REMARKABLE TORTOISE, TESTUDO LOVERIDGII. 



501 



a suture with seventh costal plate throughout its length from 

 fenestra to ninth marginal, excepting in the abnormal specimen, 

 in which it is partially separated from the seventh by an 

 elongated fenestra. 



Seventh costal plates (cjo. 7) sti'aight, with angular head and 

 pointed distal end which is projected some distance into middle 

 of ninth marginal. Anterior facet of head free, bordering fourth 

 vertebral fenestra, posterior forming suture with seventh neural 

 plate ; main anterior border forming suture with sixth costal 

 from end to end, posterior border forming a similar suture 

 with eighth. On the upper third of the suture between the 

 seventh and eighth costal plates there is a small oval fenestra, 



Text-fiaure 11. 



Diagram of marginals 5, 6, and 7. a. T.loveridgii. b. T.ibera. 



smaller on one side than on the other in the individual figured, 

 but of variable size in others. It is always very ragged in 

 outline. 



Eighth costal plates {cp. 8) pentagonal, broad, with the exception 

 of the very small fenestra described above, completely in contact 

 with the surrounding plates — i.e., seventh costal, seventh and 

 eighth neural, first pygal, ninth, tenth, and eleventh marginal 

 plates. A small triangular process is projected into the anterior 

 portion of tenth marginal. A small kidney-shaped fenestra with 

 jagged edges pierced above the ilio-sacral region, anterioily 

 reaches just beyond the groove made by the fourth costal and fifth 



35* 



