Am. Jour. Sci., Vol. XVII, 1904. 



Plate III. 



Plastral view of Adocus punctatus Marsh, x^. — Drawn from type. 



Plastron. — (a) Bone Plates: — ep, Epiplastron ; en, Entoplastron ; hy, 

 Hyoplastron ; hp, Hypoplastron ; xp, Xiphiplastron. (b) Horn Shields : — 

 ig, Intergular ; g, Gular ; h, Humeral ; p, Pectoral ; v, Ventral ; /, Femoral ; 

 a, Anal ; ai, mi, ii, axillary, mesial and inguinal infra-marginals. 



Carapace. — M3, 8d Marginal supporting axillary buttress of Plastron ; M8, 

 8th Marginal supporting inguinal buttress of Plastron ; N, Nuchal ; P, Pygal ; 

 Pm, Pygal Marginal ; I, n, v-vm, 1st, 2d, 5th-8th Pleuralia ; sc, supra- 

 caudal horn shield. 



