60 EMYSPSEUDO-GEOGRAPHICA. 



marginals; the second and third are pentagonal, the fourth is quadrilateral, larger 

 below and joined to three marginals. Of the marginal plates the nuchal or 

 intermediate is trigonal, with the apex truncated and directed forwards, and the 

 basis backwards, with a small triangular notch to be received on the point of 

 the anterior vertebral; the anterior marginal is pentagonal, with its anterior 

 and external border projecting beyond the second; the remaining plates are 

 quadrilateral; those on the flanks are revolute, and make a groove or gutter; and 

 the five posterior are slightly notched, with their posterior and external angle 

 projecting so much as to give a serrated appearance to the posterior margin of 

 the shell. 



The sternum is full and entire in front, and deeply emarginate behind; the gular 

 plates are short and triangular, their bases before, their apices behind, with a pro- 

 jecting spine or knob at their outer and anterior angle; the brachials are also 

 triangular, with bases rounded and turned outwards, and apices turned inwards 

 and truncated; the thoracics are oblong, quadrilateral, narrow in the antero-pos- 

 terior direction; the abdominals are nearly square, their outer margin ofliering 

 three facets for joining the marginal and supplementary plates; the femoral are 

 irregularly quadrilateral, broader without, and rounded, with their posterior and 

 external angle lengthened out beyond the subcaudal in a point; the subcaudals 

 are trapezoid in form. Of the supplementary plates the axillary are large, oblong 

 and pentagonal; the inguinals are also large and rhomboidal. 



The head is small; the snout is pointed and very slightly turned up; the nostrils 

 are anterior, small and closely approximated; the jaws are entire or without 

 serras; the upper is slightly emarginate in front, and the lower is provided with 

 a small tooth; the eyes are moderately large, the pupil black, the iris of a rich 

 golden colour, with a small black horizontal band not extending completely 

 through it. 



The anterior extremities are rounded at the shoulder, flattened at the carpus, 

 and covered with large scales in front and smaller behind, with a series of scales 



