27, cross section of malpighian tubes (a, b, ec, tubes; d, common root of two tubes); 28, longi- 
dinal section of rectum (a, epithelium; b, muscular wall; c, muscle); 29, cross section of rectum (a, circular 
muscle; b, epithelium; c, intima); 30, muscles of cephalopharyngeal sclerites (a, mandibular extensor; b, 
pharyngeal depressor; c, dorsal cephalic protractor; d, e, f, stomal dilators; g, ventral cephalic protractor; 
ih, mandibular depressor; i, ventral cephalic retractor); 31, muscles of dorsal body wall (a, dorsal cephalic 
retractor; b, demi-annular; c, lateral intersezgmental; d, external dorsolateral oblique; e, internal dorso- 
lateral oblique; f, lateral longitudinal; g, dorsal longitudinal; h, anal; i, lateral); 32, ventral body wall, with 
muscles (a, dorsal cephalic retractor; b, ventral cephalic retractor; c, internal ventral oblique; d, external 
ventral oblique; e, lateral longitudinal; f, intersegmental; g, internal ventro-lateral oblique; h, external 
ventro-lateral oblique; i, ventral longitudinal; j, anal); 33, dorsal view of vascular system (a, dorsal 
aorta; b, pericardial body; c, valve; d, alar muscle; e, f, ostia); 34, longitudinal section of gonad 
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