528 



BULLETIN 58, UNITED STATES NATIONAL MUSEUM. 



407-409). Carapace short ovate, with a broad, raised median keel 

 and a well-marked depression on each side of the latter; anterior 

 border turned over backward, the outer (anterior) edge being smooth. 



Fig. 408.— Ann-DA schlegehi. \ x nat. s,ze. Underside. No. 29700, U.S.N.M. 



the imier edge near the median Ime somewhat tuberculate with a 

 couple of rounded tubercles on top of the rim at the middle; carapace 

 with numerous strongly tuberculated longitudinal lines, the outer 



Fig. 409.— Amyda schlegelii. i x xat. size. Side view. No. 29700, U.S.N.M. 



ones more or less continuous and parallel with the outer edge, the 

 inner ones very irregular and interrupted; posterior end densely 

 tuberculated, as is also the nuchal region; depth of shell about one- 



