TESTUDO BEADNELLI. 



285 



Testudo beadnelli, sp. nov. 



[Text-fig. 91.] 



Type Specimen. — A shell of which the carapace is somewhat incomplete, but the 

 plastron is in excellent preservation (text-fig. 91) ; Geological Museum, Cairo. 



The shell upon which this species is founded is the only one of this form that has 

 been found. It differs so considerably from all the shells of T. ammon that its 

 separation from that species seems fully justified. The chief of these differences 



/' H^p: 



Plastron of Testudo beadnelli. 

 ahd., abdominal shield ; an., anal shield ; Ent., entoplastral bone ; Ep.p., epiplastral bone ; fem., femoral 

 shield ; g., gular shield ; h., humeral shield ; Hy.p., hyoplastral bone ; Eyp.p., hypoplastral bone ; 



pect., pectoral shield ; Xi.p., xiphiplastral bone. 



About ^ nat. size. 



are : — (1 The areas covered by the vertebral shields are very slightly swollen and are 

 scarcely at all marked off" by any depression from the costals ; (2) the carapace, as a 

 whole, is less widened out and turned up in front, and it is considerably lower in 

 proportion to its width ; (3) the pygal region is less convex and does not extend so 

 much below the rest of the margin. Otherwise in the arrangement of the bones and 

 shields the two species are similar; the nuchal shield is well marked. 



