. Smithsonian miscellaneous collections. 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 Fig. 35.—Gnathotrichus materiarhis Fitch: Proventriculus. a, median line; h, sutural teeth; c, anterior closing teeth: d, dentation of masticatoryteeth, all together, masticatory brush; e, femora of the masticatory teeth, Abdachungszae
. Smithsonian miscellaneous collections. 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 Fig. 35.—Gnathotrichus materiarhis Fitch: Proventriculus. a, median line; h, sutural teeth; c, anterior closing teeth: d, dentation of masticatoryteeth, all together, masticatory brush; e, femora of the masticatory teeth, Abdachungszaehne(Nuesslin); /, posterior closing teeth; A, masticatory plate; B, anterior plate. 66 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 82 magen (Lindeman) only. In the following discussion the interpreta-tions of Hopkins of the terms crop and j^roventriculus are used. The proventriculus consists of eight plates arranged to form atube, as illustrated in figure 35. On each plate two longitudinal divi-sions are clearly defined. Lindeman called the cephalad part the Plat-tenteil (A), the caudad part the Ladenteil (B) ; the correspondingterms of Hopkins are anterior plate and posterior or masticatoryplate. The latter terms are adopted in this paper. In Gnathotrichus,both of these plates are divided by a median suture (a) which is dis-tinctly visible on the masti
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