NO. 10 MORPHOLOGY OF GNATHOTRICHUS — SCHEDL 



65 



Fig. 34. — Gnathotrichus materiarins Fitch: Adult, alimentary canal and its 



appendages. 



A, fore intestine: B. mid-intestine; C. hind-intestine; Cr, crop; Maz', malpighian vessels: 

 Oes, oesophagus; Pve, proventriculus; Re, rectum; I'e, ventriculus; a, large intestine; 

 b, posterior tube of the mid-intestine; c, small intestine. 



Fig. 35. — Gnathotrichus materlarius Fitch : Proventriculus. 



a, median line; b, sutural teeth; c, anterior closing teeth; d, dentation of masticatory 

 teeth, all together, masticatory brush; c, femora of the masticatory teeth, Abdachungszaehne 

 (Nuesslin); /, posterior closing teeth; A, masticatory plate; B, anterior plate. 



