Figs. 122, 123. Proechimys iheringi panema, female, MN no. 8288, Campinho. Type. × 1.
Figs. 124, 125. Proechimys iheringi denigratus, male, MN no. 8500, Mata do Ribeirão da Fortuna. Type. × 1.
Figs. 126, 127. Proechimys iheringi paratus, female, MN no. 4012, Floresta da Capela de São Braz. Type. × 1.
Proechimys iheringi iheringi [Thomas]
Proechimys iheringi [Thomas], August, 1911, Ann. Mag. Nat. Hist., 8 (ser. 8):252 (orig. descr.); [Thomas], 1921, Ann. Mag. Nat. Hist., 8 (ser. 9):141; [Tate], 1935, Bull. Amer. Mus. Nat. Hist., 68(5):400; [Ellerman], 1940, The families and genera of living rodents, Brit. Mus. (Nat. Hist.), 1:122.
Type locality.—Island of São Sebastião (off São Paulo), Formosa, São Paulo, Brazil. Type: British Museum (Nat. Hist.), no. 2.8.25.5, adult male, presented by the São Paulo Museum.
Range.—Littoral and islands of São Paulo and Rio de Janeiro.
Diagnosis.—Aristiforms narrow; tail shorter than head and body; setiforms Cinnamon-Buff; incisive foramen short; vomerine sheath complete; upper molariform teeth with two or three counterfolds; lower molariform teeth with two counterfolds, rarely one in m3.
Pelage.—Aristiforms on middorsal region: Gray basally, gradually blackening toward tip; total length 18 to 23 mm; maximum width, 0.6 mm. Aristiforms on outer thighs: Gray basally, blackening distally toward tip; some differentiated with Cinnamon-Buff tip. Setiforms on middorsal region: Gray basally, gradually blackening toward tip but interrupted by a Cinnamon-Buff, subapical zone 3 mm long; total length, 16 to 20 mm; maximum width, 0.06 mm. Setiforms on outer thighs: Gray basally, gradually blackening toward tip but interrupted by Cinnamon-Buff, subapical zone or with Cinnamon-Buff continuous to tip.