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Show 720 DR. J. E. GRAY ON THE GENUS BARTLETTIA. [Nov. 1, by a central longitudinal groove into two ridges; the central notch not produced forward. (Gray, Cat. Sh. Rept. tab. 37. f. 1.) The young animal is black, the head ornamented with large white spots. P. E X P A N S A , Gray, Suppl. Cat. Sh. Rept. p. 83. B.M. 4. BARTLETTIA. Head short and broad; alveolar surface of the upper jaw flat in front, shelving and concave behind, with a very indistinct, short, subcentral ridge parallel to the outer margin; alveolar surface of the lower jaw with a slightly raised ridge on the outer edge, narrow, slightly concave in front, the inner edge obliquely raised into a sharp ridge, which is wide behind and narrow in front, with a rounded depression in the centre of the hinder edge (fig. 1). The central ridge in the horny beak of the upper jaw more distinct than in the skull. The skull (fig. 2, p. 721) is short and depressed, the eyes separated, forehead convex ; the head covered with hard shields, the crown-shield rounded in front, temporal shields large; chin with a single central beard ; the cheek-shield covering part of the temporal muscle not covered by the bone. The animal olive, and the head not spotted. Fig.l. Lower jaw of Bartlettia pitipii. BARTLETTIA PITIPII. 13.M. Shell olive-brown, ovate, hinder margin greatly expanded ; the head olive above, rather paler below ; the second and third vertebral |