NO. 10 MORPHOLOGY OF GNATHOTRICHUS — SCHEDL 



65 



Fig. 34. — Gnathotrichiis matcriarius Fitch : Adult, alimentary canal and its 



appendages. 



A, fore intestine; B, mid-intestine; C, hind-intestine; Cr, crop; Mav, malpighian vessels; 

 Oes, oesophagus; Pve, proventriculus; Re, rectum; Ve, ventriculus; a, large intestine; 

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



Fig. 35. — Gnathotrichus materiarhis Fitch : Proventriculus. 



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

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

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



